There may be a new lifter option
Registered User
Joined: Nov 2002
Posts: 4,784
From: Jacksonville
Registered User
Joined: Jun 2003
Posts: 712
From: Amarillo Texas
Just ordered a set from SDPC today, for a 383 Le2
pt sd8689 217.85 /set
Ls7 Lifter preload according to ls1tech, 1 to 1-1/2 turns.
crane did some testing and found that .060" of preload (cold) is best for hp, using (there) lifter. Thats around 1-1/2 turns.. They claim they made 20hp more than using the standard 0.010" (cold)preload setting..
not sure if that applies to these lifters or not
pt sd8689 217.85 /set
Ls7 Lifter preload according to ls1tech, 1 to 1-1/2 turns.
crane did some testing and found that .060" of preload (cold) is best for hp, using (there) lifter. Thats around 1-1/2 turns.. They claim they made 20hp more than using the standard 0.010" (cold)preload setting..
not sure if that applies to these lifters or not
Last edited by roadtrip120; Feb 9, 2007 at 12:53 PM.
Registered User
Joined: Jul 2004
Posts: 3,034
From: Raleigh, NC
.060" is 1 1/5 turn on 7/16" studs and 1 1/2 turns on 3/8" studs, just in case anyone was wondering.
I'm guessing this would be better since it can keep more pressure on the lobes without losing compression or lift. Any more comments about what applications would require these and how to set them up, Bret?
I'm guessing this would be better since it can keep more pressure on the lobes without losing compression or lift. Any more comments about what applications would require these and how to set them up, Bret?
Thread Starter
Registered User
Joined: Mar 2002
Posts: 4,827
From: Waynesboro, PA
Wow, I'm glad to see the reception to these. I wasn't sure if I was off my rocker or not when I posted this because I thought someone has got to know about them and mentioned it here.
Whoever had it, thanks for the part number. I was just getting ready to find it.
Mainly, I'm just glad that there's a less expensive but quality alternative now.
Whoever had it, thanks for the part number. I was just getting ready to find it.
Mainly, I'm just glad that there's a less expensive but quality alternative now.
Registered User
Joined: Mar 2002
Posts: 3,245
From: Ocala, Florida
.060" is 1 1/5 turn on 7/16" studs and 1 1/2 turns on 3/8" studs, just in case anyone was wondering.
I'm guessing this would be better since it can keep more pressure on the lobes without losing compression or lift. Any more comments about what applications would require these and how to set them up, Bret?
I'm guessing this would be better since it can keep more pressure on the lobes without losing compression or lift. Any more comments about what applications would require these and how to set them up, Bret?
Last edited by speed_demon24; Feb 9, 2007 at 02:17 PM.
Registered User
Joined: Mar 2002
Posts: 3,634
From: Newark, Delaware
OK..I'm trying to figure all this out. I always adjust my valves with the motor running. When I did my CC305 cam with COMP "stock replacement" lifters, I went 1/4 turn past "chatter". Wouldn't 1 turn past zero equal 1 turn past "chatter" with the engine running?
Frank
Frank
Registered User
Joined: Dec 1969
Posts: 27,725
From: Little Rock, AR
At the point where chatter just stops, that should be effectively zero lash.