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Location:  Main Index » Forum Index » Automotive General » Performance Related » Fast Burn or Trick Flow » Post#2238305
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Username Post: Fast Burn or Trick Flow
gchemist 
Senior Chevytalk Moderator
Posts: 20885
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
 06-17-12 01:24 PM - Post#2238305    
    In response to Mr. Sinister

Upgrade the push rods too!! The stock ZZ4 push rods will bend at high RPMs. Factory RPMs are recommened at no more than 5600 or 5800 RPMs. ZZ4s can make more power with bigger valved heads and cam. Yea, valves are really small. I've considered changing the ZZ4 heads on my truck. I'm curious on what you choose and how they run.
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS

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