C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Comp Cams 08-450-8

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Old Aug 11, 2007 | 02:48 AM
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Default Comp Cams 08-450-8


Uh, I looked at this cam and I thought the lift shown (0.560) was with 1.6. Turns out, it's with 1.5, so with 1.6 it'll be like 0.597 - 0.600 " lift right? Am I looking at this correctly?
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Old Aug 11, 2007 | 03:15 AM
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1.6 x .3735"(Lobe Lift) = .5976" lift. or just say .598". I was thinking Comp Cams had some "quicker acting" cams than this one too. More like 280*/230* and 6++" lift. That 110* LSA might give some trouble tuneing; most folks here like 112*.


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Old Aug 11, 2007 | 06:03 AM
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That looks like a nice "mild" cam for a miniram. Not sure about the superram. Jer, better to go mild, then having huge tuning issues!
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Old Aug 11, 2007 | 10:06 AM
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What are you doing for heads? Gearing?
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Old Aug 11, 2007 | 10:55 AM
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A buddy of mine has that cam in a 4 speed 69 camaro with AFR heads,. He has complained about a lack of torque. 3.73 gears, I think. I'm not sure about which gearset is in the tranny.

Its a carbed car, so I imagine his tune is not what it could be. I would think some more spark advance down low would help. Car made around 280 rwhp on a mustang dyno a few years back. There should be more in it.

I have a sound clip of it idling, that I can post on monday since its on a network drive that I don't have access to right now.

It sounds pretty good, a bit lumpier than my Comp 503.

I think it would be ok in a 383 SR car with 3.54-3.73 gearing.
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Old Aug 11, 2007 | 11:05 AM
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it's hard for me to fathom only 280rw out of that cam and AFR heads. i'd suggest something is wrong, somewhere.

that lobe is killer. it's an old lobe but still works better than almost anything around those numbers. i think it's probably not well matched to L98 heads and a long-runner intake, though. in an LT1 it would be difficult to beat for a given level of drivability.

-michael
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Old Aug 11, 2007 | 11:27 AM
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It should make quite a bit more power than that. I was there when he made the pulls and also have a video of it around somewhere.

For a frame of reference: LS1 cars were pulling around 300 rwhp, and an LS6 Z06 was around 340 on the same dyno that day.

The heads as far as I'm aware are the older AFR 190s. The carb tuning and ignition timing must be way off. Cam is the retro-fit HR version. 286 Magnum I think.

Last edited by tequilaboy; Aug 11, 2007 at 11:29 AM.
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Old Aug 11, 2007 | 02:54 PM
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As for heads, I'm using the AFR 195 Eliminators and my gearing is 3.33.

I chose this cam over the 219 because I'm gonna have boatloads of torque so I sacrificed some tq for some hp, thus the higher duration. I kept the duration to a usable level by choosing 230 and not going any higher. I believe this cam should work well and give me "the best of both worlds" between hp and tq.
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Old Aug 13, 2007 | 10:41 AM
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Here's that sound clip I promised:

Click here to watch Kents-car
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