Truck power loss

Asked by Aug 08, 2014 at 02:37 PM about the 1991 GMC Sierra C/K 1500

Question type: Maintenance & Repair

Loss of power my balls 91 gmc 1500
how do I give it horsepower back

2 Answers

455

I assume here that the truck otherwise runs fine, but you have lost horsepower thru loss of compression. Let me know if that is incorrect. In order to regain compression you will need to hone the cylinders and replace your piston rings at the least. You should regain some lost compression. If you want to spend a lot more money you can further increase horse power by over boring the cylinders, increasing piston size, increase carburetor and intake manifold size to allow more fuel and air mixture into the cylinder, add a performance cam to handle the new high performance pistons, and add higher flow exhaust, etc, etc.

1 of 1 people found this helpful.

Yet another excellent, articulate and accurate answer jonny. Only problem is if you by any chance live in Calif., don't change exhaust. It's "tampering' and will never pass smog=never be able to register. That 1991 4.3 has single port throttle body fuel injection

1 of 1 people found this helpful.

Your Answer

Sierra C/K 1500

Looking for a Used Sierra C/K 1500 in your area?

CarGurus has 2 nationwide Sierra C/K 1500 listings and the tools to find you a great deal.

ZIP:

GMC Sierra C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    160
  • #2
    enginecreator
    Reputation
    130
  • #3
    John Saffrahn
    Reputation
    120
View All

Related Models For Sale

Used GMC Sierra 1500
797 Great Deals out of 67,452 listings starting at $1,350
Used Ford F-150
2,146 Great Deals out of 181,741 listings starting at $1,000
Used GMC Sierra
29 listings
Used GMC Yukon
426 Great Deals out of 20,820 listings starting at $2,495
Used Chevrolet C/K 1500
887 listings starting at $3,195

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.