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01-02-2004 06:57 AM #2
CHR Member
- Join Date
- Dec 2003
- Location
- Festus
- Car Year, Make, Model: 75 GMC C-15
- Posts
- 342
it does increase lift & CAN in crease HP... its trial & error, some people use 1.6 on intake & exhause, some do it just on exhaust...or intake...depends what works.
As I recall your ZZ4 uses self aligning rockers, so keep that in mind if buying rockers.John75 GMC C-15 factory 454, automatic, lowered
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