TPI Questions for 73
Thread Starter
Heel & Toe
Joined: May 2011
Posts: 18
Likes: 0
TPI Questions for 73
I have a 73 350 L48 convertible that I'm considering converting it to a fuel injection car. Looking through the many options I'm considering the TPI units. I like the looks and for my stock low powered engine I think it would mate up well. My biggest concern is hood clearance. Does anyone know if the TPI unit will fit under my stock hood? Also I think I read somewhere about a weather pack for the TPI ecu. Where would I find one of those?
Thank you for your help.
Thank you for your help.
Le Mans Master
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
Yes it fits under stock hood i had tpi before i swapped to a ls1 ,very dependable plenty of low end torque.as far as weatherpack i had my ecu inside under dash.Ive git pictures on webshots.com of my old setup.
http://rides.webshots.com/photo/1175...52841409DFmkyh
http://rides.webshots.com/photo/1175...52841409DFmkyh
I have a 73 350 L48 convertible that I'm considering converting it to a fuel injection car. Looking through the many options I'm considering the TPI units. I like the looks and for my stock low powered engine I think it would mate up well. My biggest concern is hood clearance. Does anyone know if the TPI unit will fit under my stock hood? Also I think I read somewhere about a weather pack for the TPI ecu. Where would I find one of those?
Thank you for your help.
Thank you for your help.
Last edited by PatsLs1vette; Jun 9, 2011 at 09:49 AM.
Thread Starter
Heel & Toe
Joined: May 2011
Posts: 18
Likes: 0
Thanks for the info and the picture. I'm trying to squeeze as much mileage and driveability out of this car as possible and just think this mod will help. Was it hard to mount the ecu or run the wires through the firewall?
Yes it fits under stock hood i had tpi before i swapped to a ls1 ,very dependable plenty of low end torque.as far as weatherpack i had my ecu inside under dash.Ive git pictures on webshots.com of my old setup.
http://rides.webshots.com/photo/1175...52841409DFmkyh
http://rides.webshots.com/photo/1175...52841409DFmkyh
Le Mans Master
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
If you look in the one picture you can c where i went in firewall then turn 90 degrees down through wiper cowl area to just over heater box.Not much more wire to go any farther.I thought it was a cleaner look.
Thread Starter
Heel & Toe
Joined: May 2011
Posts: 18
Likes: 0
Ok I thought of two more questions... First can you use the stock accessories such as AC and brackets with this manifold in place and can you tell me more about your cold air induction kit? Did you make it or did you buy it from somewhere?
Le Mans Master
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
I used the balancer, alternator, waterpump pulley from the 87 trans am and power steering pump from the 73 .I had a/ c disconnected.The cold air idea i got from 70ls1 jeff, we cut the upper rad support and ran a stock c5 corvette air bridge through it then turned down knto a vortec conical air filter behind one of the grills.
Le Mans Master
Joined: Mar 2000
Posts: 8,950
Likes: 4
From: Lafayette LA
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Le Mans Master
Joined: Mar 2000
Posts: 8,950
Likes: 4
From: Lafayette LA
While that is true and the same ECM was used in various vehicles with different engines, you need the memcal (chip) from a TPI car. The correct chip is hard to find and expensive when you do. GM doesn't sell them anymore. Aftermarket performance chips won't work either, as they are all piggy-back designs now. That means you have to plug you OEM chip into the performance chip and then plug them both into the ECM.
