Thanks! So I went on wallace racing's calculator. Cam specs 240/240-120 has an overlap of 0* Anything over that, the overlap will increase I see. Anything under and you go negative overlap. So the bigger the motor the bigger the cam, it will require spinning the blower faster to get to the same boost level. Time to pulley down.
As Matt pointed out, a cam with no splits won't work with this
engine platform as you must compensate for the insufficient exhaust ports of these heads.
A 12* to 15* split in duration is very typical for these heads.
I am not sure what you are looking for, as when your engine rpm is at
5800 rpm at launch, this cam is giving you an ~98% efficiency
regarding potential VE%.
At 7200 rpm, this cam has the potential of delivering ~125%
efficiency regarding VE%. Now take that 125% and multiply it by the density ratio of the blower and everything is good.
What is not good is those cylinder heads, which not only are far to
small for your application, but also are most likely (99% sure) not
flowing what you think they are above 0.600" lift as the depression
generated by the piston moving down is far greater than the 28"
of water depression generated by the flow bench. And if using just
28" of depression is showing issues with those heads, that serves to
tell one that depressions of 40" to 60" will only tend to increase
those problems.
So if we continued to multiply induction variables, as I did within the
paragraph above, at or around 0.600" of lift you would not be
multiplying whole numbers. Instead you would be multiplying by
decimal points, as the mass flow will not be sufficient to continue to
fill the cylinders,when the valve lift is at, or around 0.500".
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Finally; your running a 10.0 Index.
Am I wrong when I state; I think I remember you posting the car ran a 9.2?
Sorry my posts might sound like I am only focusing on the negatives,
but to move forward one must understand what is holding one back..
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Also, for anyone reading this who might have a stock bore and
stroke 376 cid engine, please do not attempt to use this camshaft.
This camshaft, regarding duration values is fine for this 4" stroke
engine operating within the rpm ranges stated above.
Cheers