LS1 injectors in TPI???

[88camaroproject]

can i put the stock ls1 injectors into a tpi setup and it will all work and fit right? thanks-Tom

[Morley]

You sure can. I have 2 TPI cars running LS1 injectors now. The only thing is that at 43.5psi those injectors are 25#/hr. But for me that isn't a problem since I burn my own custom chips

[88camaroproject]

so i would have to get it tuned if i got them

[Morley]

Originally Posted by 88camaroproject

so i would have to get it tuned if i got them

Yes! Especially if you are running the 400 sbc in your sig. You should already be running a custom chip with the 400 and cam.

[88camaroproject]

well im actually working on another 85 vette and the injectors ar about to take a shit, (183000 miles) and i saw the ls1 low mileage tako offs on tgo for 50 bucks and was thinking about buying them for the mostly stock vette. and yeah my sigs old, gotta change it. im carbed now

[Morley]

Originally Posted by 88camaroproject

well im actually working on another 85 vette and the injectors ar about to take a shit, (183000 miles) and i saw the ls1 low mileage tako offs on tgo for 50 bucks and was thinking about buying them for the mostly stock vette. and yeah my sigs old, gotta change it. im carbed now

In that case, no, you won't need to reprogram the ECM for the new injectors. In 1985 the Corvette used 24# injectors and the LS1's are 25#. not enough of a difference to affect it. Also, the 85 Vette used the 870 ECM, 1985 TPI's were the only ones to use the 870 along with the MAS module. The 870 is a very different ECM than the later ones (86-92 TPI), the programming isn't as easy as the later ones and there are things you can't do with them because a lot of the programming is hardwired onto the ECM's main board.