Heads n Sparks
Thread Starter
Racer
Joined: Apr 2007
Posts: 367
Likes: 1
From: Shakopee Minnesota
Heads n Sparks
I NEED new plug wires, the wires are factory, so I'm going to replace the spark plugs as well... How do I know if I have cast Iron or Aluminum heads? '86, don't know if its early or late.
How are these...? http://www.mamotorworks.com/corvette-3-140-3120.html
So my next question is what kind of hp and torque gains can I expect from porting and polishing my stock heads, and shaving them 60/1000's. Thanks.
How are these...? http://www.mamotorworks.com/corvette-3-140-3120.html
So my next question is what kind of hp and torque gains can I expect from porting and polishing my stock heads, and shaving them 60/1000's. Thanks.
Last edited by JonnyAngle; Feb 9, 2008 at 12:55 AM.
