Got some new wheels: Boss 338's in 20x10 and 20x8.5 - Page 51 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**nlped** · 10-30-2012, 10:02 PM

I don't have the CPP kit, but I do have the McGaughy 13" kit (same hub and rotor) and my 1st Gen wheels fit without issue.
Posted via Mobile Device

hardwaa · 11-17-2012, 04:29 AM

Brandon's Truck.

These wheels are work to make them fit, but it is SO worth it when done correctly!

Here is some motivation for you all.

Z10 · 11-17-2012, 12:29 PM

Finally got around to taking a pic with my 338

245/40/18 and 275/30/20 Nitto's. I do have 2/4 drop springs to install so that should help, but I think I need a 294/45/20 rears.

LEX · 11-17-2012, 12:44 PM

Quote:

Originally Posted by hardwaa

Brandon's Truck.

These wheels are work to make them fit, but it is SO worth it when done correctly!

Here is some motivation for you all.

Beautiful truck!

AZChevyland · 11-19-2012, 05:01 PM

Did this. Ground rotors up front. Spacers in rear. Measure 3 times before ordering spacers if you want it tight. 20" wheels, 10" wide in back with 6.23 bs, 8.5" wide in front with 5.24 bs.

**nlped** · 11-19-2012, 05:08 PM

^^^ Good looking truck!!!
Posted via Mobile Device

heathbirkendahl · 11-19-2012, 05:38 PM

Great looking ride and wheels!!!

bugmasta · 11-27-2012, 08:21 PM

so without reading through 50+ pages of jibber jabber, can someone confirm or deny if the new wheels do or do not fit '72 front rotors without having to grind the hub?

**lolife99** · 11-27-2012, 08:35 PM

Quote:

Originally Posted by bugmasta

so without reading through 50+ pages of jibber jabber, can someone confirm or deny if the new wheels do or do not fit '72 front rotors without having to grind the hub?

No.
You will have to grind the hub. Period.
Just like in the picture.
(4 posts before this one).

bugmasta · 11-27-2012, 08:47 PM

Quote:

Originally Posted by lolife99

No.
You will have to grind the hub. Period.
Just like in the picture.
(4 posts before this one).

perfect, thats what i needed to know. also, will 4.5 backspace fit? its actually a 68 c20 with conversion drop spindles to use 72 front components.

HotRod C/10 · 11-27-2012, 08:51 PM

Quote:

Originally Posted by AZChevyland

Did this. Ground rotors up front. Spacers in rear. Measure 3 times before ordering spacers if you want it tight. 20" wheels, 10" wide in back with 6.23 bs, 8.5" wide in front with 5.24 bs.

very nice! is that a narrow rearend or the wider 71-72? where did you get the spacers from and what size did you use on it?

**lolife99** · 11-27-2012, 08:53 PM

Quote:

Originally Posted by bugmasta

perfect, thats what i needed to know. also, will 4.5 backspace fit? its actually a 68 c20 with conversion drop spindles to use 72 front components.

I personally would rather have the 5.25" BS on a 8.5" wide front wheel.

krawler00 · 12-04-2012, 02:40 PM

Finally scrounged enough cash together to get everything done. Looks pretty good. Now to lower the rear 1-2". I need functionality so no more dropping for me. 20x8.5 front 20x10 rear.

Z10 · 12-04-2012, 04:39 PM

Quote:

Originally Posted by krawler00

Finally scrounged enough cash together to get everything done. Looks pretty good. Now to lower the rear 1-2". I need functionality so no more dropping for me. 20x8.5 front 20x10 rear.

What size tires are you running?

krawler00 · 12-05-2012, 12:48 PM

I am running 275 45 20 tires all the way around. I was going to stagger the front width but decided to just get a narrower wheel. I did not want directional either. I like to rotate my tires. At least side to side is better than nothing.

HotRod C/10 · 12-16-2012, 08:14 PM

Specs:
Narrow rearend
5 1/2" Backspace Boss 338's (rear)
Toyo Proxes II's 295/40R20
1" hub centric spacer from here. https://www.ezaccessory.com/ProductD...ode=5500-5500P

AZChevyland · 12-17-2012, 06:17 PM

Quote:

Originally Posted by HotRod C/10

very nice! is that a narrow rearend or the wider 71-72? where did you get the spacers from and what size did you use on it?

this 67 truck has the 71-72 rearend which, like you know, is wider.

big mike71 · 12-17-2012, 08:15 PM

Quote:

Originally Posted by AZChevyland

this 67 truck has the 71-72 rearend which, like you know, is wider.

Your truck is sweet, I like it alot.

toddrh1 · 02-24-2013, 05:35 AM

4 years after buying them my 18's are on and my 69 has 5-lug power disc brakes. What a difference.
Posted via Mobile Device
Posted via Mobile Device

LakeAnna · 02-24-2013, 07:09 AM

Quote:

Originally Posted by toddrh1

4 years after buying them my 18's are on and my 69 has 5-lug power disc brakes. What a difference.
Posted via Mobile Device
Posted via Mobile Device

4 years! I would have gone crazy looking at them that long... Looks good and I guess they fit without issue?

toddrh1 · 02-24-2013, 02:23 PM

Quote:

Originally Posted by LakeAnna

4 years! I would have gone crazy looking at them that long... Looks good and I guess they fit without issue?

