65-85 under.

[442OLDS]

Originally Posted by Paul Precht

Would you then be in favor of running a manifold from an Olds that came on late 50s engines along with an AFB that flows 575 cfm in place of your QJ that flows 800 cfm. Would you give up the valve to piston clearance and long stroke that allows you so much more cam than the 426 SW can run.

So the combo just got horsepower and is still rated 70 horsepower below the factory rating.The Oldsmobile driver just "needs to work on the car".
BTW,I don't get the 800.And it was checked at St Louis by tech.

Gotcha.

[Paul Precht]

Originally Posted by 442OLDS

So the combo just got horsepower and is still rated 70 horsepower below the factory rating.The Oldsmobile driver just "needs to work on the car".
BTW,I don't get the 800.And it was checked at St Louis by tech.

Gotcha.

They bring a flow bench to tear down, never saw that.