Performance Upgrade
Thread Starter
Junior Member
Joined: Feb 2004
Posts: 53
Likes: 0
From: Maryland
Car: 1987 GTA
Engine: 350
Transmission: Auto
Performance Upgrade
Hi, Has anyone modified their existing 350 TPI and kept it street legal? I'm wondering what can be done to this engine and still meet the emission requirements. I'm thinking cam swap, head reworking, new pistons, timing gears & chain, roller lifters and using the existing TPI system. One of the problems is whether to maintain the existing air pump system and the other is whether to upgrade the base ECM or add a hyper chip. Looking for ideas from other TA owners who have upgraded their engines.
Thanks,
Laser
Thanks,
Laser
Supreme Member
Joined: Mar 2004
Posts: 3,935
Likes: 0
If you do a search, for modifying tpi, you will finds tons of info on how to do what. As far as the air pump and stuff, make triple sure that you do not have emmissions requirements, because if you do you will definately want that stuff.
TGO Supporter
Joined: Jul 2003
Posts: 4,803
Likes: 2
From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
judging by the fact that he said "still meet emissions requirements" i think he has emissions. So keep that stuff.
Do a search. But some of the basics are:
exhaust: make sure they have AIR tubes. I have SLP headers with AIR tubes. get a good cat and catback.
Chip/ECM: leave these alone for now. Dont spend money on hyperjunk.
why do you need new roller lifters? unless you meant roller rockers, in which case yea go for it.
Do a search. But some of the basics are:
exhaust: make sure they have AIR tubes. I have SLP headers with AIR tubes. get a good cat and catback.
Chip/ECM: leave these alone for now. Dont spend money on hyperjunk.
why do you need new roller lifters? unless you meant roller rockers, in which case yea go for it.
Thread
Thread Starter
Forum
Replies
Last Post