I have a 91 Z28 with a 305 tpi, auto tranny. I am wanting to install a T5 from a donor car (92 RS 305 tbi). What wiring modifications and/or ECM will I have to make?

Thanks in advance.

 

As someone who has a 91z swapped to a t5 from a previous owner, all I can say is please for the love of everything that is holy don't butcher the factory harness

 

You will the chip (prom) from a manual car.

 

I also have had this done. My car has a fast brand chip in it but I have no way to tell if its for a auto or manual. Hopefully since your starting with a unmolested car youll have good luck.

 

Does it have to be from a tpi or can it be from a tbi or does it matter?

 

If you have tpi then you need a tpi chip, if you have done a trans swap to a manual and you have a 350, then u will need a custom chip or your car will not run right.

 

I did the swap and for safety, wire up your neutral safety switch wires from the auto shifter to the clutch pedal push down to start safety switch. You could bi-pass this by connecting the wires together, but I don't recommend it.

If your cruise control still works, make sure you keep and transfer all of the switches and small parts needed when you make the swap.

 

There are major differences between the correct custom 350 manual chip and a stock 350 auto chip.

 

I have a ? what are the major differences? I have a 91 z28 350 tpi with a swapped t5 and on deceleration it smells a bit rich and idle is a bit off

 

I just got my TPI running and have a t5 swap I did as well. The donor car was a v6 (13 spline input). I got a custom built clutch from McLeod (in Summit). It seems to run fine but my question is does anyone else have a a v6 WC t5 behind a 5.7l TPI engine? Did it hold up well?

 

I sent you a personal message ld91

 

You will LOVE the new found power and Control of a manual TPI car...

When done properly you DO NOT have to butcher the harness I hate to see a hack job on these cars it eats away at my soul!!!!!! I have done roughly 40 5 and 6 speed conversions since 1989 and they all came out clean and factory looking

Biggest words of advice I can give is be patient and don't rush!!!!! Take your time....most of all ask MANY QUESTIONS to those that have done these cars.