305 TBI to 350 TPI???
#1
Member
Thread Starter
Join Date: Jul 2001
Location: Chicago, IL
Posts: 295
Likes: 0
Received 0 Likes
on
0 Posts
305 TBI to 350 TPI???
I'm back in the game after a two year absence. Well I'm about a few days away from pickig up an 89 Formula 305 TBI for next to nothing.
I'd pass on the car in favor of a TPI set-up but the price can't be beat.
I'm not the mechanic I like to think I am but am a quick learner. What can be kept between the swap from a 305 TBI to a 350 TPI??? I'd like to hear some war stories from people who have already been down that road for the do's and do not's of the swap.
My goal is a car that will do consistant 12.5's. As the car will be doing double duty, street/strip.
Still have parts that never went on from an earlier project that got T-boned....
Sub-frames
custom CAI system
AFPR
air foil
SLP runners
ported out plenum from an 88 vette
and other misc interior items....
I'd pass on the car in favor of a TPI set-up but the price can't be beat.
I'm not the mechanic I like to think I am but am a quick learner. What can be kept between the swap from a 305 TBI to a 350 TPI??? I'd like to hear some war stories from people who have already been down that road for the do's and do not's of the swap.
My goal is a car that will do consistant 12.5's. As the car will be doing double duty, street/strip.
Still have parts that never went on from an earlier project that got T-boned....
Sub-frames
custom CAI system
AFPR
air foil
SLP runners
ported out plenum from an 88 vette
and other misc interior items....
#2
Supporter/Moderator
iTrader: (7)
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 13,247
Likes: 0
Received 392 Likes
on
299 Posts
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Well I assume you know that both motors can use the same exhaust. Now if you are going to be running 12's you will need a full 3" exhaust from the motor to the tail pipes. You are going to need the wire harness and ECM from the 350. I would ditch the stock TPI induction in favor of a miniram, stealth ram, super ram or LT1 intake conversion (that is if you are strict on your goal of 12's). You can re-use all of the front acessories off of the 305 and use them on the 350. You will need a high flow fuel pump as well.
This is just some of the basics. Here is a tech article on swapping TBI to TPI. Motor size is irrelavent for this article. You will need whatever it says on top of what ever motor you choose.
This is just some of the basics. Here is a tech article on swapping TBI to TPI. Motor size is irrelavent for this article. You will need whatever it says on top of what ever motor you choose.
#4
Junior Member
Join Date: Jul 2004
Location: SE Ga
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
Car: '91 Camaro
Engine: 305ciV8LO3TBI
Transmission: Auto.
Just for information about the TBI vs TPI, check out SPO Technology Central, a different perspective to consider! Good Luck
#5
Supreme Member
Join Date: Aug 2002
Location: San Pedro, Ca
Posts: 1,413
Likes: 0
Received 0 Likes
on
0 Posts
Car: White KSwisses
Engine: 5.3L Gen III
Originally posted by ShiftyCapone
Well I assume you know that both motors can use the same exhaust. Now if you are going to be running 12's you will need a full 3" exhaust from the motor to the tail pipes. You are going to need the wire harness and ECM from the 350. I would ditch the stock TPI induction in favor of a miniram, stealth ram, super ram or LT1 intake conversion (that is if you are strict on your goal of 12's). You can re-use all of the front acessories off of the 305 and use them on the 350. You will need a high flow fuel pump as well.
This is just some of the basics. Here is a tech article on swapping TBI to TPI. Motor size is irrelavent for this article. You will need whatever it says on top of what ever motor you choose.
Well I assume you know that both motors can use the same exhaust. Now if you are going to be running 12's you will need a full 3" exhaust from the motor to the tail pipes. You are going to need the wire harness and ECM from the 350. I would ditch the stock TPI induction in favor of a miniram, stealth ram, super ram or LT1 intake conversion (that is if you are strict on your goal of 12's). You can re-use all of the front acessories off of the 305 and use them on the 350. You will need a high flow fuel pump as well.
This is just some of the basics. Here is a tech article on swapping TBI to TPI. Motor size is irrelavent for this article. You will need whatever it says on top of what ever motor you choose.
Do you need to remain smog legal? If not, for the price, an LT1 intake is a good option. Get a cam to match the intake as well as the stall converter.
Dont skimp on the chassis/suspension. LCA's and brackets, shocks/struts and springs, a torque arm, and strut tower brace. The chassis/suspension is the key to cutting good 60' times.
#7
Supporter/Moderator
iTrader: (7)
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 13,247
Likes: 0
Received 392 Likes
on
299 Posts
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by ARBOC
Where is this article? 305 tbi to 350 tpi?
Where is this article? 305 tbi to 350 tpi?
Here it is for you
TBI to TPI
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post