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Old 05-21-2011, 11:44 PM
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roller cam sbc

Im wanting to upgrade my 30 over 327 from a flat tappet cam to a roller cam.. I found this one from comp cams that has the rpm power range that my 327 is built for with my coverter, gears and tire size.. what your your thoughts on this cam for whom has used this one.http://www.jegs.com/i/Comp-Cams/249/...rentProductId=

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Old 05-22-2011, 12:06 AM
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Cam advertised 'Operating Ranges' are for 350ci engines, so with a 327ci engine this range would be several hundred rpm higher.
I'm not a fan of the Thumpers, there are better choices which will make more power & sound just as good.
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Old 05-22-2011, 12:21 AM
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thanks for the opinon, just wanted some thoughts on the this particular cam, I found one from lunati that may work as well, Im looking for the rpm power band to be 2800-6500 range.. any ideas i welcome them for choices
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Old 05-22-2011, 12:34 AM
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Quote:
Originally Posted by 67-4-fun
thanks for the opinon, just wanted some thoughts on the this particular cam, I found one from lunati that may work as well, Im looking for the rpm power band to be 2800-6500 range.. any ideas i welcome them for choices
put a real cam in it Comp CS 274XR-10 (12-770-8) or CS 280XR-10 (12-771-8) Add a "K" prefix for the complete kit.

Lunati has similar Voodoo mechanical street rollers.

More power and torque + more rpm.
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Old 05-22-2011, 12:55 AM
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thanks for the ideas, im going to go with a hydraulic roller most likely, this cam from Lunati is one I was looking at or the one thats one step below it http://www.lunatipower.com/Product.aspx?id=1990&gid=289

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Old 05-22-2011, 01:01 AM
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would it be best to run a rev kit as well???
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Old 05-22-2011, 01:52 AM
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I'd go with a Solid Roller for a high winding 327.
Everyone makes a big deal out of periodic Valve adjustment, which is at most Bi yearly on an often used vehicle.

Anti-Pump up Roller Lifters & Rev Kit with the Hyd. roller Cam for upper rpms.
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Old 05-22-2011, 09:20 AM
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i guess i was mostly worried about street use with a solid roller, I thought solid rollers were not good for the street but i may have been misinformed..
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Old 05-22-2011, 12:00 PM
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I've run three different Lunati solid rollers one off the shelf, two custom grinds, in my blower car for years with no problems, with Isky RedZone lifters and a rev kit. Isky has a better roller lifter now without needles to worry about.

Like SSedan says, the maintenance isn't what some seem to think, and who doesn't like the sound of a healthy solid cam?! Maybe grandma on the way to 7-11...
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Old 05-22-2011, 01:24 PM
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These Comp extreme solid street rollers use reletively modest spring pressure and have reletively modest and very stable cam lobe lift rates.
Do not compare to a radical race roller set up that uses killer triple springs.

These are easy on the lifters. Use the right springs. valve lash is done cold twice a year.

I have a few of these setups in the field now with no trouble with standard comps solid roller lifters.
Periodic lifter inspection is warranted, just like you would inspect the roller bearing in your drive shaft U joints for any wear and change them as required.

The valve lash stays very stable. If it does change then thats a clue. find out why. Do not be afraid of these "street roller" cams.
They are not race rollers. Crane, Isky and Lunati have similar setups.
None require killer springs but need more than a flat tappet cam uses.

Set the valve lash cold at .002" less then the cam card setting and forget it for 6 months.
These cams will outperform any hyd roller. They are not noisey at idle.
You have to really listen to tell its a solid cam.

use quality roller rockers like Scorpion.

Call Comp cams for tech advice. The comp rev kit is a nice addition too.
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Old 05-22-2011, 09:14 PM
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thank you very much for all the advice!! I was not to concerned to much about adjusting the valve lash much with solid lifter, just heard more that a solid roller was hell on lifters for street use but probably just misinformed.. it seems tho a solid roller cam has less to buy for anyway as hyd lifters need more care and parts it seems to keep the lifter from coming off the lobe at higher rpm.. adjusting valve lash two or three times or more if i have too i have no problem with, just part of regular maintence.. Im using Erson aluminum roller rockers now just need to upgrade to a roller cam..

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Old 08-04-2011, 11:11 AM
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i run crower hippos lifters on the xr280 solid roller, the solid will spank and i mean spank the hydraulic on that 327, with the afr 180 this cam runs wild about 35-7500 rpm and sounds really nice too suits up nice with the rpm airgap with a 1 inch spacer too even at those rpm ranges
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