GMC vs Chevy

[bestof1999]

I know this is the most stupid thing anyone could ask, but is there any difference between the GMC and Chevy 5.7l. Looking for rebuild kits and Everything says chevy. Can i use those kits in a GMC??

 

[Sierra]

They are the same. What year model?

 

[bestof1999]

1999 350 vortec suburban

 

[Sierra]

The vortec 5.7L is the same for chevy and gmc. They are interchangeable.

Just do not use a rebuild kit from a 95 down 5.7 as they are TBI and non roller.

 

[bestof1999]

Yep, almost made that mistake... Got this Suburban From a guy.. main Bearing spun and im just rebuilding the thing.. 150k i figured why not. Gotta pull the engine anyways, thanks for the help

 

[highperf4x4]

Spun main bearing is bad news. Ruins the crank for sure and likely the block too.

 

[bestof1999]

oh tell me about it.. Getting a good deal on it thought selling an old truck with a cracked block its a good deal.. So can i swap a non vortec v8 into it? Is it just a Intake manifold swap?

 

[highperf4x4]

Crack sensor would be a problem if you're sticking with the computer. My truck is carbureted with HEI ignition and mechanical fuel pump.

 

[highperf4x4]

And this is my 2 piece rear main carbureted Vortec 383 [emoji48]

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[kennythewelder]

The only diffrence in a Chevy, and a GMC, is the grill, and the name plates. Eveything else is the same and interchangeable, as longe as the years are the same. There are some changes between certain years. 95 down are TBI non Vortec. 96 up are Vortec CPI engines. Same block, different fuel delivery and different ECMs, different heads, intake, ECT. There are more sensors on a Vortec engine also. The early 400s had a few different features also, but the engines were the same till 96. The 96 up got a different grill and interior also.