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

zz9 cam?

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Old Mar 30, 2002 | 02:14 AM
  #1  
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Default zz9 cam?

Any one runnin a zz9 cam from TPIS? If so, what are your results?
Thanks,Will
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Old Mar 30, 2002 | 06:34 AM
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Default Re: zz9 cam? (flynhi)

TPIS "Insider Hints" shows a 45hp gain and an up shift of 500rpm of the hp peak over a GM LT-1 cam.
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Old Mar 30, 2002 | 10:45 AM
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Default Re: zz9 cam? (flynhi)

i have in my 92 and its great nice power and torque it came with the car so
i have no stock comparison to tell you about. i have not driven a stock Lt1 so is hard to tell i did drive a 91 L98 and anemic compare to my car
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Old Mar 30, 2002 | 03:58 PM
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Default Re: zz9 cam? (cesar)

ZZ9s are good for High HP numbers, you sacrifice just a bit of torque down low and the idle can lope a bit so some people have some city drivability issues.
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Old Mar 30, 2002 | 05:40 PM
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Default Re: zz9 cam? (flynhi)

11.98 at 117MPH in my 350 LT-1. Idled close to stock. Good torque down low and still had legs at 6200RPM's. Alot of guys seem to doubt the performance of this cam but the guys that get real serious with this cam seem to do well.
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Old Mar 30, 2002 | 10:48 PM
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Default Re: zz9 cam? (flynhi)

The ZZ9 is a good cam but I dont think it is worth $380 from TPIS. For half that price you can get the GMPP ZZ4 cam, the GMPP LT4 HOT cam, or the GMPP 845 cam, all with similar cam specs and will make at least the same power.
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Old Mar 31, 2002 | 02:11 AM
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Default Re: zz9 cam? (Kevin91Z)

I agree. For that price I bought the Hot Cam and almost have enough for my MSD Digital 6.
:seeya
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Old Apr 3, 2002 | 06:31 PM
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Default Re: zz9 cam? (vetsvette)

I am thinking about the cam for my 91. Questions:

how much HP will it give me?
how much will it knock off my ET?
how hard is it to install? Does the motor need to come out?
Which cam is the best for my year L-98?

Mods: gutted pre-cats, no main-cat, dynomax turbos, AFPR, No-frisbee, K&N Open lid, cut-back plugs, 3:07 rear-end, TB Bypass, Custom burned chip.

best ET- 13.7

Future mods:

Ordered this week- March 3 pulley underdrive kit
Going to port and siamese the runners and plenum this weekend.

CAM? -depends on your answers!!
TPIS or Hooker Headers- later this year
TPIS Mini-RAM??? Much later this year

Thanks guys!

My goal is to have a 12.7 daily driver without pulling out the motor or heads- and hopefully no NITRO!!!!
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Old Apr 4, 2002 | 02:58 AM
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Default Re: zz9 cam? (GusBustamanteJr)

I just took mine out this past weekend and installed a custom ground CompCams.

I had my ZZ9 checked on a computerized cam checker at Dennis Wells' Racing and it came up short on intake duration by 3.8 degrees and 1/2 degree on the exhaust. It's a retro-fit variety for early non-roller blocks.

I question the quality control.

If anyone's interested I can email them the complete computer printout.

I had mine for sale, but a guy was supposed to be sending me the money; haven't gotten it yet.

Jake


[Modified by JAKE, 12:59 AM 4/4/2002]
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