i am about to start a rebuild on a 1980 gmc with a 350. i am a avid hunter and need it for pulling a large trailer up some steep mountains on highway and sometimes up trails (tires depending).

Asked by Oct 23, 2015 at 11:12 AM about the GMC Jimmy

Question type: General

its is an automatic tranny with a 4 barrel edlebroc. Pretty sure the rest of it is stock. Looking for the best option  as far as performance camshaft and possibly boring maybe .30 over....maybe aluminum heads? it has a single exhaust thinking of dropping another pipe on it?

2 Answers


All sounds nice, few suggestions, first is are you keeping the carb? As far as the block, .030 over is fine, go with a flat-top piston, The cam, a sports cam would be ok, i went with Com Cams, look them up on the net, tell them how you want your motor, they can make the right recommendation for intake, carb. & heads. Holley can match you up also. You'll have to decide how much gas mileage you want to loose, but a good old Chevy motor you just can't beat. Aluminum heads are expensive, You would want shorty headers, and on mine i put a Mega Flow 3" dia. exhaust on, single in & duals out the back end. The key is to match everything, (pistons, cam, intake, carb. heads. exhaust). I just built a motor for my truck, but i wanted a go fast motor, ended up with 400hp.

1 of 1 people found this helpful.

wow now that's a power plant to be proud of hope mine will turn out as well

Your Answer

Add photo

Related Questions

Search GMC Jimmy Questions

GMC Jimmy Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 280
#2 tennisshoes
Reputation 260
#3 1oldman
Reputation 240
View All

Related Models For Sale

Used Chevrolet Blazer
3 Great Deals out of 1,188 listings starting at $1,820
Used GMC Sierra 1500
760 Great Deals out of 69,126 listings starting at $1,850
Used GMC Yukon
381 Great Deals out of 19,299 listings starting at $2,000
Used GMC Envoy
62 Great Deals out of 2,161 listings starting at $850
Used Chevrolet S-10
5 Great Deals out of 1,310 listings starting at $2,695
Used Ford F-150
2,059 Great Deals out of 207,339 listings starting at $1,499
Used Chevrolet Tahoe
558 Great Deals out of 31,371 listings starting at $1,500
Used Chevrolet Silverado 1500
1,765 Great Deals out of 181,201 listings starting at $250
Used Ford Bronco
203 listings
Used Dodge Ram 1500
410 Great Deals out of 10,833 listings starting at $1,400
Used GMC Terrain
534 Great Deals out of 31,353 listings starting at $4,450
Used Chevrolet TrailBlazer
96 Great Deals out of 4,752 listings starting at $999
Used GMC Acadia
528 Great Deals out of 46,451 listings starting at $2,000
Used Toyota 4Runner
258 Great Deals out of 19,021 listings starting at $2,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.