New wheels and rubber!! Boss 338 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

0_71chevy · 03-01-2011, 09:24 PM

One step closer to the body shop have to re-adjust the valves and tinker with the timing a little and she's headed to the body shop,

Wheels- Boss 338
Front 20x8.5- 255-45-20 Toyo STII
Rear 20x10- 295-45-20 Toyo STII

mmmBoost · 03-01-2011, 09:35 PM

Beautiful looking truck

Keep up the good work

**lolife99** · 03-01-2011, 09:36 PM

Great looking truck!

bosco200 · 03-01-2011, 09:39 PM

MMMmmmmmmmmm

chevychase · 03-01-2011, 10:11 PM

Looking good! Any issues with the Boss rims fitting? I remember seeing some issues a while back on the fronts and the bore if I remember correctly.

0_71chevy · 03-01-2011, 10:25 PM

thanks guys, slight modification required not a big deal if you have access to a brake lathe fortunately we have one at the shop.

chevychase · 03-01-2011, 10:27 PM

Quote:

Originally Posted by 0_71chevy

thanks guys, slight modification required not a big deal if you have access to a brake lathe fortunately we have one at the shop.

Ahhhhh.... cool deal!

dougo · 03-01-2011, 11:06 PM

man... that looks good. I love those wheels... one of my favorites. Nice work!

Rooster's 67 · 03-02-2011, 01:00 AM

whats the back spacing on the wheels?

gearys 5600 · 03-02-2011, 01:05 AM

Lookin good.

68GenIII · 03-02-2011, 10:07 AM

Looks great!!!

Fastfun · 03-02-2011, 10:10 AM

THat looks GOOOOOOOOOD!!

0_71chevy · 03-02-2011, 08:47 PM

edited

0_71chevy · 03-02-2011, 08:48 PM

thanks again, heres the specs on the wheels

BOZO · 03-02-2011, 09:10 PM

Nice stance. How much drop?PLEASE post pictures when its painted.

cstm68 · 03-02-2011, 09:21 PM

wow looks awsome, ive got the same wheels (size and all) sitting on the shelf at work, just waiting for my 5 lug swap rotors. what rotors are you using? did you need to do anything to the rear to fit? how much did you take off the rotors? i also have a brake lathe at work so now that you posted thoes pics i can sleep at night...thanks.

magwakeenercew2jh · 03-02-2011, 09:51 PM

I'm running an almost Identical set up. I don't know what kind of bed is going on this fine truck, but mine is a 1/2 ton Fleet with an ECE 4/6 drop, shock re-location kit and adjustable panhard bar.

My wheels are 8.5/20 running Nexen 245/40's up front and 275/45 out back.
I don't know the backspacing on the rear, but 82.8 mm (about 3.25") seems a little less than mine.
Maybe not. I don't even know if the 20 x 10's come with varying backspaces.

A couple of items:

The removal of material from the front hubs can be done in 5 minutes with a hand-held grinder. If I can do it, it can be done by a moron.

With my set up, I really needed to space the rear wheels out an inch. I accomplished that with some nice 1" (5 x 5) billit spacers.
The picture below is BEFORE I put the spacer on. A two-minute install that makes the front and rear wheels appear to be on the same axis.
Remember, the front stock "tracking" is about 2" wider, in all.

But what the $60 fix (price of the spacers) *really* did was give me more than the "spacerless" 3/8" clearance had afforded between the inner of the rear tire and the inside
of the inboard side of the wheel tub. An adjustable panhard bar make it "easy" to line up. Now, with the 275's in the rear, I have 1 3/8" inch clearance on each side.

I didn't want to hijack. Just wanted to make sure that someone with my set up is prepped for the possibility of the clearance issue.
I probably could have run them without the spacers. But 295's would have been out of the question with the 20's and MY back spacing and drop.

If you don't want to run sacers, I'd find out what options you have for backspacing on the 20's.

magwakeenercew2jh · 03-02-2011, 10:00 PM

Follow up.

Here is the set-up WITH the spacer.

You can't really tell from this angle, but there's plenty of clearance with the fender well, even at full compression.
With 275/45's, anyway.

*mrhino* · 03-03-2011, 08:53 AM

Great looking wheels, the minor modifications needed are worth it. Im running 18's and had no problem with the rear spacing. Is running a spacer only necessary with the 20's?

magwakeenercew2jh · 03-03-2011, 02:19 PM

Quote:

Originally Posted by mrhino

Great looking wheels, the minor modifications needed are worth it. Im running 18's and had no problem with the rear spacing. Is running a spacer only necessary with the 20's?

