Will this be enough?
Thread Starter
Junior Member
Joined: Jan 2004
Posts: 30
Likes: 0
Car: 92 Camaro RS
Engine: 305
Will this be enough?
My motor builder was kinda iffy on this so I wanted to see what you guys thought.I using a XE274H Comp cam with 490 lift on vortecs.A friend of mine swears up and down that a set of "Z" springs will be enough for clearance over the stock springs.My motor builder says it "should be".I can get those Z springs cheap and would rather not buy the big Comp springs.This is going in a fresh 30 over 350 4 bolt with 10 to 1 hyper pistons.I think the vortecs are rated to 480 lift so the Z springs should be enough right?
92 Camaro 305tbi----fixin to be 350 carbed
92 Camaro 305tbi----fixin to be 350 carbed
Supreme Member
Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
You may also have a retainer to boss clearance issue. Vortecs have a problem with the valve spring retainer hitting the valve guide, with high lift greater than .460" lift.
Supreme Member
Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Try searching for vortecs on here, and you will find what needs to be done to run more than .460" lift.