I do not have it running yet so I have no comment on how it works. I have stock heads with 1.88 intake valve, mild portwork and egge 10.5 pistons ($$) using thin mopar headgaskets .028.
Comp Cam 20-233-4
Here is the specs for the solid cam I picked out for my 273 Commando:
COMP Cams Xtreme Energy Camshafts
Summit Racing Part Number CCA-20-233-4
UPC 036584079996
Cam Style Mechanical flat tappet
Basic Operating RPM Range 2,000-6,000
Intake Duration at 050 inch Lift 230
Exhaust Duration at 050 inch Lift 236
Duration at 050 inch Lift 230 int./236 exh.
Advertised Intake Duration 268
Advertised Exhaust Duration 274
Advertised Duration 268 int./274 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.488 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.501 in.
Valve Lift with Factory Rocker Arm Ratio 0.488 int./0.501 exh.
Lobe Separation (degrees) 110
Intake Valve Lash 0.016 in.
Exhaust Valve Lash 0.018 in.
Computer-Controlled Compatible No
Grind Number CRS XS268S10
Valve Springs Required Yes
