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Scooter · 09-02-2003, 10:42 AM

Wow! Thanks for all the replies!

I guess I should give a few more details:

The car is a daily driver - not a drag car.

The motor is a 1966 4v 289 (not HiPo) w/ a Performer intake and Holley 600. Very mild street/towing cam (pretty close to stock).

My Windsor heads are 1969 C9OE gasket matched porting and new Motorsport valves/springs installed.

Switching to the 351 heads would drop my compression from it's current 10:1 to 9.2:1, but would increase flow. I wonder if the increase in flow would even be felt on the street? I suppose the loss in compression would cancel out any gains in flow.

Aargh....what to do?

-Don

09-02-2003, 10:42 AM	#9 (permalink)
Scooter Registered User Join Date: Aug 2003 Posts: 13	1966 289...stock heads or 351W heads? Wow! Thanks for all the replies! I guess I should give a few more details: The car is a daily driver - not a drag car. The motor is a 1966 4v 289 (not HiPo) w/ a Performer intake and Holley 600. Very mild street/towing cam (pretty close to stock). My Windsor heads are 1969 C9OE gasket matched porting and new Motorsport valves/springs installed. Switching to the 351 heads would drop my compression from it's current 10:1 to 9.2:1, but would increase flow. I wonder if the increase in flow would even be felt on the street? I suppose the loss in compression would cancel out any gains in flow. Aargh....what to do? -Don