My cam shopping story and your thoughts on my cam selection

[gesto]

I previously posted about my <3,000 mile 477 hemi with a worn hyd flat tappet cam lobe. I was thinking of converting to a hyd roller but have decided to go with a good ole solid flat tappet cam. I want to source the cam, lifters and spring kit from the same supplier. I tried Howards and Crower and they could not do that for either a solid flat tappet or hydraulic roller and I didn't hear back from Ray Barton. Nothing bad about any of them. They were all helpful and professional. I searched online but didn't come up with any other viable cam companies other than Comp.

I timed out on the Comp Cams 800 number so I filled out their online questionnaire and they got back to me in a couple of days with their recommendation. It's 250/250 at .050 and .557/540 lift and 108 lobe separation. The power range is 3,000 - 6,200. The kit includes their solid lifters and matching springs. If I buy it I'm sending it off to be broken in on a cam machine before install. I'm going to run a 3,000 - 3,400 converter and trans cooler. The car has 4:10's and no power steering or brakes. The engine is 10.25:1 with stock mopar aluminum heads and stock magnesium crossram.

I don't know the specs on the current cam but the dyno sheet shows a flat torque curve and hp curve from 2,500 all the way to 6,200 and tapering down slightly to 6,500. My hope is the new cam would give me slightly more power across the board, especially compared to the worn cam, and more top end power. I'm going to race the car. I don't mind setting valve lash now and then.

Any thoughts before I order this? Anything you see that i'm missing or screwing up? Thanks!

 

[496 polara]

Maybe give Dwayne Porter @PRHeads a call and see what he recommends. He has forgotten more than I will ever know.

 

[Geoff 2]

I think for a 477 cube engine & sol lifter, & you want more top end, you need slightly more cam, like 254/254 @ 050. I would NOT use new lifters. Try & find some factory lifters & have them re-faced. Early 273, Poly or Slant 6 lifters maybe suitable.

 

[gesto]

Maybe give Dwayne Porter @PRHeads a call and see what he recommends. He has forgotten more than I will ever know.

Thanks! I left him a vm.

 

[gesto]

I think for a 477 cube engine & sol lifter, & you want more top end, you need slightly more cam, like 254/254 @ 050. I would NOT use new lifters. Try & find some factory lifters & have them re-faced. Early 273, Poly or Slant 6 lifters maybe suitable.

I am thinking the same on the cam size now that I've slept on it. It does seem a little small. But thanks for the lifter advise. I'll do some reading on it.

 

[earlymopar]

If you go with Howards, I suggest their EDM solid lifters. An obvious choice for solid lifter camshafts.

 

[72redbird]

You could also give the guys at Bullett Cams a call. They are great to deal with and I have never had a bad experience with them. let them know what you are building and what your wanting to do and they can steer you in the right direction with cam selection.