Got some new wheels: Boss 338's in 20x10 and 20x8.5 - Page 44 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

VA72C10 · 10-01-2011, 01:07 AM

I am sure you can grind the small amount needed off with no issues. That's what everyone else has to do to get the rotors to fit properly...just do a little at a time and test fit until it fits correctly.

relaxedsierra · 10-01-2011, 02:05 AM

Will have to ask my friend what he is running

relaxedsierra · 10-01-2011, 02:09 AM

Quote:

Originally Posted by relaxedsierra

My buddies truck...

mcbassin · 10-01-2011, 07:51 AM

Quote:

Originally Posted by relaxedsierra

My buddies truck...

Looks like your buddy is running Coys.

Andy4639 · 10-01-2011, 08:29 AM

Quote:

Originally Posted by funkytechmonkey

check page 41.

Back to my question... Is it safe for me to grind on this rotor or will I screw something up? whats my best option?

I would be ordering a new rotor!

big mike71 · 10-01-2011, 11:17 AM

That's a sweet GMC.

dkauffman05 · 10-01-2011, 11:34 AM

Has anyone put any 18x9.5 on the rear of a 67-70 step. Im bout to take the plunge and i know i will prob need a 1-1/14 spacer depending on tire. If so what tire size did you go with .

dkauffman05 · 10-01-2011, 07:37 PM

I was thinking 285-50-18

BossHogg69 · 10-01-2011, 11:12 PM

Yes, and you don't need a spacer for the 18s. I have them on my 69 stepper. If you use 1.25" spacer, the outer edge our your tire will get shredded by your fender! If anything, maybe a .25" just to center up the wheel in the fender from side to side so they don't sit in too far, and that's only if you're really picky (like me). I actually used a .5" spacer and totally cut out the fender lip, but I'm going for a little different look, and what I did was not necessary to make the wheels fit.

nt30 · 10-03-2011, 11:42 AM

Subscribing for updates.
Posted via Mobile Device

brossow · 10-03-2011, 12:14 PM

Quote:

Originally Posted by nt30

Subscribing for updates.
Posted via Mobile Device

FYI, you can subscribe to a thread using the "Thread Tools" menu at the top of every page; you don't need to post just to subscribe. No harm done -- just mentioning it since a lot of people don't know this.

Welcome to the site!

Brent

tattoed71 · 10-19-2011, 02:21 PM

check out the ridler 5 spoke wheel there similar to the 338s but they fit with no problem and come and gray center and black center i bought a set for my 71 love em and easier on the wallet then the 338s

brossow · 10-19-2011, 02:30 PM

Quote:

Originally Posted by tattoed71

check out the ridler 5 spoke wheel there similar to the 338s but they fit with no problem and come and gray center and black center i bought a set for my 71 love em and easier on the wallet then the 338s

And they're made in China, not in the USA like the Boss wheels.

1967wannabe · 10-19-2011, 02:59 PM

Quote:

Originally Posted by brossow

And they're made in China, not in the USA like the Boss wheels.

You beat me to the punch, I was gonna say "Hecho en?"

dkauffman05 · 10-28-2011, 06:45 PM

I just dropped my 67 stepside 5-7 plan on buying some 338s this week you guys think i can run a 295-45-18 in the rear ? i do have a adj track bar.

funkytechmonkey · 10-28-2011, 06:52 PM

That's what I ordered at first then realized they were a little taller than I wanted so I decided to go with 295 40 20... Now they are on backorder for 3 weeks
Posted via Mobile Device

dkauffman05 · 10-29-2011, 05:51 PM

Does the latest 18x9.5 have a 94.62 hub bore ? i hope so i had my stock axles redrilled today to 5x5 and tried some vett ralleys on but they would not go over my hub. from what i can find on the net the 5x5 338's are a 94.62 bore which will is about 3.725" and my axles are around 3.5 roughly using a tape. Just want someone to confirm before i have to put my axles in the lathe.

Andy4639 · 10-29-2011, 06:54 PM

Mine fit fine with no problems on the rear.

dkauffman05 · 10-29-2011, 07:05 PM

so you have stock axles ? was your truck already 5 lug ?

