How much effect dose it have on c.i.say 312deg on a 440 with a 11to1 comp motor to a 500c.i. motor with 12to 1 comp.Idle quality and street drivabilty.

A big cam will work in a bigger motor with more squeeze a lot easier. The bigger motor absorbs more of the duration and is able to use it. There is such a thing as to big of a cam for a certain motor. If the motor is small it will need more compression with the bigger cam to work best.

My car has slow 60ft times, which i think is down to the cam being too big, .280@50, 440 with 11-1 comp.
Mike

What are your 60' times?

On the time posted 1.66, which is usual, if i can keep it in one piece this year i think it will go 10's, with a smaller cam maybe mid 10's.
Mike

HI Cab that was 286 at 50 108 center line i put every bit of 8 thousand miles on that cam last year with the 440 and a best of 10.7 at the track.I've had good luck with M.P. cams,I do put a lot of magnets in my engines when I assemble them thougn.This year I wont to go to a roller.I have no experince with them,just trying to get a feel of what will work for my new engine.

Big motors like big cams, I'm sure the new motor will like the cam you have now a lot better than the old motor does. I tried a solid roller in my pump gas low conpression 518 C.I. that was 274@.050 on 106 LSA, the motor didn't like it on the dyno versus the old cam which was a dual pattern solid roller with 260@.050 intake and 266 @.050 0n the exhaust with 108 lsa I didn't run the bigger cam at the track or on the street, I took it out and put the old cam back in, chicken I guess I am putting the bigger cam in a higher compression motor now with better heads, more carburetion and less C.I.(464 C.I.)so it will be interesting to see the results. I will put the details on the motor as soon as I know when it will get dynoed and ask for comment and guesses on the results Lats thing is big motors like big camshafst, I would use the one you have now if it is availble, not in the old motor if the old motor is still together and usuable