TIP Swap - Throttle Cable
Thread Starter
Racer
Joined: Sep 2001
Posts: 352
Likes: 51
From: Austin TX
TIP Swap - Throttle Cable
I'm getting ready to upgrade my GM TBI system to a polished OEM TPI setup. Have almost all the parts gathered, but wondering what others have used for the throttle cable? Searching thru last posts, I have seen references to using a third gen cable, lokar or spectre. Anyone out there that can provide specifics on a good fitting solution?
Would a C4 cable work?
Would a C4 cable work?
Thread Starter
Racer
Joined: Sep 2001
Posts: 352
Likes: 51
From: Austin TX
One less piece to worry about. Now I just need to decide what to do with the fuel lines to adapt the TPI to my existing TBI setup.
Safety Car
Joined: Dec 2012
Posts: 3,817
Likes: 1,727
From: Summerville SC
Not sure if you are aware or not but you will need to change out the fuel pump. The Tbi only puts out somewhere like 12 psi and the tpi needs 35-38. And make sure you have the little clip for the cable where it hooks up to the throttle body.
Thread Starter
Racer
Joined: Sep 2001
Posts: 352
Likes: 51
From: Austin TX
When I setup the TBI, I planned for future upgrades, figuring this would be a stepping stone. For the fuel pump, I installed an AD Delco EP241, the stock pump for the 5.7L TPI applications. Hopefully covered there as it is rated for 50 psi, I think
Good idea on the clip. Will have to dig thru the parts to verify. Want to have everything possible on hand to minimize downtime.
Good idea on the clip. Will have to dig thru the parts to verify. Want to have everything possible on hand to minimize downtime.
Safety Car
Joined: Dec 2012
Posts: 3,817
Likes: 1,727
From: Summerville SC
I put an '86 TPI tpi in my 78, and changed out the trans to a 200r4. My set up is for a Mass Air Flow, not speed density. If you have any questions about any of this, just PM me. Got a great harness set up with every wire labeled. Lots of stuff I went thru that I'd be glad to share. ECU, prom etc. Car runs good, but so far just up and down the driveway. Lots more to do. Good luck.
Thread Starter
Racer
Joined: Sep 2001
Posts: 352
Likes: 51
From: Austin TX
I put an '86 TPI tpi in my 78, and changed out the trans to a 200r4. My set up is for a Mass Air Flow, not speed density. If you have any questions about any of this, just PM me. Got a great harness set up with every wire labeled. Lots of stuff I went thru that I'd be glad to share. ECU, prom etc. Car runs good, but so far just up and down the driveway. Lots more to do. Good luck.
I polished the plenum and runners last year and likely have 90% of the parts. I'm wrestling a bit with moving ahead with the TPI solely because the car is running soooooo well right now!
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