Originally Posted by XXSTEVEO66
By "not made for boost" does that mean no forged pistons?...
And if I remember correctly dont 89 5.0's have forged pistons?...not sure Ive been a GM guy up untill 2yrs ago!
To run much boost on the engine you will need a forged rotating assembly (pistons, rods, & crankshaft) you will also want to go with a 4 bolt main block (boss, dart, svo, etc.) which is much stronger than the stock 5.0 block.