73 Duster build named Fred

Nice, your peak torque will probably move up to

-Boosted- said

Hmm.... maybe this one.

Basic Operating RPM Range:
4,500-7,500
Duration at 050 inch Lift:
269 int./276 exh.
Advertised Duration:
302 int./309 exh.
Valve Lift with 1.5 Rocker Arm Ratio:
0.654 int./0.655 exh.
Lobe Separation (degrees):
106

Click to expand...

I like the 1st one you put up.
You are at 254 right now?
This one is on the verge...if you can wait until tonight after I get off work I can do some math and tell you your optimal duration.
I assume that this cam will raise peak torque up about 800 rpm.