3/4 ton owners...question about fitting late model factory wheels - The 1947 - Present Chevrolet & GMC Truck Message Board Network

superchevy · 11-27-2004, 09:41 AM

I was thinking about putting late model '04 Chevy/GMC 8-lugs on my '77 C-20. Is this possible, or is it only the '02 and earlier 8 lugs that will fit?
Any problems with hub centers or fitment I should watch out for?
Thanks for the help,
SC

OhioDan · 11-27-2004, 09:57 AM

I put 02 Rally wheels on my 70 GMC 3/4. Fit is good. Only problem I found, was they came with 1/2" lug nuts, and on the rear I have drum brakes with 7/16" studs. Front disc off of a 71 Burb have 1/2" studs. Didn't really want to have rear drums and axles drilled for 1/2" studs. Lug nuts supplied have the plastic screw on covers. Found some 7/16"-ID lugnuts at a swap meet that will work just fine for the rear, and the plastic covers fit good. They fit good in the rims(no slop, even when tightened by hand before ya torque them down), the bevel is correct(V), so I went with them. Hope this helps?

**N2TRUX** · 11-27-2004, 11:14 AM

Let me know if you need a set... Wheel pics

Longhorn Man · 11-27-2004, 01:25 PM

What about the back spacing...don't they look kinda goofey tucked in as much as they do?

72moneypit · 11-27-2004, 02:02 PM

Quote:

Originally Posted by Longhorn Man

What about the back spacing...don't they look kinda goofey tucked in as much as they do?

I've seen a couple pics of our vintage trucks with the newer wheels, and I think they do "tuck in" too far. I was considering them for my truck, but decided against them for that very reason.

On the other hand, I've heard LOTS of people comment that they really like them, so I think I'm in the minority.

**N2TRUX** · 11-27-2004, 02:20 PM

Quote:

Originally Posted by Longhorn Man

What about the back spacing...don't they look kinda goofey tucked in as much as they do?

I have seen a few and they didn't tuck that far. Things things are pretty flat on front. I'll have to measure them to see what backspace they are.

Anyone got pics?

Blazer1970 · 11-27-2004, 02:34 PM

All GM 8 lug wheels (SRW applications, all years) have the same bolt pattern and offset. They do not tuck in any further than the original wheels. The late model 6 lug wheels do have about 2 inches more backspacing than the '87 and older wheels. People keep confusing the 6 and 8 lug wheels in answers to this type of question.

Longhorn Man · 11-28-2004, 01:24 AM

Tim, you sure about that? look at how much rim is sticking out on the outside...an inch, maybe an inch and a half. All the old wheels I've seen stick out quite a bit more.
I have steel wheels off a later van on my one ton, the back spacing is all wrong, and it isn't as drastic as the wheels in the picture...and they look flat out retarded on my truck.

chickenwing · 11-28-2004, 01:45 AM

The 8-lugs fit my 72 3/4 ton just fine. The center caps do not fit directly on the dana 60 axle. You need either a 1/2 wheel spacer or you can just double lug the nuts. It's a pain when you change a tire, 16 lug nuts! That's what I did, got the idea from Solver. The lug nuts themselves you need some conversion ones. The later trucks went metric on the lug nuts not the bolt pattern. The lugnuts are 9/16" on mine. Got all 32 of em for like 40 bucks on ebay. The 04 ones will definately not work.

Found a link for some lugnuts. http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW

Here's a link for some spacers. http://cgi.ebay.com/ebaymotors/ws/eB...936867913&rd=1

Dunno the backspacing. I think they fill out just fine under my truck. I had a 75 step-side once. Went with stock tires. Hated em. With all that wheelwell left I was reminded of the wheels on a lil red wagon.

crosby · 11-28-2004, 01:32 AM

hello, how about late model 8 lugs on my 98 K2500 suburban? It's 8 lug, and I think they would look great on it, if the backspacing is okay... Thanks!

Longhorn Man · 11-28-2004, 01:53 AM

not trying to talk bad about your ride...it looks to be 10 times the truck of all the trucks I've had combined...
but you don't think the wheels look too tucked in?
Makes me think of a fat man on stilts.
Again...no disrespect...

chickenwing · 11-28-2004, 02:08 AM

None taken. I don't think they look bad at all. Wheels size looks a heck of a lot better n the stock wheels on my old 75 . Hope you don't get me all paranoid about it now!

One more thing what's a SRW?

superchevy · 11-28-2004, 11:21 AM

Thanks for the responses guys.
I found a set of 16x8 Eagle billets with 4" backspacing for $250, new in the box. I'm going with those.
Thanks for the help,
SC

Longhorn Man · 11-28-2004, 01:05 PM

Quote:

One more thing what's a SRW?

I just spent 10 min looking at my posts on this thread looking for a stupid typo...LOL

No idea what Blazer1970 was refering to.

Blazer1970 · 11-28-2004, 01:48 PM

SRW = Single Rear Wheel. Dually wheels are totally different.

**PICKMUP** · 11-28-2004, 06:12 PM

These are a great inexpensive wheel that doesn't require any maintenance, like alum wheels. There are lots of them around and often you can find them as new takeoffs with tires for ready to go savingsl...and the offset is just fine. They don't stick out of the fenders, so what the heck.

chickenwing · 11-28-2004, 06:17 PM

Those do fill up the fenderwells better. Same size rim though just bigger tires?

