my cam is a 268 duration 215@.050 lift with 1.5 rockers .490 lift 110 lsa .i was thinking of going with a howards 180-325-10 ,180-325-08,180-255-10 .the specs on these cams are usually based on 350 cid ,so i was wondering if anyone of these would be a lot better than what i have .if a cam requires a 2500 stall in a 350 will it still need that much stall in a 383 ****Summit Racing Part Number HRS-180325-08
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 2,000-5,800
Intake Duration at 050 inch Lift 225
Exhaust Duration at 050 inch Lift 233
Duration at 050 inch Lift 225 int./233 exh.
Advertised Intake Duration 278
Advertised Exhaust Duration 286
Advertised Duration 278 int./286 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.525 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.530 in.
Valve Lift with Factory Rocker Arm Ratio 0.525 int./0.530 exh.
Lobe Separation (degrees) 108
Camshaft Gear Attachment 3-bolt
***Summit Racing Part Number HRS-180325-10
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 2,200-5,800
Intake Duration at 050 inch Lift 225
Exhaust Duration at 050 inch Lift 233
Duration at 050 inch Lift 225 int./233 exh.
Advertised Intake Duration 278
Advertised Exhaust Duration 286
Advertised Duration 278 int./286 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.525 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.530 in.
Valve Lift with Factory Rocker Arm Ratio 0.525 int./0.530 exh.
Lobe Separation (degrees) 110
***
Summit Racing Part Number HRS-180255-10
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 2,200-5,800
Intake Duration at 050 inch Lift 231
Exhaust Duration at 050 inch Lift 235
Duration at 050 inch Lift 231 int./235 exh.
Advertised Intake Duration 284
Advertised Exhaust Duration 288
Advertised Duration 284 int./288 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.510 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.530 in.
Valve Lift with Factory Rocker Arm Ratio 0.510 int./0.530 exh.
Lobe Separation (degrees) 110