I don't know. But it looks like the polished lip on your 18 is wider than my 20's.
But, if I remember reading correctly, your rears are wider than 10", right?

It's all about the backspace (and, of course, wheel width and tire size).

And, as I said, I don't know what backspace options Boss 338's have on any of their wheels.
The best info on the 20's, until I go to the shop to measure, come from 0_71chevy's box showing 82.8mm.

Your wheels (and your whole truck) are a beauty to behold. Those 18's are great looking.

Here's another shot of mine without the 1" spacer in the rear.

0_71chevy · 03-02-2011, 09:33 PM

Don't worry when it gets out of the body shop pics will be posted ASAP!! Sure it will be a little while before everything is done as for the drop im not a 100% but i think its a 4/6 has Bell Spindles on the front and drop spring in the back but they were installed before i purchased the truck, the wheels picked it up about 1-2 inches though.

Did not have to do anything to the rear drums to fit slid right on, had to trim off prob 3/4s of an inch in into the rotor and about an 1/8 of an inch or so shaved off i just took the rotors to work along with the wheel and would cut some then try to fit it on the wheel took maybe 20 minutes, not sure what type of lathe you have but i had to flip the arm over that are used for turning drums and flipped the bits worked perfect, if anyone in the area needs this done i'd be happy to help out. the rotors were also on the truck when i bought so i don't know much about them...

0_71chevy · 03-03-2011, 08:43 AM

mine will also be a fleet bed, i guess i will cross that road when it comes the reason i went with a 295 instead of a 275 was the price, i could get the 295 for like a dollar more and i had heard a 275 gave it a balloon look on a 10 inch wheel, while the 295s were rated for a 9.5-11 inch wheel. difference in width was 3/4s of an inch over the 275s.

**lolife99** · 03-03-2011, 03:12 PM

Looks like 6.225" BS on the 20x10's.

PART # SIZE FINISH PATTERN OFFSET BSM CAP # LOAD SHIP WT.

