I'm getting some cam ideas and i feel bad bothering Mark (Cutlassefi) constantly as my build keeps changing. I plan on buying one from him but i thought i'd ask opinions on here about some options also. My block is in the shop but about 2 months out. My edelbrock heads are being ported and matched to a performer intake right now and i want to keep my ram air so i will be sticking with a perfomer. It will have a stroker kit making my engine 496 cubes with 10:1 compression. Headers, 2.5" exhaust, electronic ignition, 1.6 rockers, 3:50 rearend. Automatic with a rebuilt turbo 400. I'll probably get a carb from Mark also along the line of 825 cfm. So far Mark recommended a 565 lift and a 112 lobe for my power breaks. I'm not building a 10 second race car, but i would like a 12 second street car? At .50 duration, what are you guys thoughts on duration looking at my build? 228/232 236/240 or 241/245

 

no less than 236/240 with those cubes , I would do the bigger one 241/245 if it doesnt have AC

 

No a/c. Would i lower the power band down a little with the middle one? I know ill need a stall no matter what

 

Yes the 236 will be bit earlier and milder, I would think just a mild 12" 2200-2500 would be fine if your just driving it. I would imagine your peak power will be done as low as 5000 max 5500 with that intake and cubes

 

agree i have 236/240 roller cam. Ported r_ heads and ported w30 intake stock ext. Manifolds . Idk what that gains but it's quicker than 2 friends built stroked 445s

 

I see no issues coming out to the forum for additional insight to those who are track runners and others that are running similar builds.
But...
I'm sure Mark doesn't feel as thou your bothering him with questions. Marks reviews here on CO are awesome.
He doesn't display any traits such as.. I built it properly it is your problem if you can't set it up to run properly, or your gear and converter are not up to spec with the engine build you ask for.
He makes sure you will be a happy customer, covering all that is needed to optimise your build.
I've read that he drove to a members home to assist with an EFI tune, didn't leave until the member was more than happy with the results of the programmed tune.
I think your in good hands with Mark, I'm basing the above on what I have read in Cutlassefi's posts.
All the best with your build!
Eric

 

Hey guys, i'll hopefully have my block back in the next couple weeks so i'm looking at possibly going roller camshaft. Can i ask what cams Mark has recommended for your roller setups? I had a erson hiflow1 flat tappet cam in it before and it seemed to do fine with power brakes with a 110 lobe. Would a 109 be too iffy for power brakes? There is a Howards roller that i like the specs on. Curious to similar ones Mark recommends as id prefer to go with him. Style: Hydraulic roller tappet Basic Operating RPM Range: 2,000-5,400
Intake Duration at 050 inch Lift: 235
Exhaust Duration at 050 inch Lift: 243
Duration at 050 inch Lift: 235 int./243 exh.
Advertised Intake Duration: 288
Advertised Exhaust Duration: 296
Advertised Duration: 288 int./296 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.565 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.565 in.
Valve Lift with Factory Rocker Arm Ratio: 0.565 int./0.565 exh.
Lobe Separation (degrees): 109