ZZ9 vs GM hotcam
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Junior Member
Joined: May 2003
Posts: 36
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From: So. Calif
Car: 88 IROC, 07 Corvette, 05 Tundra
Engine: V eights
ZZ9 vs GM hotcam
whats up guys? I ordered the Scoggin-Dickey Vortec TPI motor and was wondering if I should keep the GM hotcam thats in it or go with the TPIS ZZ9 cam? The ZZ9 is a 212/226 vs the GM 218/228.
Senior Member
Joined: Sep 2000
Posts: 785
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From: St. John's, NL, Canada
Car: 1988 Trans Am GTA
Engine: 383
Transmission: 700R4
Well right off the bat the hotcam is a bigger cam. It has a bigger duration. What is the lift of the zz9? I know the hotcam is .525/.525. And if the zz9 is smaller than that, than why change to a smaller cam?? Keep the hotcam if all the numbers are smaller.
Junior Member
Joined: Sep 2004
Posts: 20
Likes: 0
From: Illinois
Car: 88' Corvette, 94' Camry XLE, 83' Z28
Engine: 350 TPI
Transmission: 700R4
ZZ9 specs
advertised duration: 282 intake/287 exhaust
duration at .050: 212 intake/226 exhaust
gross lift: .483 intake/.520 exhaust
lobe separation: 112
Those that SD motor come with 1.6 roller rockers? A little more lift never hurts.
advertised duration: 282 intake/287 exhaust
duration at .050: 212 intake/226 exhaust
gross lift: .483 intake/.520 exhaust
lobe separation: 112
Those that SD motor come with 1.6 roller rockers? A little more lift never hurts.
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1988iroc350tpi
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Aug 14, 2015 07:52 PM
