hey guys, i want to convert my car to TPI, i can get an 89 305 MAF setup, my 305 is modified, block bored .20 over, world product s/r torquer 305 heads, crane powermax 2032 cam, headers, 3" cat back and misc stuff, will the maf setup be fine with these modifications? aside from turning vats off in the chip, will the motor run with the 305 19/lb injectors? also i know i need to change the fuel lines, but i'm gonna run an external fuel pump, how about the VSS, i have the one that is behind the speedometer (1986) any other things you can think of?

oh yeah, i'm gonna be installing 3.73 gears, this car is only gonna be driven in the summer, and basically to get up and go, i dont really care about top speed, how much hp do you think were talking with the TPI on top?

thanx guys

 

yes, assuming it is all in proper working condition.
yes, again assuming they are working correctly and are clean.
I believe That should work fine, I don't think there is a change in them.
Unless you do some modifications to the TPI you won't likely be seeing much, if any more peak horsepower than with your carbed setup, but the peak will likely occur at a lower RPM and you should have more horsepower and much more torque at all RPMs under peak.
TPIs are versatile and easily modified though and can be easily modified. There are many aftermarket parts available to suit many different needs.

I almost forgot this. If you use the stock GM production TPI manifold base from an '89 F body the center four manifold to head mounting bolts(and their holes) are at a more vertical angle than your center four bolt holes in your heads. You will need to elongate the holes the the intake, and flatten the area a little where the head of the bolt will rest. Or if you use an aftermarket manifold base it will have this done already. You also can use an early F body base, or any year Y body (Vette) base to get the right bolt holes without modifying them.

 

hey thanks for the info, i have world product s/r torquer heads, with the 87+ bolt style so i'm all set on that, i just dont know what i should do now, my cam rpms are 2000-5500 rpms and i want to put 3.73 gears in i have a 5 speed, but when i race i usually shift at 4500-5500 rpms

 

I'm sure that they have the "new" style center bolt valve cover design, but they may not have the new style intake bolt design. You might want to double check on that unless you already know that it does.
A cam with that RPM range should work well with a long runner length intake like the TPI. I would still shift at 4500-5500 RPM. You will just have less time to rest between shifts, .