3382-2012 20x10 Super Finish Black 5 on 4.5 35 mm 6.816 3248-06 1580 lbs. lbs.
3382-2015 20x10 Super Finish Black 5 on 115mm 20 mm 6.225 3248-06 1580 lbs. lbs.
3382-2021 20x10 Super Finish Black 5 on 120mm +32 mm 6.698 3248-06 1580 lbs. 35.1 lbs.
3382-2034 20x10 Super Finish Black 5 on 4.75 20 mm 6.225 3271-06 1580 lbs. lbs.
3382-2050 20x10 Super Finish Black 5 on 5 20 mm 6.225 3271-06 1580 lbs. lbs.
3382-2812 20x8.5 Super Finish Black 5 on 4.5 14 mm 5.239 3248-06 1580 lbs. lbs.
3382-2815 20x8.5 Super Finish Black 5 on 115mm 14 mm 5.239 3248-06 1580 lbs. lbs.
3382-2821 20x8.5 Super Finish Black 5 on 120mm +28 mm 5.790 3248-06 1580 lbs. lbs.
3382-2828 20x8.5 Super Finish Black 5 on 4.5 28 mm 5.790 3248-06 1580 lbs. lbs.
3382-2834 20x8.5 Super Finish Black 5 on 4.75 14 mm 5.239 3271-06 1580 lbs. lbs.
3382-2850 20x8.5 Super Finish Black 5 on 5 +14 mm 5.239 3271-06 1580 lbs. lbs.
3382-2881 20x8.5 Super Finish Black 5 on 4.75 28 mm 5.790 3248-06 1580 lbs. lbs.
3382-9812 18x8 Super Finish Black 5 on 4.5 +2 mm 4.517 3248-06 1580 lbs. lbs.
3382-9815 18x8 Super Finish Black 5 on 115mm +2 mm 4.517 3248-06 1580 lbs. lbs.
3382-9828 18x8 Super Finish Black 5 on 4.5 +14 mm 4.989 3248-06 1580 lbs. lbs.
3382-9834 18x8 Super Finish Black 5 on 4.75 +2 mm 4.517 3248-06 1580 lbs. lbs.
3382-9850 18x8 Super Finish Black 5 on 5 +2 mm 4.517 3248-06 1580 lbs. lbs.
3382-9912 18x9.5 Super Finish Black 5 on 4.5 -4 mm 5.031 3248-06 1580 lbs. lbs.
3382-9915 18x9.5 Super Finish Black 5 on 115mm -4 mm 5.031 3248-06 1580 lbs. lbs.
3382-9934 18x9.5 Super Finish Black 5 on 4.75 -4 mm 5.031 3248-06 1580 lbs. lbs.
3382-9950 18x9.5 Super Finish Black 5 on 5 -4 mm 5.031 3248-06 1580 lbs. lbs.
3386-2012 20x10 Chrome 5 on 4.5 35 mm 6.816 3248-06 1580 lbs. lbs.
3386-2015 20x10 Chrome 5 on 115mm 20 mm 6.225 3248-06 1580 lbs. lbs.
3386-2021 20x10 Chrome 5 on 120mm +32 mm 6.698 3248-06 1580 lbs. 35.1 lbs.
3386-2034 20x10 Chrome 5 on 4.75 20 mm 6.225 3271-06 1580 lbs. lbs.
3386-2050 20x10 Chrome 5 on 5 20 mm 6.225 3271-06 1580 lbs. lbs.
3386-2812 20x8.5 Chrome 5 on 4.5 14 mm 5.239 3248-06 1580 lbs. lbs.
3386-2815 20x8.5 Chrome 5 on 115mm 14 mm 5.239 3248-06 1580 lbs. lbs.
3386-2821 20x8.5 Chrome 5 on 120mm +28 mm 5.790 3248-06 1580 lbs. lbs.
3386-2828 20x8.5 Chrome 5 on 4.5 28 mm 5.790 3248-06 1580 lbs. lbs.
3386-2834 20x8.5 Chrome 5 on 4.75 14 mm 5.239 3271-06 1580 lbs. lbs.
3386-2850 20x8.5 Chrome 5 on 5 +14 mm 5.239 3271-06 1580 lbs. lbs.
3386-2881 20x8.5 Chrome 5 on 4.75 28 mm 5.790 3248-06 1580 lbs. lbs.
3386-9812 18x8 Chrome 5 on 4.5 +2 mm 4.517 3248-06 1580 lbs. lbs.
3386-9815 18x8 Chrome 5 on 115mm +2 mm 4.517 3248-06 1580 lbs. lbs.
3386-9828 18x8 Chrome 5 on 4.5 +14 mm 4.989 3248-06 1580 lbs. lbs.
3386-9834 18x8 Chrome 5 on 4.75 +2 mm 4.517 3248-06 1580 lbs. lbs.
3386-9850 18x8 Chrome 5 on 5 +2 mm 4.517 3248-06 1580 lbs. lbs.
3386-9912 18x9.5 Chrome 5 on 4.5 -4 mm 5.031 3248-06 1580 lbs. lbs.
3386-9915 18x9.5 Chrome 5 on 115mm -4 mm 5.031 3248-06 1580 lbs. lbs.
3386-9934 18x9.5 Chrome 5 on 4.75 -4 mm 5.031 3248-06 1580 lbs. lbs.
3386-9950 18x9.5 Chrome 5 on 5 -4 mm 5.031 3248-06 1580 lbs. lbs.
3387-2012 20x10 Super Finish Grey 5 on 4.5 35 mm 6.816 3248-06 1580 lbs. lbs.
3387-2015 20x10 Super Finish Grey 5 on 115mm 20 mm 6.225 3248-06 1580 lbs. lbs.
3387-2021 20x10 Super Finish Grey 5 on 120mm +32 mm 6.698 3248-06 1580 lbs. 35.1 lbs.
3387-2034 20x10 Super Finish Grey 5 on 4.75 20 mm 6.225 3271-06 1580 lbs. lbs.
3387-2050 20x10 Super Finish Grey 5 on 5 20 mm 6.225 3271-06 1580 lbs. lbs.
3387-2812 20x8.5 Super Finish Grey 5 on 4.5 14 mm 5.239 3248-06 1580 lbs. lbs.
3387-2815 20x8.5 Super Finish Grey 5 on 115mm 14 mm 5.239 3248-06 1580 lbs. lbs.
3387-2821 20x8.5 Super Finish Grey 5 on 120mm +28 mm 5.790 3248-06 1580 lbs. lbs.
3387-2828 20x8.5 Super Finish Grey 5 on 4.5 28 mm 5.790 3248-06 1580 lbs. lbs.
3387-2834 20x8.5 Super Finish Grey 5 on 4.75 14 mm 5.239 3271-06 1580 lbs. lbs.
3387-2850 20x8.5 Super Finish Grey 5 on 5 +14 mm 5.239 3271-06 1580 lbs. lbs.
3387-2881 20x8.5 Super Finish Grey 5 on 4.75 28 mm 5.790 3248-06 1580 lbs. lbs.
3387-9812 18x8 Super Finish Grey 5 on 4.5 +2 mm 4.517 3248-06 1580 lbs. lbs.
3387-9815 18x8 Super Finish Grey 5 on 115mm +2 mm 4.517 3248-06 1580 lbs. lbs.
3387-9828 18x8 Super Finish Grey 5 on 4.5 +14 mm 4.989 3248-06 1580 lbs. lbs.
3387-9834 18x8 Super Finish Grey 5 on 4.75 +2 mm 4.517 3248-06 1580 lbs. lbs.
3387-9850 18x8 Super Finish Grey 5 on 5 +2 mm 4.517 3248-06 1580 lbs. lbs.
3387-9912 18x9.5 Super Finish Grey 5 on 4.5 -4 mm 5.031 3248-06 1580 lbs. lbs.
3387-9915 18x9.5 Super Finish Grey 5 on 115mm -4 mm 5.031 3248-06 1580 lbs. lbs.
3387-9934 18x9.5 Super Finish Grey 5 on 4.75 -4 mm 5.031 3248-06 1580 lbs. lbs.
3387-9950 18x9.5 Super Finish Grey 5 on 5 -4 mm 5.031 3248-06 1580 lbs. lbs.
3389-9834 18x8 Polished 5 on 4.75 +2 mm 4.517 3248-06 1580 lbs. 26 lbs.

