Can can buy a TPI for $550 is that a good price for one, it is off a 88GTA i have a 92 formula with a 305 tbi, i am going to change it to TPI. My questions are
1) Is this a good price for a TPI , wiring and computer
2) If i put this on my 305 now can i put it on a 350 at a later time.
Please help me

 

in order 1. yes i would say that is a good price.
2. yes the install to a 350 is the same as a 305
Good luck , THE SHAGGY IROC

------------------
'89 SHAGGY IROC
L98 7r4, all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc.
so much to do , so little money

 

Keep in mind the 88 setup has a 9th injector, and if its off a 350, it has 22lb injectors. It'll make your 305 run too rich. You'll want 19lb injectors off a 305 TPI. If it was me, I'd try to find an 89-92 TPI setup and make it speed density.

------------------
West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

That's not a bad price as long as it has every thing you need for the swap that is a mass air set up make sure it has the mass air sensor they coast 200 or more depending on where you get them you don't want to have to spend that money if you don't have to. Before you do make that change decide on what you may want in the future if you plan on getting a mini ram I would go with a speed density system but if you decide you want to stay with the TPI then you are ok both systems have advantages and disadvantages the mass air set up is a little more forgiving when you make performance mods on your car you don't have to change the chip as much but you are limited to around 750 cfm that is as much as the mass air sensor can be modified to. On the speed density system you will have to change your chip a lot more if you add more mods to your car so if you go that route I would get the stuff to burn your own chips it will save money in the long run with this system you are not so limited to air flow you can stick a 58 mm TB on it and not have the mass air sensor restricting you. There is a lot more out there to consider for both set ups this is just a few of them I may be wrong on the flow rate but I think that tpis said that the flow rate for a mass air sensor was after modifying it. As for the fuel injectors I think you will be fine using the 22 as long as you use a chip for a 350 not a 305 most guy with 350 have went up to 24 what's the difference if you have changed your cam or you are planning on it later you will be alright I would imagine if you are going to the trouble of putting it on your car you are going to port every thing out before you put it on and possibly have done and plan on doing other things like catback, headers , heads and so on.Besides you can throw them some where and get a set of 19lb for know and then you will have them already if you go to a 350.

 

And dont forget about different throttle cables, fuel lines and fuel pump. I plan on doing this swap in the early summer and I have been researching it, and this is what people have been telling me. The best way to do it, is to find a wrecked TPI car or one with a blown motor to use as a donor. Thats what I did and now I know that I have everything.
GOOD LUCK