tpi in a c3
Thread Starter
Heel & Toe
Joined: Sep 2011
Posts: 23
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From: cedar city utah
tpi in a c3
Has any one put a tuned port in a c3 using
the original headers into side pipes? I have a tpi out of a 90 trans am complete w/700r4 and a painless harness i was going to use in my 55 however i have been contemplating putting it in my 74 vette but i want to keep my side pipes & headers,I know it has been done,but has any one here done this,
the original headers into side pipes? I have a tpi out of a 90 trans am complete w/700r4 and a painless harness i was going to use in my 55 however i have been contemplating putting it in my 74 vette but i want to keep my side pipes & headers,I know it has been done,but has any one here done this,
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,113
From: Crossville TN
The drivetrain would certainly justify the transfer to the C3. You can make the side pipes fit, as required when you get it installed. That would be an ideal combination for your car. {Then put the C3 drivetrain in your '55!}
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
You only need one O2 sensor for a TPI setup, make sure it's heated because if you're running headers you'll have to have it a bit too far away from the exhaust port.
I know early TPI cars (MAF) do not use heated O2s. You'll have to wire up for that.
I know early TPI cars (MAF) do not use heated O2s. You'll have to wire up for that.
Advanced
Joined: Mar 2009
Posts: 90
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I am in the process of a TPI in my 74 also, wireing is no problem. How you going to do the fuel pump and tach? I was thinking of a frame mounted pump? Return to one of the evaporative emmis ports on the top corner of the tank. Maybe putting a 75 up tach in the original hole. Going to run the original ram horns unless i can pick up some sidepipes. Got 2 tpi set ups with wireing. Good luck.
Holley HP EFI w/TPI
Joined: May 2009
Posts: 553
Likes: 0
From: Kanata ON
I am in the process of a TPI in my 74 also, wireing is no problem. How you going to do the fuel pump and tach? I was thinking of a frame mounted pump? Return to one of the evaporative emmis ports on the top corner of the tank. Maybe putting a 75 up tach in the original hole. Going to run the original ram horns unless i can pick up some sidepipes. Got 2 tpi set ups with wireing. Good luck.