**lolife99** · 10-29-2011, 08:36 PM

Quote:

Originally Posted by dkauffman05

Does the latest 18x9.5 have a 94.62 hub bore ? i hope so i had my stock axles redrilled today to 5x5 and tried some vett ralleys on but they would not go over my hub. from what i can find on the net the 5x5 338's are a 94.62 bore which will is about 3.725" and my axles are around 3.5 roughly using a tape. Just want someone to confirm before i have to put my axles in the lathe.

Usually the center hub of the 6-lug axles needs to be turned down to the 5x5 dimension to allow the 71-72 style brake drum to fit.
Some after market rear disc brake kits require the axle to be turned down even more.
I would match the axle's center hub dimension, to the brake drum or disc brake hat,... which ever you are using.

dkauffman05 · 10-29-2011, 09:53 PM

I am using stock drums that have been redrilled. I need to know if the wheel bore is big enough .94.62mm = 3.725" is what i read somewhere but the boss site dosen't list bore. if what i read is true it should work with no lathe work. I just don't want to do it if not needed

41willys · 01-18-2012, 02:32 PM

I'm thinking of replacing my old rims and I like the BOSS 338'S. I've got the 1.25" rotors and planning a 5" static drop front and back. Any thoughts on 18" vs. 20" rims? Wondering if BOSS made any changes to this model wheel in as far as the center caps not having a flush fit due to the rotor hat length?

**rob32472** · 01-18-2012, 07:25 PM

I recently bought a set of these and the hub had to be clearanced only a little on the nose for the wheel to slide onto the rotor. I did it with a belt sander while still on the truck. It took all of five minutes per side and I had ZERO issues with the cap. IMHO they are the best bang for your buck when it comes to wheels....

magwakeenercew2jh · 01-18-2012, 07:47 PM

Quote:

Originally Posted by rob32472

I recently bought a set of these and the hub had to be clearanced only a little on the nose for the wheel to slide onto the rotor.
I did it with a belt sander while still on the truck. It took all of five minutes per side and I had ZERO issues with the cap. IMHO they are the best bang for
your buck when it comes to wheels....

Agreed.

Same thing here. But I used a grinder while the rotors were (also) still on the truck. 4-6 ECE stat. drop with shocks,
shock re-locators, etc. 20" X 8.5" up front, 20" x 10" in rear. I used 1" spacers in the rear for bed clearance and to balance up the track a little.

The rear wheels (10's) I have are probably earlier B/S at something like 3.24" or something like that...But I haven't heard anything definitive about
the wheels being deeper after they came out with the bigger inch back-spacing.

I would have liked the rear to have a wider (deeper) rim...But I'm happy.

piecesparts · 01-19-2012, 08:12 PM

86 Chevy SWB with 18 X8.5 up front and 20 X 10s in the back. Using a wheel adapter to offset the rear to fit the fenders and a thin 1/4" spacer on the front hub with a longer wheel stud in the hubs. 1.25" brakes with the hub center smoothed for fitment.

10-01-2011, 01:07 AM	#1076
VA72C10 VA72C10 Join Date: Mar 2008 Location: Midlothian, VA Posts: 25,269	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 I am sure you can grind the small amount needed off with no issues. That's what everyone else has to do to get the rotors to fit properly...just do a little at a time and test fit until it fits correctly. __________________ Looking for a 67-72 swb or blazer project in or around VA.

10-01-2011, 02:05 AM	#1077
relaxedsierra Registered User Join Date: Sep 2011 Location: Southaven,MS Posts: 39	Will have to ask my friend what he is running Last edited by relaxedsierra; 10-01-2011 at 02:25 AM.

10-01-2011, 11:17 AM	#1081
big mike71 Registered User Join Date: Mar 2009 Location: independence mo Posts: 2,111	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 That's a sweet GMC. __________________ I'm not as good as I once was, But I'm as good once as I ever was.

10-01-2011, 11:34 AM	#1082
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 417	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Has anyone put any 18x9.5 on the rear of a 67-70 step. Im bout to take the plunge and i know i will prob need a 1-1/14 spacer depending on tire. If so what tire size did you go with .