Foosified · 03-03-2011, 03:20 PM

boss 20x10's are 6.225" BS. With a 295 wide tire a spacer will most likely be required to avoid rubbing on inner portion of wheel tub and and to make it look good a spacer should be used. 1 - 1.25" spacer should do the trick, as I believe was stated earlier. The 18's come either 9.5" or 8" wide, but the BS on the 9.5's is better than the 20x10's at 5.031. No spacers needed. Lip on the 18's is almost 3/4" deeper than the 20x10's.

lolife beat me to it!

cstm68 · 03-03-2011, 04:55 PM

iv got 20x10's for the rear of mine but dont have them on yet cuz im waiting on 5 lug axles from cpp, will i need a spacer for the rear to clear the center of the axle or is the bore on the wheel big enough?

03-01-2011, 09:24 PM	#1
0_71chevy Registered User Join Date: Jun 2010 Location: Dahlonega, Georgia Posts: 66	New wheels and rubber!! Boss 338 One step closer to the body shop have to re-adjust the valves and tinker with the timing a little and she's headed to the body shop, Wheels- Boss 338 Front 20x8.5- 255-45-20 Toyo STII Rear 20x10- 295-45-20 Toyo STII

03-01-2011, 09:35 PM	#2
mmmBoost Registered User Join Date: Jan 2011 Location: Wisconsin Posts: 224	Re: New wheels and rubber!! Boss 338 Beautiful looking truck Keep up the good work __________________ Always remember those that had your back Never forget those that turned it Demon 68- C20 (conv. 5 lug) 406sb, TH400, 12 Bolt, Red Slut 09- 1500 Crew Cab Z71, 2.5" Lift, Comp Cam, Deleted AFM/DoD, Diablo tuner

03-01-2011, 09:36 PM	#3
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: New wheels and rubber!! Boss 338 Great looking truck! __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

03-01-2011, 09:39 PM	#4
bosco200 Registered User Join Date: Dec 2009 Location: Ste. Genevieve, MO Posts: 526	Re: New wheels and rubber!! Boss 338 MMMmmmmmmmmm

03-01-2011, 10:11 PM	#5
chevychase Registered User Join Date: Jun 2007 Location: Boca Raton, FL Posts: 476	Re: New wheels and rubber!! Boss 338 Looking good! Any issues with the Boss rims fitting? I remember seeing some issues a while back on the fronts and the bore if I remember correctly. __________________ Joe

03-01-2011, 10:25 PM	#6
0_71chevy Registered User Join Date: Jun 2010 Location: Dahlonega, Georgia Posts: 66	Re: New wheels and rubber!! Boss 338 thanks guys, slight modification required not a big deal if you have access to a brake lathe fortunately we have one at the shop.

