Camshaft timing help

[jim_howard_pdx]

I am rebuilding my .30 over 351 windsor this week. I have 10/1 compression. Trick Flow Twisted Wedge heads ported to felpro gasket 1262 which is 1 5/16 wide and 2 1/8 inches tall. THIS IS BIG GUYS! I also have an Edelbrock RPM dual plane intake also port matched with modifications to match the air gap model plenum.

I have been running a basically warmed over 3/4 camshaft on this engine. Advertised duration is 278 degrees at .475 lift on the intake, and 288 degrees at .495 lift. 112 degree centerline, and 40 degrees of overlap.

Does anyone recommend I retard the cam 4 degrees to pick up some upper RPM power?

I have been running the cam straight up and it has been great all around. Excellent off idle and acceptable top end.

Straight up it has quartered at 13.7 seconds and 104 mph with 3.25 gears and a C4 Auto running about 1600-1800 stall.

If anyone out there is retarding their cam, what has it done to your low RPM?

Let me know your results NOT YOUR OPINIONS. This is not bench racing time.....This is rubber meets the road time.