Solid Roller camshaft selection those of you running a 408 race application - lobe seperation

9secRR said

the more i think about it, the engine is not happy. with 12.5:1 compression, 660 lift roller, 4'' stroke, 320 CFM heads.... this car should be running 9.90's.

wondering if the cam was degreed? what's the timing at?

i still think it needs a different converter to wake the engine up, it's not performing the way it should.

if you have a 727, switch to a 904 as most people say 2-3 tenths faster with a 904. i've never compared the 2 back to back but that's what i have heard.

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I switched from a 727 to a 904 back when I had a stock stroke 360 in the car and didn’t see a thing, was hoping to but didn’t.
I don’t know about 2 or 3 tenths.
I have heard a tenth or 1.5 tenths is common.
Regards the OP’s car, the other thing is, are the heads really as good as people think they are. That would be the thing to me.
I think when the other guy had it, weighed a little over 3200, and it went around 130 mph, or close to it, if memory serves. So I wouldn’t guess anything is off that much. To me, it would be more how good the heads really are as my first place to look. They have been redone, but I have yet to see those heads put up what I would call impressive track numbers they way they come.