03-01-2011, 11:06 PM	#8
dougo Registered User Join Date: Feb 2010 Location: Southern California Posts: 543	Re: New wheels and rubber!! Boss 338 man... that looks good. I love those wheels... one of my favorites. Nice work! __________________ Doug '72 GMC K2500 Suburban 4x4

03-02-2011, 01:00 AM	#9
Rooster's 67 Registered User Join Date: Sep 2003 Location: DFW Posts: 765	Re: New wheels and rubber!! Boss 338 whats the back spacing on the wheels? Last edited by Rooster's 67; 03-02-2011 at 01:03 AM.

03-02-2011, 01:05 AM	#10
gearys 5600 Registered User Join Date: Mar 2010 Location: tulsa,ok Posts: 1,085	Re: New wheels and rubber!! Boss 338 Lookin good. __________________ MY BUILD THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=423629 1969 custom/10 swb--SOLD 1968 swb 50th anniv.--SOLD 1967 camaro ss/rs..LS-6-speed, 16-year long project 1956 chevy nomad 1955 chevy 210 2-dr sedan 1978 el-camino ss 1-owner

03-02-2011, 10:07 AM	#11
68GenIII Registered User Join Date: Apr 2006 Location: Fort Walton Beach, FL Posts: 257	Re: New wheels and rubber!! Boss 338 Looks great!!! __________________ 68 lwb to swb Cummins swap in the works. I promise it will be cool someday.

03-02-2011, 10:10 AM	#12
Fastfun Registered User Join Date: Jun 2005 Location: Scottsdale, AZ Posts: 615	Re: New wheels and rubber!! Boss 338 THat looks GOOOOOOOOOD!!

03-02-2011, 08:47 PM	#13
0_71chevy Registered User Join Date: Jun 2010 Location: Dahlonega, Georgia Posts: 66	Re: New wheels and rubber!! Boss 338 edited Last edited by 0_71chevy; 03-02-2011 at 09:25 PM. Reason: posted twice

03-02-2011, 08:48 PM	#14
0_71chevy Registered User Join Date: Jun 2010 Location: Dahlonega, Georgia Posts: 66	Re: New wheels and rubber!! Boss 338 thanks again, heres the specs on the wheels

03-02-2011, 09:10 PM	#15
BOZO Old School Join Date: Jan 2010 Location: Dover,AR Posts: 185	Re: New wheels and rubber!! Boss 338 Nice stance. How much drop?PLEASE post pictures when its painted. __________________ #1 Project...69 Chevy swb Fleetside (Dad's truck) #2...1983 El Camino SS (Choo Choo Custom) #3...1974 Datsun truck (4.3L V6/4L60E) #4...1951 Cadillac Limo (1975 Caddy running gear) #5...1938 Dodge M38 3/4 ton Military truck #6...1968 Sportster XLCH trail bike 5 GMC & Chevy parts trucks 68 to 72 Last but not least; My 1978 Harley Davidson Electraglide (trusted & reliable companion for the last 30 years)

03-02-2011, 09:21 PM	#16
cstm68 Registered User Join Date: Jan 2007 Location: shoreline, wa Posts: 1,565	Re: New wheels and rubber!! Boss 338 wow looks awsome, ive got the same wheels (size and all) sitting on the shelf at work, just waiting for my 5 lug swap rotors. what rotors are you using? did you need to do anything to the rear to fit? how much did you take off the rotors? i also have a brake lathe at work so now that you posted thoes pics i can sleep at night...thanks. __________________ 68 swb fleet bagged on 20's 327 with 4 speed http://67-72chevytrucks.com/vboard/s...d.php?t=223308 2014 Chevy 2500hd duramax CCLB



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03-02-2011, 09:51 PM	#17
magwakeenercew2jh RAT1968 '68 Cab/'71 Parts Join Date: Feb 2002 Location: Coarsegold, CA Posts: 2,375	Re: New wheels and rubber!! Boss 338 I'm running an almost Identical set up. I don't know what kind of bed is going on this fine truck, but mine is a 1/2 ton Fleet with an ECE 4/6 drop, shock re-location kit and adjustable panhard bar. My wheels are 8.5/20 running Nexen 245/40's up front and 275/45 out back. I don't know the backspacing on the rear, but 82.8 mm (about 3.25") seems a little less than mine. Maybe not. I don't even know if the 20 x 10's come with varying backspaces. A couple of items: The removal of material from the front hubs can be done in 5 minutes with a hand-held grinder. If I can do it, it can be done by a moron. With my set up, I really needed to space the rear wheels out an inch. I accomplished that with some nice 1" (5 x 5) billit spacers. The picture below is BEFORE I put the spacer on. A two-minute install that makes the front and rear wheels appear to be on the same axis. Remember, the front stock "tracking" is about 2" wider, in all. But what the $60 fix (price of the spacers) really did was give me more than the "spacerless" 3/8" clearance had afforded between the inner of the rear tire and the inside of the inboard side of the wheel tub. An adjustable panhard bar make it "easy" to line up. Now, with the 275's in the rear, I have 1 3/8" inch clearance on each side. I didn't want to hijack. Just wanted to make sure that someone with my set up is prepped for the possibility of the clearance issue. I probably could have run them without the spacers. But 295's would have been out of the question with the 20's and MY back spacing and drop. If you don't want to run sacers, I'd find out what options you have for backspacing on the 20's. Attached Images __________________ M17 Coarsegold, CA RAT's shiny now. But always a rat. Last edited by magwakeenercew2jh; 03-02-2011 at 09:57 PM.

