TBI to TPI
Thread Starter
Junior Member
Joined: Jan 2005
Posts: 1
Likes: 0
Car: 89 RS
Engine: 305 TBI
Transmission: T-5
TBI to TPI
I have a few questions about TBI to TPI swap. I have a 1989 RS 305 (LO3) T-5 I want to change it to TPI. I already have an o2, map, knock sensors. What else do I need to complete this project? Will I have to change out my cam? 
Member
Joined: Dec 2004
Posts: 129
Likes: 0
From: Southern, Maryland
Car: 06 Trailblazer SS
Engine: 6.0 LS2
Axle/Gears: 4.10
You don't have to change the cam but it would be a great time to do so. I see you are new (like me) its allot of info on this site. Do some searching. What is your goal? to boost perf? or just to have a TPI car? If you are looking to boost performance, how much?
Supreme Member
Joined: Feb 2004
Posts: 1,159
Likes: 2
From: Munster IN
Car: 92 RS, 05 GTO (sold), 10 TL AWD
Engine: 383 HSR w/DSC1
Transmission: 700r4
Axle/Gears: Strange S60/3.73
I just did it, my problems were that I needed little hoses and vaccum fittings, they were the biggest pain in the butt. I also got the kit from S&P to do the wiring change. pricey though. my website has some pics from the swap.
Thread
Thread Starter
Forum
Replies
Last Post
evilstuie
Tech / General Engine
22
Jan 9, 2020 08:29 PM
Sanjay
Engine/Drivetrain/Suspension Parts for Sale
1
Aug 12, 2015 03:41 PM