minimum compression ratio for ZZ4 cam?
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Joined: Jul 2000
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From: SoCal
minimum compression ratio for ZZ4 cam?
What's the minumum compression ratio for a ZZ4 cam? The cam looks pretty mild on the surface but the lift is on the upper end of the spectrum. Will 9.1:1 work. I will have alum. TFS 23* heads and 9.1:1 CR for my 350.
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1985 Z-28 305 TPI
221,000+ mi., Original Eng.
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1985 Z-28 305 TPI
221,000+ mi., Original Eng.
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
9.1:1 will work fine with it. 9.5:1 will work even better. I had 10.3:1 in mine. 
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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
------------------
West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
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