03-02-2011, 10:00 PM	#18
magwakeenercew2jh RAT1968 '68 Cab/'71 Parts Join Date: Feb 2002 Location: Coarsegold, CA Posts: 2,375	Re: New wheels and rubber!! Boss 338 Follow up. Here is the set-up WITH the spacer. You can't really tell from this angle, but there's plenty of clearance with the fender well, even at full compression. With 275/45's, anyway. Attached Images __________________ M17 Coarsegold, CA RAT's shiny now. But always a rat. Last edited by magwakeenercew2jh; 03-02-2011 at 10:06 PM.

03-03-2011, 08:53 AM	#19
mrhino Account Suspended Join Date: Aug 2007 Location: USA Posts: 1,223	Re: New wheels and rubber!! Boss 338 Great looking wheels, the minor modifications needed are worth it. Im running 18's and had no problem with the rear spacing. Is running a spacer only necessary with the 20's?

03-02-2011, 09:33 PM	#21
0_71chevy Registered User Join Date: Jun 2010 Location: Dahlonega, Georgia Posts: 66	Re: New wheels and rubber!! Boss 338 Don't worry when it gets out of the body shop pics will be posted ASAP!! Sure it will be a little while before everything is done as for the drop im not a 100% but i think its a 4/6 has Bell Spindles on the front and drop spring in the back but they were installed before i purchased the truck, the wheels picked it up about 1-2 inches though. Did not have to do anything to the rear drums to fit slid right on, had to trim off prob 3/4s of an inch in into the rotor and about an 1/8 of an inch or so shaved off i just took the rotors to work along with the wheel and would cut some then try to fit it on the wheel took maybe 20 minutes, not sure what type of lathe you have but i had to flip the arm over that are used for turning drums and flipped the bits worked perfect, if anyone in the area needs this done i'd be happy to help out. the rotors were also on the truck when i bought so i don't know much about them...

03-03-2011, 08:43 AM	#22
0_71chevy Registered User Join Date: Jun 2010 Location: Dahlonega, Georgia Posts: 66	Re: New wheels and rubber!! Boss 338 mine will also be a fleet bed, i guess i will cross that road when it comes the reason i went with a 295 instead of a 275 was the price, i could get the 295 for like a dollar more and i had heard a 275 gave it a balloon look on a 10 inch wheel, while the 295s were rated for a 9.5-11 inch wheel. difference in width was 3/4s of an inch over the 275s.

