Push rod lenghts?
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Push rod lenghts?
Anyone know what length push rods to use with a 224/224/ .567/.567 LSA 114. Using LS6 heads. The LS6 heads come with a 7.4 push rod. Would this work with the cam or would I need longer ones?
Thanks...
Thanks...
Last edited by SLPRC5; Jan 10, 2007 at 04:41 AM.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
I know someone running a Comp cam and the GMPP LS6 heads. He used the stock length due to the valve stem length in the heads, along with the smaller base circle, when we measured it came out fine. Having stated that, we also double checked with an adjustable pushrod to verify. I would just use an adjustable to verify the pushrod length.
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
I know someone running a Comp cam and the GMPP LS6 heads. He used the stock length due to the valve stem length in the heads, along with the smaller base circle, when we measured it came out fine. Having stated that, we also double checked with an adjustable pushrod to verify. I would just use an adjustable to verify the pushrod length.
Thanks again
Deno
Burning Brakes
Joined: Nov 2006
Posts: 1,071
Likes: 0
From: Goose Creek SC
Hammer
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
I know someone running a Comp cam and the GMPP LS6 heads. He used the stock length due to the valve stem length in the heads, along with the smaller base circle, when we measured it came out fine. Having stated that, we also double checked with an adjustable pushrod to verify. I would just use an adjustable to verify the pushrod length.
I measured the base circle and it is 1.493 on the new cam.
Thanks,
SLPRC5
Burning Brakes
Joined: Nov 2006
Posts: 1,071
Likes: 0
From: Goose Creek SC
Hammer
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
He has a smaller base circle by about 0.040" but has milled some amount that will sink the rocker relative position lower. He also has taller valve stems that will sink the pushrod lower as well. I think you are going to end up around the stock size, but definitely measure.
The stock setups I have measured have all come out to approximately 0.100" lifter preload.
The stock setups I have measured have all come out to approximately 0.100" lifter preload.
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