Performance
Thread Starter
1st Gear
Joined: Dec 2014
Posts: 1
Likes: 0
From: San Diego Ca
Performance
Hi everyone new to the thread & forum world. I have a 1986 Corvette 105,xxx miles... only thing done to it is a bigger throttle body, k&n air filter, and flowmaster exhaust. looking to replace my valve guides soon and figured might as well do a complete overhall while i have it apart and was wondering what some easy performance modifications would be thanks!!
Last edited by breezee13; Dec 30, 2014 at 06:16 PM.
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
Hi everyone new to the thread & forum world. I have a 1986 Corvette 105,xxx miles... only thing done to it is a bigger throttle body, k&n air filter, and flowmaster exhaust. looking to replace my valve guides soon and figured might as well do a complete overhall while i have it apart and was wondering what some easy performance modifications would be thanks!!
gears, LT1 cats or elimination, headers, quality 1.6 roller rockers apprx .30+ lift, a slight gain. Lower stat, TB iac coolant bypass. Prom Tune!
depends on your goal. And your wallet limit.
Team Owner
Joined: Jul 2004
Posts: 28,378
Likes: 3,261
From: Hartford WI
When I rebuilt, I changed the cam to match the AFR heads, intake and headers. Also the Roller Rockers were 1.5 and 1.6 to match the cam profile. Dyno tuning.
While you are there, dump the injectors if they are stock Multecs. Change the fuel pressure regulator and the hoses. Your K&N and the TB don't make power really unless the rest of the pieces are supporting it.
Team Owner
Joined: Jul 2004
Posts: 28,378
Likes: 3,261
From: Hartford WI
basics first. The TB on a stock TPI, unless it was free. Money was wasted.
gears, LT1 cats or elimination, headers, quality 1.6 roller rockers apprx .30+ lift, a slight gain. Lower stat, TB iac coolant bypass. Prom Tune!
depends on your goal. And your wallet limit.
gears, LT1 cats or elimination, headers, quality 1.6 roller rockers apprx .30+ lift, a slight gain. Lower stat, TB iac coolant bypass. Prom Tune!
depends on your goal. And your wallet limit.
Instructor
Joined: Nov 2013
Posts: 154
Likes: 1
Hi everyone new to the thread & forum world. I have a 1986 Corvette 105,xxx miles... only thing done to it is a bigger throttle body, k&n air filter, and flowmaster exhaust. looking to replace my valve guides soon and figured might as well do a complete overhall while i have it apart and was wondering what some easy performance modifications would be thanks!!
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
Technically if you install a bigger TB and do not re-tune, your AFR is now against your true potential. It's a proven fact the ported / larger TB will deliver more CFM this will pay off especially with heads, Cam, inj, intake.
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Team Owner
Joined: Jul 2004
Posts: 28,378
Likes: 3,261
From: Hartford WI
1st as I stated on a stock engine, The TB is a Waste of money.
Technically if you install a bigger TB and do not re-tune, your AFR is now against your true potential. It's a proven fact the ported / larger TB will deliver more CFM this will pay off especially with heads, Cam, inj, intake.
Technically if you install a bigger TB and do not re-tune, your AFR is now against your true potential. It's a proven fact the ported / larger TB will deliver more CFM this will pay off especially with heads, Cam, inj, intake.