Pontiac Head Flow - 197 Casting
 

What intake head flow at 0.425 lift would one expect from a properly prepared legal stocker 197 casting pontiac head. Engine is 455/335 hp combo with all the normal stocker stuff.

I understand that peak flow is not the wole equation but I assume you need a certain amount of peak flow to develop a certain amount of peak hp.

PM me if you do not wish to post. All information would be much appreciated.

Scott Underhill.

Re: Pontiac Head Flow - 197 Casting
 

My heads flowed 230 cfm at 28" max lift. On the dyno I made a peak power of 470 hp at 5250.

Just wondering if my head flow is holding the peak power back?

Re: Pontiac Head Flow - 197 Casting
 

How was the torque curve?

Re: Pontiac Head Flow - 197 Casting
 

Torque curve is fairly flat, 510ft-lbs at 4500 to 470 ft-lbs at peak power. Converter stall speed is 4500.