cam selection
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cam selection
im going with a carb soon on my 305.
and im looking at these comp cams cam/lifter/spring/misc/timing chain kits
now my question is: if i get one of these that has a higher lift than uh.. i think .480 (l03) dont the springs included in the kit allow me to run a higher lift than the .480?
and im looking at these comp cams cam/lifter/spring/misc/timing chain kits
now my question is: if i get one of these that has a higher lift than uh.. i think .480 (l03) dont the springs included in the kit allow me to run a higher lift than the .480?
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
The springs aren't the only thing determining maximum lift. You also have to worry about the valve guide to retainer clearance.
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Joined: Jul 2003
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From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
Unless you have the heads machined for more lift (milling the guide bosses down).
Another method, not as expensive, are +.050" valve stem locks. I have a set of these currently installed. Retainers with the same function also exist.
But otherwise, yes, .460-.470 is a decent accepted value. Just be sure to dummy it up and rotate the engine by hand a few times first to check clearances.
Another method, not as expensive, are +.050" valve stem locks. I have a set of these currently installed. Retainers with the same function also exist.
But otherwise, yes, .460-.470 is a decent accepted value. Just be sure to dummy it up and rotate the engine by hand a few times first to check clearances.
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