Anyone running a roller cammed BB?

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May 20, 2003 | 08:02 PM

bbeck

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From: Ashley Michigan

Roller cammed BB

I'm interested in a roller cam for my 454, as I think my motor just ate another cam and lifters set. I will find out when I have time to tear it down, if it is the cam. But, I'm just looking for good possibilities. I'd like the experience with the roller cam in my 454 before I go and rebuild my 427.

[Modified by bbeck, 8:29 PM 5/20/2003]

May 20, 2003 | 08:32 PM

bbeck

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From: Ashley Michigan

Re: Roller cammed BB (bbeck)

I'm currently running a PowerMax H-296-2
Specifications:
* Advertised duration: 296 intake/306 exhaust
* Duration at .050 in. cam lift: 236 intake/246 exhaust
* Gross valve lift: .553 in. intake/.571 in. exhaust
* Lobe separation: 114 degrees
* Basic rpm range: 3,000 to 6,500
* Fair idle, performance car and marine usage, good mid-range horsepower, minimum 3,000 rpm stall converter
* Cruise rpm: 3,800 to 4,200
* Recommended compression ratio: 10:1 to 11.5:1

[Modified by bbeck, 8:47 PM 5/20/2003]

May 20, 2003 | 08:35 PM

sventy2

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From: Rockford IL

Re: Anyone running a roller cammed BB? (bbeck)

I've run a roller cam in a couple small blocks and loved them. I've now moved up to Big Blocks and I'm currently building a 427. I'm going with comp cams #11-460-8 hyd. roller. The duration at .050 is 244/244 with .612 lift (intake and exhaust) and 110 degree lobe center. Comp cams description of it says "street / strip 10:1+ compression, 3000 stall, 4.10 gears, aftermarket intake and headers. Very rough idle"
I only have 3.55 gears but it is going to be bolted up to a 700R4 trans. The cam might be a little big for a daily driver but for perfect for a weekend street/strip car!!! :chevy

May 20, 2003 | 08:53 PM

bbeck

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From: Ashley Michigan

Re: Anyone running a roller cammed BB? (sventy2)

Sounds like it would be about the same as mine now. How's the motor coming together so far? Where did you get it from? $$$ you spend?

May 20, 2003 | 09:07 PM

WA 2 FST

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From: Allen TX

Re: Anyone running a roller cammed BB? (sventy2)

sventy2,

What kind of rev-range are you looking at with that cam? I am getting a custom cam for use with my AFR 305 heads (mine is already a hyd. roller now). I'm concerned with getting something too large that will put the peak HP at too high of an rpm b/c I know hyd. rollers are rpm limited due to their weight. If I was gonna spin it to 7k, I'd opt for a solid valvetrain.

Sorry if this is considered hijacking the thread...not intended, and maybe this will help. The more info, the better!

May 20, 2003 | 09:21 PM

bbeck

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From: Ashley Michigan

Re: Anyone running a roller cammed BB? (WA 2 FST)

I think that I'll go hydraulic roller for the 454 and solids for the 427.

May 20, 2003 | 11:14 PM

ZL1powr

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From: North Port, FL

Re: Roller cammed BB (bbeck)

I am running a comp cams solid roller grind number 288A-R10. Gross lift is .622 intake and exhaust, 244 duration at .050 and 110 lobe seperation. I have been very pleased with this cam for daily street use and ocaisional drag strip duty. I started with a hydraulic roller but had a lot of trouble with valve float and broken valve springs.