03-03-2011, 03:12 PM	#23
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: New wheels and rubber!! Boss 338 Looks like 6.225" BS on the 20x10's. PART # SIZE FINISH PATTERN OFFSET BSM CAP # LOAD SHIP WT. 3382-2012 20x10 Super Finish Black 5 on 4.5 35 mm 6.816 3248-06 1580 lbs. lbs. 3382-2015 20x10 Super Finish Black 5 on 115mm 20 mm 6.225 3248-06 1580 lbs. lbs. 3382-2021 20x10 Super Finish Black 5 on 120mm +32 mm 6.698 3248-06 1580 lbs. 35.1 lbs. 3382-2034 20x10 Super Finish Black 5 on 4.75 20 mm 6.225 3271-06 1580 lbs. lbs. 3382-2050 20x10 Super Finish Black 5 on 5 20 mm 6.225 3271-06 1580 lbs. lbs. 3382-2812 20x8.5 Super Finish Black 5 on 4.5 14 mm 5.239 3248-06 1580 lbs. lbs. 3382-2815 20x8.5 Super Finish Black 5 on 115mm 14 mm 5.239 3248-06 1580 lbs. lbs. 3382-2821 20x8.5 Super Finish Black 5 on 120mm +28 mm 5.790 3248-06 1580 lbs. lbs. 3382-2828 20x8.5 Super Finish Black 5 on 4.5 28 mm 5.790 3248-06 1580 lbs. lbs. 3382-2834 20x8.5 Super Finish Black 5 on 4.75 14 mm 5.239 3271-06 1580 lbs. lbs. 3382-2850 20x8.5 Super Finish Black 5 on 5 +14 mm 5.239 3271-06 1580 lbs. lbs. 3382-2881 20x8.5 Super Finish Black 5 on 4.75 28 mm 5.790 3248-06 1580 lbs. lbs. 3382-9812 18x8 Super Finish Black 5 on 4.5 +2 mm 4.517 3248-06 1580 lbs. lbs. 3382-9815 18x8 Super Finish Black 5 on 115mm +2 mm 4.517 3248-06 1580 lbs. lbs. 3382-9828 18x8 Super Finish Black 5 on 4.5 +14 mm 4.989 3248-06 1580 lbs. lbs. 3382-9834 18x8 Super Finish Black 5 on 4.75 +2 mm 4.517 3248-06 1580 lbs. lbs. 3382-9850 18x8 Super Finish Black 5 on 5 +2 mm 4.517 3248-06 1580 lbs. lbs. 3382-9912 18x9.5 Super Finish Black 5 on 4.5 -4 mm 5.031 3248-06 1580 lbs. lbs. 3382-9915 18x9.5 Super Finish Black 5 on 115mm -4 mm 5.031 3248-06 1580 lbs. lbs. 3382-9934 18x9.5 Super Finish Black 5 on 4.75 -4 mm 5.031 3248-06 1580 lbs. lbs. 3382-9950 18x9.5 Super Finish Black 5 on 5 -4 mm 5.031 3248-06 1580 lbs. lbs. 3386-2012 20x10 Chrome 5 on 4.5 35 mm 6.816 3248-06 1580 lbs. lbs. 3386-2015 20x10 Chrome 5 on 115mm 20 mm 6.225 3248-06 1580 lbs. lbs. 3386-2021 20x10 Chrome 5 on 120mm +32 mm 6.698 3248-06 1580 lbs. 35.1 lbs. 3386-2034 20x10 Chrome 5 on 4.75 20 mm 6.225 3271-06 1580 lbs. lbs. 3386-2050 20x10 Chrome 5 on 5 20 mm 6.225 3271-06 1580 lbs. lbs. 3386-2812 20x8.5 Chrome 5 on 4.5 14 mm 5.239 3248-06 1580 lbs. lbs. 3386-2815 20x8.5 Chrome 5 on 115mm 14 mm 5.239 3248-06 1580 lbs. lbs. 3386-2821 20x8.5 Chrome 5 on 120mm +28 mm 5.790 3248-06 1580 lbs. lbs. 3386-2828 20x8.5 Chrome 5 on 4.5 28 mm 5.790 3248-06 1580 lbs. lbs. 3386-2834 20x8.5 Chrome 5 on 4.75 14 mm 5.239 3271-06 1580 lbs. lbs. 3386-2850 20x8.5 Chrome 5 on 5 +14 mm 5.239 3271-06 1580 lbs. lbs. 3386-2881 20x8.5 Chrome 5 on 4.75 28 mm 5.790 3248-06 1580 lbs. lbs. 3386-9812 18x8 Chrome 5 on 4.5 +2 mm 4.517 3248-06 1580 lbs. lbs. 3386-9815 18x8 Chrome 5 on 115mm +2 mm 4.517 3248-06 1580 lbs. lbs. 3386-9828 18x8 Chrome 5 on 4.5 +14 mm 4.989 3248-06 1580 lbs. lbs. 3386-9834 18x8 Chrome 5 on 4.75 +2 mm 4.517 3248-06 1580 lbs. lbs. 3386-9850 18x8 Chrome 5 on 5 +2 mm 4.517 3248-06 1580 lbs. lbs. 3386-9912 18x9.5 Chrome 5 on 4.5 -4 mm 5.031 3248-06 1580 lbs. lbs. 3386-9915 18x9.5 Chrome 5 on 115mm -4 mm 5.031 3248-06 1580 lbs. lbs. 3386-9934 18x9.5 Chrome 5 on 4.75 -4 mm 5.031 3248-06 1580 lbs. lbs. 3386-9950 18x9.5 Chrome 5 on 5 -4 mm 5.031 3248-06 1580 lbs. lbs. 3387-2012 20x10 Super Finish Grey 5 on 4.5 35 mm 6.816 3248-06 1580 lbs. lbs. 3387-2015 20x10 Super Finish Grey 5 on 115mm 20 mm 6.225 3248-06 1580 lbs. lbs. 3387-2021 20x10 Super Finish Grey 5 on 120mm +32 mm 6.698 3248-06 1580 lbs. 35.1 lbs. 3387-2034 20x10 Super Finish Grey 5 on 4.75 20 mm 6.225 3271-06 1580 lbs. lbs. 3387-2050 20x10 Super Finish Grey 5 on 5 20 mm 6.225 3271-06 1580 lbs. lbs. 3387-2812 20x8.5 Super Finish Grey 5 on 4.5 14 mm 5.239 3248-06 1580 lbs. lbs. 3387-2815 20x8.5 Super Finish Grey 5 on 115mm 14 mm 5.239 3248-06 1580 lbs. lbs. 3387-2821 20x8.5 Super Finish Grey 5 on 120mm +28 mm 5.790 3248-06 1580 lbs. lbs. 3387-2828 20x8.5 Super Finish Grey 5 on 4.5 28 mm 5.790 3248-06 1580 lbs. lbs. 3387-2834 20x8.5 Super Finish Grey 5 on 4.75 14 mm 5.239 3271-06 1580 lbs. lbs. 3387-2850 20x8.5 Super Finish Grey 5 on 5 +14 mm 5.239 3271-06 1580 lbs. lbs. 3387-2881 20x8.5 Super Finish Grey 5 on 4.75 28 mm 5.790 3248-06 1580 lbs. lbs. 3387-9812 18x8 Super Finish Grey 5 on 4.5 +2 mm 4.517 3248-06 1580 lbs. lbs. 3387-9815 18x8 Super Finish Grey 5 on 115mm +2 mm 4.517 3248-06 1580 lbs. lbs. 3387-9828 18x8 Super Finish Grey 5 on 4.5 +14 mm 4.989 3248-06 1580 lbs. lbs. 3387-9834 18x8 Super Finish Grey 5 on 4.75 +2 mm 4.517 3248-06 1580 lbs. lbs. 3387-9850 18x8 Super Finish Grey 5 on 5 +2 mm 4.517 3248-06 1580 lbs. lbs. 3387-9912 18x9.5 Super Finish Grey 5 on 4.5 -4 mm 5.031 3248-06 1580 lbs. lbs. 3387-9915 18x9.5 Super Finish Grey 5 on 115mm -4 mm 5.031 3248-06 1580 lbs. lbs. 3387-9934 18x9.5 Super Finish Grey 5 on 4.75 -4 mm 5.031 3248-06 1580 lbs. lbs. 3387-9950 18x9.5 Super Finish Grey 5 on 5 -4 mm 5.031 3248-06 1580 lbs. lbs. 3389-9834 18x8 Polished 5 on 4.75 +2 mm 4.517 3248-06 1580 lbs. 26 lbs. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 03-03-2011 at 03:16 PM.

