Valvetrain Advice needed
Thread Starter
Registered User
Joined: Sep 2002
Posts: 1,158
From: Chicagoland Area
Valvetrain Advice needed
So after a long and painful process of attempting to diagnose my cars major problems, i found out that my vacuum pressure is all over the place due to some bad lifters. (which is what i originally thought, never listen to ur mechanic 
)
Anyways, who makes some good Lifters for my LT1. Not only Lifters, but I would also like to replace my valve-springs while i'm in there as well as my pushrods.
Right now I am running the Hot Cam Kit on an otherwise stock engine. I hear a lot about the springs being weak, so that is the obvious reason I'm going to replace them. My car revs to about 6400 MAX right now.
I would like a good Lifter, Pushrod, and Valve-spring setup for the current state of my car, but i also want something to be quality enough in case i ever go with a slightly "bigger" cam in the future.
Thanx for the replies, i appreciate quick responses because i would like to order these parts ASAP to get my damn car running! Thanx again
)Anyways, who makes some good Lifters for my LT1. Not only Lifters, but I would also like to replace my valve-springs while i'm in there as well as my pushrods.
Right now I am running the Hot Cam Kit on an otherwise stock engine. I hear a lot about the springs being weak, so that is the obvious reason I'm going to replace them. My car revs to about 6400 MAX right now.
I would like a good Lifter, Pushrod, and Valve-spring setup for the current state of my car, but i also want something to be quality enough in case i ever go with a slightly "bigger" cam in the future.
Thanx for the replies, i appreciate quick responses because i would like to order these parts ASAP to get my damn car running! Thanx again
Thread Starter
Registered User
Joined: Sep 2002
Posts: 1,158
From: Chicagoland Area
Anyone know of stuff I should get at Thunder Racing? I was thinking of going their to order stuff, trying someone different... Unless someone can give me some Summit part #s
Thanx for any advice u can give.
Thanx for any advice u can give.
Registered User
Joined: Mar 2002
Posts: 4,827
From: Waynesboro, PA
I'm going to be running Comp R lifters, Comp Chromemoly Hardened pushrods, and I'm not exactly sure which springs my mechanic is going with.
That's just my recommendation though. I got all the parts but the lifters from Thunder. I got the lifters direct from comp.
That's just my recommendation though. I got all the parts but the lifters from Thunder. I got the lifters direct from comp.
Thread Starter
Registered User
Joined: Sep 2002
Posts: 1,158
From: Chicagoland Area
I'm thinking of going with these parts:
Part #: 91-235-D
DESC: Isky 235-D Chrome Silicon Valve Springs, 1.260 OD Single Spring w/ damper, suitable to .550 lift, set of 16
Part #: 40-10621-16
DESC: Crane One-Piece Cold-Forged Pushrods, 7.200" (OEM Roller - Factory Length)
Part #: 63-850-16
DESC: Comp Cams OE Replacement Hydraulic Roller Lifters, SB Chevy & LS1
These are all from www.thunderracing.com Does anyone think I need anything to go with these parts? Is this good stuff for my Hot Cam Setup?
Part #: 91-235-D
DESC: Isky 235-D Chrome Silicon Valve Springs, 1.260 OD Single Spring w/ damper, suitable to .550 lift, set of 16
Part #: 40-10621-16
DESC: Crane One-Piece Cold-Forged Pushrods, 7.200" (OEM Roller - Factory Length)
Part #: 63-850-16
DESC: Comp Cams OE Replacement Hydraulic Roller Lifters, SB Chevy & LS1
These are all from www.thunderracing.com Does anyone think I need anything to go with these parts? Is this good stuff for my Hot Cam Setup?
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