Hey everyone I got a 87 305 tbi truck engine I'm looking to swap into my gf 86 trans am I got a 88 tpi intake, runners, fuel rail, pluemn, an throttle body will all of this bolt directly up to the 87 tbi engine or do I have to change to the tbi harness inorder to use it

 

The TPI hardware will bolt to the '87 TBI engine.

You can repin a TBI harness, but it makes a lot more sense to buy a TPI harness. Usually available in the classifieds on this Board.

 

The 86 trans am already has a tpi 305 in it. It spun a bearing an instead of rebuilding it I'm just putting another 305 in it I already have te tpi harness in the car

 

Okay, I see what you were saying now. The TBI harness stuff was confusing, since you shouldn't need anything of the TBI system itself. I also assumed the '86 didn't currently have TPI.

Yes, the '86 accessories will bolt to the truck longblock, and the '88 TPI base will bolt to the '87 truck heads. However, I'd be inclined to have the '86 heads redone and put them on the '87 shortblock. Better flowing heads, and your existing TPI base will bolt to them. The only advantage the '87 heads have are the centerbolt valve covers.

 

Does the oil pan need to be changed the angle looks alot different it has like a slight angle going down into the oil well pick up unlike the passenger car sbc oil pan that is flat an then has the bottom well

 

You may need to change the oil pan.