03-03-2011, 03:20 PM	#24
Foosified Registered User Join Date: Oct 2006 Location: Edmonton, AB, CAN. Posts: 152	Re: New wheels and rubber!! Boss 338 boss 20x10's are 6.225" BS. With a 295 wide tire a spacer will most likely be required to avoid rubbing on inner portion of wheel tub and and to make it look good a spacer should be used. 1 - 1.25" spacer should do the trick, as I believe was stated earlier. The 18's come either 9.5" or 8" wide, but the BS on the 9.5's is better than the 20x10's at 5.031. No spacers needed. Lip on the 18's is almost 3/4" deeper than the 20x10's. lolife beat me to it! __________________ May all your ups and downs be in the back of a Chevy!: Last edited by Foosified; 03-03-2011 at 03:21 PM.

03-03-2011, 04:55 PM	#25
cstm68 Registered User Join Date: Jan 2007 Location: shoreline, wa Posts: 1,565	Re: New wheels and rubber!! Boss 338 iv got 20x10's for the rear of mine but dont have them on yet cuz im waiting on 5 lug axles from cpp, will i need a spacer for the rear to clear the center of the axle or is the bore on the wheel big enough? __________________ 68 swb fleet bagged on 20's 327 with 4 speed http://67-72chevytrucks.com/vboard/s...d.php?t=223308 2014 Chevy 2500hd duramax CCLB

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