If I have to overhaul my 350 I'm planning on putting a different motor in for the summer while my 350 is getting overhauled. So, what is a stock 400 Pontiac motor out of a 68 Bonneville worth? The motor is stock 8:1 or 9:1 motor. The guy told me that the motor ran perfect before he upgraded to a 400 HO motor out of a Bird.
