Requirements for zz4 cam swap
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Joined: Apr 2011
Posts: 5
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From: Tampa Bay
Car: '89 GTA
Engine: L98
Transmission: 700r4
Axle/Gears: 3.27
Requirements for zz4 cam swap
I have a zz4 cam i want to install into my l98 with iron heads. I'm wondering what valve springs and what else I am going to need. I don't want to do any machining to the heads and I don't want to spend too much. Will the LT4 hotcam springs fit? I was thinking about these http://paceperformance.com/i-6255251...-diameter.html 
Joined: Dec 2008
Posts: 2,540
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From: Norwalk, CA
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: Requirements for zz4 cam swap
http://paceperformance.com/i-5146515...-525-lift.html
i think your better off buying this since u gonna need the retainers keepers also
i think your better off buying this since u gonna need the retainers keepers also
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Re: Requirements for zz4 cam swap
To do it without cutting the guide bosses, you definitely need offset locks, +0.050", or beehive springs to clear that 0.510" exhaust lift. Maybe both?
You also need to check if your rocker slots are long enough.
You also need to check if your rocker slots are long enough.
Thread Starter
Junior Member
Joined: Apr 2011
Posts: 5
Likes: 0
From: Tampa Bay
Car: '89 GTA
Engine: L98
Transmission: 700r4
Axle/Gears: 3.27
Re: Requirements for zz4 cam swap
Thanks SiCkRs and ronnjonn! Will I need to replace my rockers, or can I keep the stock rockers?
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junkcltr
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Aug 2, 2019 11:12 PM