10-01-2011, 07:37 PM	#1083
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 417	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 I was thinking 285-50-18

10-01-2011, 11:12 PM	#1084
BossHogg69 motor exploder Join Date: Mar 2009 Location: Pittsburgh, PA Posts: 2,346	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Yes, and you don't need a spacer for the 18s. I have them on my 69 stepper. If you use 1.25" spacer, the outer edge our your tire will get shredded by your fender! If anything, maybe a .25" just to center up the wheel in the fender from side to side so they don't sit in too far, and that's only if you're really picky (like me). I actually used a .5" spacer and totally cut out the fender lip, but I'm going for a little different look, and what I did was not necessary to make the wheels fit. __________________ Adam 1969 Chevy CST/10 stepside, DART Big M/TREMEC Magnum Extreme/3.73's w/Detroit Truetrac 1965 Chevy Bel Air Wagon (daily driver), 327/TH350,10 bolt w/3.08's 1961 Chevy Bel Air Sport Coupe, ZZ454/M21/9" rear w/3.50's & Detroit Truetrac 2005 GMC 1500 ccsb 2wd, 6.0L/4L65e/3.73 G80 2006 GMC 2500HD ccsb 4x4, DMax LBZ/Allison 6spd/4.56's w/Detroit TrueTrac Use the SEARCH function on this forum - it is your friend!! Last edited by BossHogg69; 10-01-2011 at 11:22 PM.

10-03-2011, 11:42 AM	#1085
nt30 Registered User Join Date: Sep 2011 Location: Boston,MA Posts: 75	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Subscribing for updates. Posted via Mobile Device

10-19-2011, 02:21 PM	#1087
tattoed71 Registered User Join Date: Jul 2011 Location: abilene,Texas Posts: 149	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 check out the ridler 5 spoke wheel there similar to the 338s but they fit with no problem and come and gray center and black center i bought a set for my 71 love em and easier on the wallet then the 338s

10-28-2011, 06:45 PM	#1090
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 417	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 I just dropped my 67 stepside 5-7 plan on buying some 338s this week you guys think i can run a 295-45-18 in the rear ? i do have a adj track bar.

10-28-2011, 06:52 PM	#1091
funkytechmonkey Registered User Join Date: Jan 2011 Location: Lawrenceville, GA Posts: 1,080	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 That's what I ordered at first then realized they were a little taller than I wanted so I decided to go with 295 40 20... Now they are on backorder for 3 weeks Posted via Mobile Device __________________ Never wrenched a day in my life and now... Im doing a frame off restoration on a 1968 C10 with a Porterbuilt Dropmember, Acuair E-Level kit, Boyd Welds Gas tank and mild c-notch. Click here to view my build

10-29-2011, 05:51 PM	#1092
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 417	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Does the latest 18x9.5 have a 94.62 hub bore ? i hope so i had my stock axles redrilled today to 5x5 and tried some vett ralleys on but they would not go over my hub. from what i can find on the net the 5x5 338's are a 94.62 bore which will is about 3.725" and my axles are around 3.5 roughly using a tape. Just want someone to confirm before i have to put my axles in the lathe.

10-29-2011, 06:54 PM	#1093
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Mine fit fine with no problems on the rear. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

10-29-2011, 07:05 PM	#1094
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 417	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 so you have stock axles ? was your truck already 5 lug ?

10-29-2011, 09:53 PM	#1096
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 417	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 I am using stock drums that have been redrilled. I need to know if the wheel bore is big enough .94.62mm = 3.725" is what i read somewhere but the boss site dosen't list bore. if what i read is true it should work with no lathe work. I just don't want to do it if not needed

01-18-2012, 02:32 PM	#1097
41willys Registered User Join Date: Dec 2011 Location: Paducah, Kentucky Posts: 16	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 I'm thinking of replacing my old rims and I like the BOSS 338'S. I've got the 1.25" rotors and planning a 5" static drop front and back. Any thoughts on 18" vs. 20" rims? Wondering if BOSS made any changes to this model wheel in as far as the center caps not having a flush fit due to the rotor hat length?



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01-18-2012, 07:25 PM	#1098
rob32472 Registered User Join Date: May 2007 Location: dallas ga Posts: 1,505	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 I recently bought a set of these and the hub had to be clearanced only a little on the nose for the wheel to slide onto the rotor. I did it with a belt sander while still on the truck. It took all of five minutes per side and I had ZERO issues with the cap. IMHO they are the best bang for your buck when it comes to wheels....

01-19-2012, 08:12 PM	#1100
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 86 Chevy SWB with 18 X8.5 up front and 20 X 10s in the back. Using a wheel adapter to offset the rear to fit the fenders and a thin 1/4" spacer on the front hub with a longer wheel stud in the hubs. 1.25" brakes with the hub center smoothed for fitment. Attached Images __________________ Frank

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