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Old 07-26-2009, 05:42 AM
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BBC Hyd Roller Cam Kit

Hello everyone,

I have an opportunity to buy a used retro fit hyd comp cam kit: intake-.542/242 , exh-.581/254 and 112 sep, comes with hyd roller lifters and std. length 454 push rods. The seller says that it is in Mint condition.

I am building a Mark IV BBC 454(bored .030 over) street/strip application
I have so far:
KB Hyp. Pistons, Eagle H beam Rods, Eagle Forged 4340 Crank
I do not have heads yet, so I have a couple questions,1) Is it wise to buy a cam kit used or should I just buy new?
2) Is this cam a good choice for my setup?

any input is great

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Old 07-26-2009, 08:49 AM
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Thanks for the Input on that F-Bird, So your saying I'd be better off going with a Mechanical Roller Cam kit. I was looking at them just now, and looks like the kits ARE decently priced compared to the hyd rollers. And I don't think I'd have any problems with the maint.
Is the Mech roller still suitable for street driving?
Which name Cams would you recommend? Comp? Lunati? Crane? etc.?

What kind of specs would you recommend for a street driver car , with possible occasion to the strip? I also like the lumpy idle, would that have to do with the lobe separation?
first engine build for me so everyone's input is very helpful

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Old 07-26-2009, 02:56 PM
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I use a custom ground solid roller cam in my 99.9 % street driven 468 big block,heres the specs;
Duration @ 0.050:243/249 int/ex
Lift:.668 in & ex
112 degrees lobe seperation angle
This has a real nice sound at idle,and works up to 6500 rpm.Its got a nice torque curve,517 ft/lbs @ 3500 rpm,440 @ 6500,with a max of 520 @ 4200 rpm.There is enough vacuum for a couple of pumps of the brake pedal,but I use a manual tranny,so its no problem for me.Using quality parts will help with valvetrain longevity,the old saying "you get what you pay for",really does apply here.The proper matching valve springs is critical,as is proper installation.Off the shelf Comp roller cores are ground on a cast core,and should be avoided if possible,although they can be custom ordered on a billet core.Crane is no longer in business.The Lunati Voodoo is a good line,maybe one of the better,(best??),off the shelf line of cams.The same gentleman that made my custom cam also designed the Comp & Voodoo cams,with the Voodoo line being his newer design.As for checking lash,I do it once a year,although this is a summer only car,with 4-5000 miles put on it a year.As F-Bird said,be careful of used valve train parts.
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Old 07-26-2009, 08:16 PM
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Check with Howard's Cams/Competition Products.
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