I've got an opportunity to get a good deal on a complete 1990 Corvette TPI set up including harness and ECM and was wondering how different it is, if any, from the Camaro/Firebird TPI units?

I've got an 84 T/A L69 that I put a 350 in. Can I simply drop the new Vette TPI intake on my car, wire it up (that's really simplifying it I know), and go? My heads are Iron World Sportsman II Heads, would they need to be changed/altered? Anything else need to be changed? Any input would be greatly appreciated. Thanks!

 

Electrically the Vette '727 ECM is a weather proof version of the 730 ECM used in same year 3rd Gen TPI car , it was mounted under the hood instead of inside the car .The Vette wiring is more complicated than the 3rd Gen version

The Vette TPI base needs a external EGR connection from the exhaust manifold if EGR is important to you .

 

Thanks for the reply!

So, going from CC Carb to FI, I know there'd be a lot of wiring I'd have to do. How is it more complicated than the Fbody harness? The gauge wiring seems like it would be pretty strait forward, as would be wiring in the sensors since everything is alread there on the harness, what worries me the most is the fuses I don't have in my fuse block that I'll need to add.

I'm not worried about emissions as it's not checked where I am registered. Time for some more research it seems. Any pointers would be greatly appreciated.

 

In addition to what was mentioned above, there are a few more differences, some matter, some don't. Cosmetically, the Corvette used a different material on the runner tubes that gave a rough-cast appearance that matched the rest of the TPI instead of the smooth tubes that the f-body cars used. The Corvette used an aluminum distributer cover that better matched the plenum than the plastic one used on the f-body cars. Also, the Corvette fuel rail utilized a passenger-side fuel line hookup instead of the driver-side hookup on the f-body. That will make the routing of your fuel lines more difficult in an f-body.

 

Regarding that last bit, since my car is an 84 Carbed car, my fuel lines actually come out on the Passenger side, so that won't be much of a problem. I plan on adapting my hard fuel line to Steel braided lines which will go to the fuel rails.

Can I use my factory large cap HEI or do I need to get an external coil with small cap distributor?


How hard would it be to hook this up so I can use the factory ALDL port on the car? I'd like to be able to read codes like I do now if any pop up.

 

That would be a chassis issue
Vettes had room for the large cap HEI on all TPI
IIRC , the early 3rd Gen cars also had the large cap version

Any TPI wiring you use (Vette or F-Body ) will have provision for the ALDL