I had the typical issues. Ground the rotor nose and used 1/4" spacers with longer studs. Rear fit perfect.
Posted via Mobile Device
Posted via Mobile Device

ksbrktracer · 02-24-2013, 04:35 PM

Ttt

ksbrktracer · 03-01-2013, 09:14 PM

Ttt

HotRod C/10 · 03-01-2013, 09:22 PM

my buddy is looking for 20's in a 338 8.5 up front (5.25 offset) and 10's (5.5 offset) for the back.....chrome

ksbrktracer · 03-01-2013, 09:42 PM

Quote:

Originally Posted by hotrod c/10

my buddy is looking for 20's in a 338 8.5 up front (5.25 offset) and 10's (5.5 offset) for the back.....chrome

see vendor section or call 918-845-1935

10-30-2012, 10:02 PM	#1251
nlped Senior Member Join Date: Jul 2009 Location: Hayden, Al. Posts: 4,147	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 I don't have the CPP kit, but I do have the McGaughy 13" kit (same hub and rotor) and my 1st Gen wheels fit without issue. Posted via Mobile Device Attached Images __________________ Carter 1968 Chevy SWB Fleet... Walt 1963-1/2 Ford Falcon Futura...Martha

11-17-2012, 04:29 AM	#1252
hardwaa Registered User Join Date: Sep 2007 Location: gilbert, az Posts: 777	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Brandon's Truck. These wheels are work to make them fit, but it is SO worth it when done correctly! Here is some motivation for you all. Attached Images __________________ I LOVE BURNOUTS:metal NO BOZO's

11-17-2012, 12:29 PM	#1253
Z10 Registered User Join Date: Aug 2012 Location: Midland, TX Posts: 1,267	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Finally got around to taking a pic with my 338 245/40/18 and 275/30/20 Nitto's. I do have 2/4 drop springs to install so that should help, but I think I need a 294/45/20 rears. Attached Images __________________ 1969 RS/SS Z10 Camaro Pace coupe 1972 GMC Short Step buildhttp://67-72chevytrucks.com/vboard/s...=1#post6356218 1979 Mazda RX7 1979 Pontiac Trans Am WS6 & 1979 Pontiac Trans Am 10th Anniversary 1999 Honda Valkyrie 2006 Corvette Z06 2010 BMW 650i

11-19-2012, 05:01 PM	#1255
AZChevyland Registered User Join Date: Apr 2010 Location: Phoenix Arizona Posts: 69	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Did this. Ground rotors up front. Spacers in rear. Measure 3 times before ordering spacers if you want it tight. 20" wheels, 10" wide in back with 6.23 bs, 8.5" wide in front with 5.24 bs. Attached Images __________________ J&S Sideyard Projects......we will be at...... Dino's 3rd annual Pre-ShowGit Down

11-19-2012, 05:08 PM	#1256
nlped Senior Member Join Date: Jul 2009 Location: Hayden, Al. Posts: 4,147	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 ^^^ Good looking truck!!! Posted via Mobile Device __________________ Carter 1968 Chevy SWB Fleet... Walt 1963-1/2 Ford Falcon Futura...Martha

11-19-2012, 05:38 PM	#1257
heathbirkendahl Registered User Join Date: Jul 2012 Location: Campbell, CA Posts: 452	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Great looking ride and wheels!!! __________________ 1971 C/10 - Orange & White 2009 GMC 1500 - Lowered 3/4 22' KMC Slides

11-27-2012, 08:21 PM	#1258
bugmasta Registered User Join Date: Aug 2009 Location: North Bend, WA Posts: 272	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 so without reading through 50+ pages of jibber jabber, can someone confirm or deny if the new wheels do or do not fit '72 front rotors without having to grind the hub?

12-04-2012, 02:40 PM	#1263
krawler00 Registered User Join Date: Feb 2012 Location: Winder Posts: 27	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Finally scrounged enough cash together to get everything done. Looks pretty good. Now to lower the rear 1-2". I need functionality so no more dropping for me. 20x8.5 front 20x10 rear. Attached Images

12-05-2012, 12:48 PM	#1265
krawler00 Registered User Join Date: Feb 2012 Location: Winder Posts: 27	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 I am running 275 45 20 tires all the way around. I was going to stagger the front width but decided to just get a narrower wheel. I did not want directional either. I like to rotate my tires. At least side to side is better than nothing.

12-16-2012, 08:14 PM	#1266
HotRod C/10 Registered User Join Date: Feb 2012 Location: Albuquerque NM Posts: 3,053	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Specs: Narrow rearend 5 1/2" Backspace Boss 338's (rear) Toyo Proxes II's 295/40R20 1" hub centric spacer from here. https://www.ezaccessory.com/ProductD...ode=5500-5500P __________________ SOLD -77 CHEYENNE SWB, LS SWAPPED -1976 SILVERADO YUBA GOLD/NEUTRAL (2-TONE)

02-24-2013, 05:35 AM	#1269
toddrh1 Registered User Join Date: Feb 2009 Location: portland oregon Posts: 13	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 4 years after buying them my 18's are on and my 69 has 5-lug power disc brakes. What a difference. Posted via Mobile Device Posted via Mobile Device Attached Images

02-24-2013, 04:35 PM	#1272
ksbrktracer TNT-MOTORSPORTS Join Date: Mar 2008 Location: TULSA OKLAHOMA Posts: 2,692	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Ttt Last edited by ksbrktracer; 03-20-2013 at 08:41 AM.

03-01-2013, 09:14 PM	#1273
ksbrktracer TNT-MOTORSPORTS Join Date: Mar 2008 Location: TULSA OKLAHOMA Posts: 2,692	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 Ttt Last edited by ksbrktracer; 03-20-2013 at 08:39 AM.

03-01-2013, 09:22 PM	#1274
HotRod C/10 Registered User Join Date: Feb 2012 Location: Albuquerque NM Posts: 3,053	Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5 my buddy is looking for 20's in a 338 8.5 up front (5.25 offset) and 10's (5.5 offset) for the back.....chrome __________________ SOLD -77 CHEYENNE SWB, LS SWAPPED -1976 SILVERADO YUBA GOLD/NEUTRAL (2-TONE)



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