zz4 able to use mechanical roller?
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Joined: Apr 2009
Posts: 258
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Car: 86 IROC
Engine: 350 ZZ4
Transmission: TKO-600
zz4 able to use mechanical roller?
Is there any issues using a mechanical roller cam / lifters in a ZZ4 crate motor? As far as I know the ZZ4 is the newer 1 piece rear main seal block. I know that Chevy converted from flat tappet hydraulic cams to hydraulic rollers in 87 and know that there is a "conversion" that has to be done to go from a flat tappet to the roller style. Would there be any issues going from the hydraulic roller that is in the zz4 to a mechanical roller? I cant imagine there would be but figured i'd ask. Thanks
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
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Re: zz4 able to use mechanical roller?
All the suppliers of solid roller lifters offer a tall style for the later blocks. For daily street use, I would spend a bit more and run COMP's EndureX version.
Pay attention to the advertised lift versus what your heads are machined for.
Pay attention to the advertised lift versus what your heads are machined for.
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