randy331 wrote:I certainly wouldn't buy a different cam at this point. I would use the Crower cam you have, or re-install the 230/236 cam and use that belt drive for what it's for, easy cam position changes. Trial fit all the cams you have and check for valve to piston in full advanced position and full retarded poisition, to see where you can run them, and/spring coil bind/retainer to seal clearance etc. Then run them all in different positions with tight and loose lash and get some data before deciding on a different cam.
I helped a friend with a 355 in a 3000lb nova. 5800 stall 5.43 gear. With a 210cc head and 264/274 duration cam it was making peak hp over 7000 rpm. It ran a 1.349 60'/ 6.37 1/8 @ 105+ /10.11 1/4 @ 130 mph. We tried a professionally ported set of pro1s that CCed 236 and best 60' was 1.395 despite the 45 lbs lighter the car was with the aluminum heads. Stall speed was 300 rpm less with the bigger heads.(5500 now) Optimum shift rpm went way up. it was being shifted at 8000 rpm and probably needed more with the 236cc heads, but with steel valves, stud mount rockers and 5/16 pushrods, I wouldn't go past 8000.
With an automatic car, one of the most important factors in ET is the power in the first few 100 rpm above stall speed. That determines 60' ability and shift recovery in some cases.
You already have a too big of head, don't bandaid it with too big of cam.
monzter wrote:Can you tell me more about the combo you where running Richard, tire size, gears, intake, carb and such, what was the trap speed and how high did you spin it ?
based on your combo and the advices the guys have given me the smaller cam would probably do better in the engine... Is this comp camshaft an old design ?
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