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Old 06-01-2001, 02:36 PM   #1
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Join Date: Dec 2000
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Car: 1987 Iroc
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ZZ4 and LT4 cam specs
What are the cam specs and operating ranges on theses cams? Just want to see how they stack up to my cam since they are so common.

Thanks

Chris
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Old 06-01-2001, 02:50 PM   #2
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ZZ4 cam pn#10185071 Hydraulic roller
Lift .47" I, .510" E.
Duration @ .050:208º I, .221º E.

LT4 HOT cam pn#24502586 279/287; duration at .050" tappet lift (intake/exhaust) is 218/228 1.6 rocker ratio (intake/exhaust) is 525/525. Valve lash is zero/zero and lobe centerline is 112 degrees.

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1991 Z28 ZZ4 with LPE superram base, SLP runners, LPE 58mm T-body,Random Technology ramair,TES headers,24#svo injectors,and just about every other bolt on that there is. Just got a ZEX nitrous kit!
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Old 06-01-2001, 03:09 PM   #3
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Join Date: Dec 2000
Location: NC
Posts: 943
Car: 1987 Iroc
Engine: 355TPI and a Ysi vortech
Transmission: WC built T5
Axle/Gears: 2.73 locker for now(10 bolt)

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Thanks


Chris

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1986 305 TPI
8.0 @88 in the 1/8
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Old 06-01-2001, 03:09 PM
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Reload this Page ZZ4 and LT4 cam specs
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