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Anyone running Comp Cams 08-501-8 in L98?

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Old 05-18-2017, 04:54 AM   #1
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Anyone running Comp Cams 08-501-8 in L98?

Anyone running Comp Cams 08-501-8 in L98? I have this cam in my 1989 L98 IROC-Z. Right now I am running this cam with ported intake and Magnaflow Dual Cat-back exhaust. This cam really woke up my stock L98. My question is what other Mods can I do that will get me the best bang for the buck. I would like to go with new heads, headers etc. but I don't know what the limitations of the Cam I already have put in are. Anyone have any suggestions on heads, rocker arms or anything else to get some more HP?

Comp Cams 08-501-8
Basic Operating RPM Range: 1,200-5,200
Intake Duration at 050 inch Lift: 212
Exhaust Duration at 050 inch Lift: 218
Duration at 050 inch Lift: 212 int./218 exh.
Advertised Intake Duration: 264
Advertised Exhaust Duration: 269
Advertised Duration: 264 int./269 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.488 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.495 in.
Valve Lift with Factory Rocker Arm Ratio: 0.488 int./0.495 exh.
Lobe Separation (degrees): 112
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Old 05-18-2017, 07:30 AM   #2
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Re: Anyone running Comp Cams 08-501-8 in L98?

It would do better with headers and big tube intake runners or especially a shorter runner intake. Siamesed runners or aftermarket intake manifold
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Old 05-18-2017, 07:48 AM   #3
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Re: Anyone running Comp Cams 08-501-8 in L98?

That's the cam I'm running.

As Orr89RocZ said, it does really well with my short runner Miniram. The advertised 5200 rpm limit seems to be a little conservative since for me the engine pulls hard to at least 6000 rpm. It's a very good street cam with very good street manners... smooth idle, hauls a$$, and gets ~27 mpg highway (with ECM's highway mode dialed in and overdrive + 3.42 axle ratio).
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Old 05-18-2017, 08:55 AM   #4
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Re: Anyone running Comp Cams 08-501-8 in L98?

Currently running that cam on a factory intake and 083 heads. Still has good power. Can't wait to put my ported set up on in and see how much much I am currently missing out on.
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Old 05-18-2017, 10:37 AM   #5
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Re: Anyone running Comp Cams 08-501-8 in L98?

Running it as well, but with a TPI intake and now a SuperRam.
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Old 05-18-2017, 10:45 AM   #6
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Re: Anyone running Comp Cams 08-501-8 in L98?

Don't forget you will need to tune for the cam swap to optimize performance. IMO best being for the buck.
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Old 05-18-2017, 01:25 PM   #7
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Re: Anyone running Comp Cams 08-501-8 in L98?

yeah, should be a very easy cam to tune for. Probably some minor changes to VE/spark and the PE. Though, a WB O2 is highly advisable to tuning the PE.
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Old 05-19-2017, 02:16 AM   #8
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Re: Anyone running Comp Cams 08-501-8 in L98?

I forgot to say that my car is tuned for this cam and I have mildly ported the TPI lower intake as well as the upper plenum and enlarged TPI factory runners.

I guess I should rephrase my question. Would a new set of heads/ rockers, springs be worth investing in already having this CAM installed? Would I see a good increase in HP?
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Old 05-19-2017, 07:01 AM   #9
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Re: Anyone running Comp Cams 08-501-8 in L98?

You would see good hp with heads AND intake mods. Whole system needs to flow. Heads alone will likely only make a few more hp due to limitations in the tpi intake
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