Other than the injectors, what's the difference between these motors? I believe the heads are also different but what about the crank/emission parts etc....
Difference between 5.0 Tpi and 5.7 Tpi ext and int plz help
- Thread starter Bowtieheart
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Re: Difference between 5.0 Tpi and 5.7 Tpi ext and int plz h
external, nothing except injector size. The same setup was used on both engines. Internal the 305 and 350 had different heads, crank, bore size, pistons, cam. Just like any 305 to 350 comparison. What are you trying to do?
external, nothing except injector size. The same setup was used on both engines. Internal the 305 and 350 had different heads, crank, bore size, pistons, cam. Just like any 305 to 350 comparison. What are you trying to do?
Re: Difference between 5.0 Tpi and 5.7 Tpi ext and int plz h
I'm going to be picking up a parts car which is an 85 Iroc 305 Tpi and have that motor built to a 355 with the 350 heads etc... I will be using the wire harness, trans, motor, ecu and complete intake mani. Of course ported.
I'm going to be picking up a parts car which is an 85 Iroc 305 Tpi and have that motor built to a 355 with the 350 heads etc... I will be using the wire harness, trans, motor, ecu and complete intake mani. Of course ported.
Re: Difference between 5.0 Tpi and 5.7 Tpi ext and int plz h
Make a bunch of threads about the same thing :lol: .seawolf18 said:
Re: Difference between 5.0 Tpi and 5.7 Tpi ext and int plz h
Just for info, the '85 was a "b*st*rd" year for the ECM. It has a daughterboard attached to the side of the ECM, and is known to be flaky. I believe you can re-wire the harness and connectors for an '86 up ECM. You will need new injectors for the 350, along with a new Knock Sensor and a 350 ESC module. You can get by with the 305 stuff ( excluding the injectors), but it runs better with the right parts. Lots of info / spreadsheets /links on my website.
https://sites.google.com/site/darbyselky/home
Just for info, the '85 was a "b*st*rd" year for the ECM. It has a daughterboard attached to the side of the ECM, and is known to be flaky. I believe you can re-wire the harness and connectors for an '86 up ECM. You will need new injectors for the 350, along with a new Knock Sensor and a 350 ESC module. You can get by with the 305 stuff ( excluding the injectors), but it runs better with the right parts. Lots of info / spreadsheets /links on my website.
https://sites.google.com/site/darbyselky/home
Re: Difference between 5.0 Tpi and 5.7 Tpi ext and int plz h
Lol not exactly, just very new to American Muscle and enjoying every learning moment. That being said, I picked up an 85 I-Roc parts car today and swapped out the ugly Daytons the Cutlass came with. Now the Cutlass has some nice, shiny, chrome 16 inch I-Rocs🙂 Will definitely post pics tomorrow, finished late due to having to hammer the Daytons off and on. My only problem is the rear wheels rub the frame. The tires are 245/45/16. Would a 1 inch spacer fix this or can I settle for a 1/4 inch spacer?
DRIVEN said:
Lol not exactly, just very new to American Muscle and enjoying every learning moment. That being said, I picked up an 85 I-Roc parts car today and swapped out the ugly Daytons the Cutlass came with. Now the Cutlass has some nice, shiny, chrome 16 inch I-Rocs🙂 Will definitely post pics tomorrow, finished late due to having to hammer the Daytons off and on. My only problem is the rear wheels rub the frame. The tires are 245/45/16. Would a 1 inch spacer fix this or can I settle for a 1/4 inch spacer?
Re: Difference between 5.0 Tpi and 5.7 Tpi ext and int plz h
Wiki is not a good source of info....
The 5.7 TPI was an option for the IROC and Z28 packages only in 1985
Bowtieheart said:
Wiki is not a good source of info....
The 5.7 TPI was an option for the IROC and Z28 packages only in 1985
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