Anybody have any pics of the Boss 338's 20" - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HSkinner · 06-22-2011, 08:56 PM

Pics and back spacing? So far this appears to be the best bang for the buck. Any thoughts? I really like this style. Heath

Slow Build · 06-23-2011, 01:52 AM

I like them a lot. Too bad you need to use spacers to run them.

HSkinner · 06-23-2011, 02:53 AM

why do you have to use spacers?

**lolife99** · 06-23-2011, 03:13 AM

Boss 338 wheel specs,...
http://www.bossmotorsports.com/wheel...ecs.cfm?id=408

6.225" BS on the 20x10's and 5.239" BS on the 20x8.5's.
The 10" rear wheel backspacing requires you to run a 1" spacer, depending on which rearend you have in the truck.
A larger spacer is required if you try to run the 20x8.5's on the rear of the truck.
(They are "tucked in" too far)
Up front the 20x8.5's are fine.

Have you seen this thread about front rotor fitment issues?
http://67-72chevytrucks.com/vboard/showthread.php?t=352320&highlight=boss+338
(It spans about 22 months starting in 2009)
Take a couple hours and read it.

HSkinner · 06-23-2011, 04:51 AM

I put the rear axle out of a 1996 impala so it is 1.5 inches narrower on each side. Will I still have to run spacers?

**lolife99** · 06-23-2011, 04:54 AM

Quote:

Originally Posted by HSkinner

I put the rear axle out of a 1996 impala so it is 1.5 inches narrower on each side. Will I still have to run spacers?

A narrower rear axle house makes the problem worse.
I would look at a different wheel.

kieth · 06-23-2011, 08:58 AM

Spacers get a bad wrap, some folks think they weaken a installation because they "overload the wheel studs. Reality is that if they are high quality they do not weaken anything, When you calculate the load the studs see the only thing that matters is the distance from the outside of the wheel to the location of the studs. A spacer does not change this loading it justs looks different. Kieth

i.e. wide wheel with no spacers-- the lugs and studs see the same loading as a vehicle with spacers and the same width wheel with no or little offset....(late model camaro wheels)

HSkinner · 06-23-2011, 06:32 PM

any other reccomendations on another wheel like this?

06-22-2011, 08:56 PM	#1
HSkinner Registered User Join Date: Jul 2010 Location: Snowflake Az. Posts: 86	Anybody have any pics of the Boss 338's 20" Pics and back spacing? So far this appears to be the best bang for the buck. Any thoughts? I really like this style. Heath

06-23-2011, 01:52 AM	#2
Slow Build Registered User Join Date: Sep 2009 Location: California Delta Posts: 2,163	Re: Anybody have any pics of the Boss 338's 20" I like them a lot. Too bad you need to use spacers to run them. __________________ Name: Rich Current Ride: 1964 C-10 Short Fleetside Daily Driver: 2005 GMC crew cab short fleetside /2001 Chevy Tahoe Past GM Trucks: 1959 GMC short stepside 1968 GMC short stepside-4x4 1973 Chevy short stepside 1989 Chevy short fleetside-reg cab 1993 Chevy short fleetside-Xcab 2002 Chevy short fleetside-Xcab Save the dinosaurs, use synthetic oil.

06-23-2011, 02:53 AM	#3
HSkinner Registered User Join Date: Jul 2010 Location: Snowflake Az. Posts: 86	Re: Anybody have any pics of the Boss 338's 20" why do you have to use spacers?

06-23-2011, 03:13 AM	#4
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,691	Re: Anybody have any pics of the Boss 338's 20" Boss 338 wheel specs,... http://www.bossmotorsports.com/wheel...ecs.cfm?id=408 6.225" BS on the 20x10's and 5.239" BS on the 20x8.5's. The 10" rear wheel backspacing requires you to run a 1" spacer, depending on which rearend you have in the truck. A larger spacer is required if you try to run the 20x8.5's on the rear of the truck. (They are "tucked in" too far) Up front the 20x8.5's are fine. Have you seen this thread about front rotor fitment issues? http://67-72chevytrucks.com/vboard/showthread.php?t=352320&highlight=boss+338 (It spans about 22 months starting in 2009) Take a couple hours and read it. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 06-23-2011 at 03:15 AM.

06-23-2011, 04:51 AM	#5
HSkinner Registered User Join Date: Jul 2010 Location: Snowflake Az. Posts: 86	Re: Anybody have any pics of the Boss 338's 20" I put the rear axle out of a 1996 impala so it is 1.5 inches narrower on each side. Will I still have to run spacers?

06-23-2011, 08:58 AM	#7
kieth Registered User Join Date: Sep 2010 Location: Tulsa, Oklahoma Posts: 1,925	Re: Anybody have any pics of the Boss 338's 20" Spacers get a bad wrap, some folks think they weaken a installation because they "overload the wheel studs. Reality is that if they are high quality they do not weaken anything, When you calculate the load the studs see the only thing that matters is the distance from the outside of the wheel to the location of the studs. A spacer does not change this loading it justs looks different. Kieth i.e. wide wheel with no spacers-- the lugs and studs see the same loading as a vehicle with spacers and the same width wheel with no or little offset....(late model camaro wheels)

06-23-2011, 06:32 PM	#8
HSkinner Registered User Join Date: Jul 2010 Location: Snowflake Az. Posts: 86	Re: Anybody have any pics of the Boss 338's 20" any other reccomendations on another wheel like this?



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