Glenno108

What is the max cam lift on a standard gen3 better way to find out is ask this way

moeZ28

iTrader: (7)

Are you talking stock valve springs or just as big as you can go in general? Lift has less to do with piston to valve clearance than duration and LSA.

Glenno108

Na not stock valve springs, 135+lbs .625 Mac lift springs I have a 236/242 .612 .612 113 and the springs for it but someone has turned around and said that cam won't fit, not I'm unsure if I wanna put it in now incase have to pull all out again

moeZ28

iTrader: (7)

It would fit stock, unmilled heads but it will be close...those specs look like a RAPTR cam but cut on a 113 LSA...if you have milled your heads any, i would say you would need to flycut your pistons to make it fit.

PREDATOR-Z

lift has nothing to do with PTVC.
Think about it; when does max lift occur in the stroke?

Glenno108

The intake valve closes long before TDC I was just unsure about the exhaust valve just thinking that must close alot closer to TDC

studderin

iTrader: (28)

its not at max lift as said.
most of the time its around 8-12* form TDC min PtV chasing each other

PREDATOR-Z

Yes, Max lift is close to or at BDC (piston is furthest away from valves)

lsexpress

iTrader: (-1)

.650 I would guess

Violence.z06

iTrader: (3)

The duration is what you should be concerned with not the lift. i also wonder myself how far you can go duration wise before they hit. from what i see 240 @.50 seems pretty safe

svede1212

iTrader: (3)

I don't think it has any hard set answer. After you get up in that range you should check. Other things like RPM or a stretched timing chain changes valve events.