GMC compatibility with Chevy - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Benelli · 12-24-2009, 01:57 AM

My friend is buying a 1977 GMC Sierra 1/2 Ton 2wd, I have a few questions.

I have a set of tires laying around (they'll fit), he wants them...and in trade he will give me the grillguard on it. He doesn't like them.

Will the grillguard off the '77 GMC fit my '79 K10?

Will my old q-jet fit on it if it has the stock intake manifold?

Will the hoods interchange? (Wants to cut up mine to try to make a home-made cowl because it's starting to crumple)

Lastly, are there any differences in the tail lights? It's missing them and I have 4 pairs laying around.

**thinair** · 12-24-2009, 02:02 AM

all the same

Benelli · 12-24-2009, 02:03 AM

Good news. Thanks.

JohnC · 12-24-2009, 09:41 AM

Just about the only differences in the Chevy's and GMC's is in trims. Grilles, emblems, etc..

Mr.Scary · 12-24-2009, 12:20 PM

yep!! just bout everything u can think of should b interchangible

*C-10 simplex* · 12-24-2009, 03:11 PM

i think after 69/70 ish, GMC became identical with chevy. And were and are built on the same assm line.

This blows me away as i thought that GMC always used chevy engines and used the exact, same chassis.

But no! GMC made their own engines all the way to 74 and used some of their own in the own trucks exclusively.

3r!c84 · 12-24-2009, 03:45 PM

Quote:

Originally Posted by C-10 simplex

i think after 69/70 ish, GMC became identical with chevy. And were and are built on the same assm line.

This blows me away as i thought that GMC always used chevy engines and used the exact, same chassis.

But no! GMC made their own engines all the way to 74 and used some of their own in the own trucks exclusively.

wait what motors where in 73s trucks chevy

and gmc

?

*C-10 simplex* · 12-24-2009, 08:12 PM

Quote:

Originally Posted by 3r!c84

wait what motors where in 73s trucks chevy

and gmc

?

Yes, i meant for light duty trucks by 73 ALL gmc light duty trucks used chevy engines. GMC still made their own engines for medium dutys---a fascinating topic in and of itself.

i think from 60 to 68, you could only get a gmc pickup with a gmc 6 cyl. And before that, they used pontiac engines.

TwoFiftyShifter · 12-25-2009, 01:31 AM

Quote:

Originally Posted by C-10 simplex

Yes, i meant for light duty trucks by 73 ALL gmc light duty trucks used chevy engines. GMC still made their own engines for medium dutys---a fascinating topic in and of itself.

i think from 60 to 68, you could only get a gmc pickup with a gmc 6 cyl. And before that, they used pontiac engines.

You could actually get 1960-1968 GMC pickups with 230/ 292 and 283 chevy motors. My 64 GMC is an original 230. Most gmc's of that era had their own V6 though.

12-24-2009, 01:57 AM	#1
Benelli Watchin the rust grow Join Date: Oct 2008 Location: Western Nebraska Posts: 950	GMC compatibility with Chevy My friend is buying a 1977 GMC Sierra 1/2 Ton 2wd, I have a few questions. I have a set of tires laying around (they'll fit), he wants them...and in trade he will give me the grillguard on it. He doesn't like them. Will the grillguard off the '77 GMC fit my '79 K10? Will my old q-jet fit on it if it has the stock intake manifold? Will the hoods interchange? (Wants to cut up mine to try to make a home-made cowl because it's starting to crumple) Lastly, are there any differences in the tail lights? It's missing them and I have 4 pairs laying around. __________________ 1979 Chevy K10 (H/D Front end) - 350 w/ Holley Truck Avenger, Weinald Intake manifold, headers, bored .060 over, mild cam, Built up TH350 (TranStar Shift kit) with a part-timed NP203 t-case SOLD ($3,000) 1997 Chevy Silverado 1500 - 4.3 vortec, extended cab, 21 highway MPG, stock. "Red" SOLD ($3,000) 1987 Toyota 4wd Pick-up - work in progress, future DD SOLD ($1,850) 1998 Dodge Ram 2500 Cummins 5spd Quad cab - old 12 valve with some work done 2004 Chevy Silverado - Black, 4x4, 5.3L, stock for now Underneath that rust is a heart of gold Last edited by Benelli; 12-24-2009 at 01:59 AM.

12-24-2009, 02:02 AM	#2
thinair thinair Join Date: Jun 2004 Location: omaha,ne Posts: 1,008	Re: GMC compadibility with Chevy all the same

12-24-2009, 02:03 AM	#3
Benelli Watchin the rust grow Join Date: Oct 2008 Location: Western Nebraska Posts: 950	Re: GMC compadibility with Chevy Good news. Thanks. __________________ 1979 Chevy K10 (H/D Front end) - 350 w/ Holley Truck Avenger, Weinald Intake manifold, headers, bored .060 over, mild cam, Built up TH350 (TranStar Shift kit) with a part-timed NP203 t-case SOLD ($3,000) 1997 Chevy Silverado 1500 - 4.3 vortec, extended cab, 21 highway MPG, stock. "Red" SOLD ($3,000) 1987 Toyota 4wd Pick-up - work in progress, future DD SOLD ($1,850) 1998 Dodge Ram 2500 Cummins 5spd Quad cab - old 12 valve with some work done 2004 Chevy Silverado - Black, 4x4, 5.3L, stock for now Underneath that rust is a heart of gold

12-24-2009, 09:41 AM	#4
JohnC Registered User Join Date: Feb 2009 Location: Oklahoma Posts: 7,461	Re: GMC compadibility with Chevy Just about the only differences in the Chevy's and GMC's is in trims. Grilles, emblems, etc..

12-24-2009, 12:20 PM	#5
Mr.Scary Project Optimus Prime Join Date: Jan 2009 Location: Dallas, TX Posts: 346	Re: GMC compadibility with Chevy yep!! just bout everything u can think of should b interchangible __________________ 84 SWB work in progress 89 burb 1500 (parts pig) LOL 08 ford focus (I know, I know) Wifes car "I said it b4 and i'll say it agian wiring is my worst enemy":devil:

12-24-2009, 03:11 PM	#6
C-10 simplex Account Suspended Join Date: Dec 2008 Location: indisclosed Posts: 1,515	Re: GMC compatibility with Chevy i think after 69/70 ish, GMC became identical with chevy. And were and are built on the same assm line. This blows me away as i thought that GMC always used chevy engines and used the exact, same chassis. But no! GMC made their own engines all the way to 74 and used some of their own in the own trucks exclusively.



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