I have and 87 GTA with TPI and I want to supercharge it, I was looking at Prochrager cause they seem to be the best but they claim that the kit will only work on a 88 and up TPI. I was wondering if anyone knows the differences between a 87 and 88, externally that would cause that. I need some advice on what to do here. Thanks in advance

 

first thing first does your engine use a v belt or serpintine?if it has the v belt you have to change over

 

im not sure its a 5 speed manual with ac does that help

 

I believe the only reason you can't use it is your accessory setup. Change over to a serpentine setup and you're good to go.

 

how much does it cost to change over

 

you could try your local gm dealer or a salvage yard like third gen resourse or hawks e-mail either one they have been helpful to me should have what you need

 

just post in the for sale section, wanted tuned port surpentine setup, or PM wtg3575 , i can almost guarantee he will have one...

 

what kind of different parts does it entail?

 

just the pulleys and brackets along with the belt tension this move your a/c & alt to switch sides when you get a chance checkout willie's home page i believe he has an 86 or 87 and had to do the samething

 

and the p/s pump and new water pump and i got the a/c delete and deleted the smog.