11-27-2004, 09:41 AM	#1
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	3/4 ton owners...question about fitting late model factory wheels I was thinking about putting late model '04 Chevy/GMC 8-lugs on my '77 C-20. Is this possible, or is it only the '02 and earlier 8 lugs that will fit? Any problems with hub centers or fitment I should watch out for? Thanks for the help, SC __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

11-27-2004, 09:57 AM	#2
OhioDan Registered User Join Date: Apr 2002 Location: New Carlisle, Ohio,USA Posts: 1,404	I put 02 Rally wheels on my 70 GMC 3/4. Fit is good. Only problem I found, was they came with 1/2" lug nuts, and on the rear I have drum brakes with 7/16" studs. Front disc off of a 71 Burb have 1/2" studs. Didn't really want to have rear drums and axles drilled for 1/2" studs. Lug nuts supplied have the plastic screw on covers. Found some 7/16"-ID lugnuts at a swap meet that will work just fine for the rear, and the plastic covers fit good. They fit good in the rims(no slop, even when tightened by hand before ya torque them down), the bevel is correct(V), so I went with them. Hope this helps? __________________ LIFE AIN'T EASY WHEN YER FAT AND GREASY! GMC= Got More Class! 1970 GMC LWB, Fleetside, 350/4spd, Flowmaster "40's", 2002 GMC 16" Rallies, cowl hood,and added a bunch of options that weren't there when I started. Last edited by OhioDan; 11-27-2004 at 05:09 PM.

11-27-2004, 02:34 PM	#7
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	All GM 8 lug wheels (SRW applications, all years) have the same bolt pattern and offset. They do not tuck in any further than the original wheels. The late model 6 lug wheels do have about 2 inches more backspacing than the '87 and older wheels. People keep confusing the 6 and 8 lug wheels in answers to this type of question. __________________ Tim

11-28-2004, 01:45 AM	#9
chickenwing Lovin' Life in Miss.! Join Date: Mar 2004 Location: Puckett, Mississippi Posts: 1,937	The 8-lugs fit my 72 3/4 ton just fine. The center caps do not fit directly on the dana 60 axle. You need either a 1/2 wheel spacer or you can just double lug the nuts. It's a pain when you change a tire, 16 lug nuts! That's what I did, got the idea from Solver. The lug nuts themselves you need some conversion ones. The later trucks went metric on the lug nuts not the bolt pattern. The lugnuts are 9/16" on mine. Got all 32 of em for like 40 bucks on ebay. The 04 ones will definately not work. Found a link for some lugnuts. http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW Here's a link for some spacers. http://cgi.ebay.com/ebaymotors/ws/eB...936867913&rd=1 Dunno the backspacing. I think they fill out just fine under my truck. I had a 75 step-side once. Went with stock tires. Hated em. With all that wheelwell left I was reminded of the wheels on a lil red wagon. Attached Images __________________ The truck... you hear that? No really, you did hear that?!!! Last edited by chickenwing; 11-28-2004 at 02:04 AM.

11-28-2004, 02:08 AM	#12
chickenwing Lovin' Life in Miss.! Join Date: Mar 2004 Location: Puckett, Mississippi Posts: 1,937	None taken. I don't think they look bad at all. Wheels size looks a heck of a lot better n the stock wheels on my old 75 . Hope you don't get me all paranoid about it now! One more thing what's a SRW? __________________ The truck... you hear that? No really, you did hear that?!!! Last edited by chickenwing; 11-28-2004 at 02:10 AM.

11-27-2004, 11:14 AM	#3
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Let me know if you need a set... Wheel pics

11-27-2004, 01:25 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	What about the back spacing...don't they look kinda goofey tucked in as much as they do?

11-28-2004, 01:24 AM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Tim, you sure about that? look at how much rim is sticking out on the outside...an inch, maybe an inch and a half. All the old wheels I've seen stick out quite a bit more. I have steel wheels off a later van on my one ton, the back spacing is all wrong, and it isn't as drastic as the wheels in the picture...and they look flat out retarded on my truck.

11-28-2004, 01:32 AM	#10
crosby Registered User Join Date: Aug 2004 Location: New Hampshire Posts: 437	hello, how about late model 8 lugs on my 98 K2500 suburban? It's 8 lug, and I think they would look great on it, if the backspacing is okay... Thanks!

11-28-2004, 01:53 AM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	not trying to talk bad about your ride...it looks to be 10 times the truck of all the trucks I've had combined... but you don't think the wheels look too tucked in? Makes me think of a fat man on stilts. Again...no disrespect...

11-28-2004, 11:21 AM	#13
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Thanks for the responses guys. I found a set of 16x8 Eagle billets with 4" backspacing for $250, new in the box. I'm going with those. Thanks for the help, SC __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

11-28-2004, 01:48 PM	#15
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	SRW = Single Rear Wheel. Dually wheels are totally different. __________________ Tim

11-28-2004, 06:12 PM	#16
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,158	88 & newer ralleys These are a great inexpensive wheel that doesn't require any maintenance, like alum wheels. There are lots of them around and often you can find them as new takeoffs with tires for ready to go savingsl...and the offset is just fine. They don't stick out of the fenders, so what the heck. Attached Images __________________ Email: frankeham@comcast.net Phone: 360-956-7170

11-28-2004, 06:17 PM	#17
chickenwing Lovin' Life in Miss.! Join Date: Mar 2004 Location: Puckett, Mississippi Posts: 1,937	Those do fill up the fenderwells better. Same size rim though just bigger tires? __________________ The truck... you hear that? No really, you did hear that?!!!



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.