Pushrod Length For Ls6 Motors?
Thread Starter
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From: Newberry FL
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St. Jude Donor '07
Pushrod Length For Ls6 Motors?
Just curious is there a difference in lengths on the LS1 motors than the LS6 motors when it comes to the pushrods? I think 7.4 is the standard for both, but want to make sure. 
Thanks in advance,
Micah
Thanks in advance,
Micah
Thread Starter
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From: Newberry FL
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St. Jude Donor '07
Great, I am running LS6 heads, but the cam I have is 232/236 .575/.578 113+2 LSA and I think that my non-milled CNC'd LS6 heads and stock length pushrods are the ticket, unless someone thinks differently.
Micah
Micah
Burning Brakes
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Originally Posted by mph1972
Great, I am running LS6 heads, but the cam I have is 232/236 .575/.578 113+2 LSA and I think that my non-milled CNC'd LS6 heads and stock length pushrods are the ticket, unless someone thinks differently.
Micah
Micah
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From: Newberry FL
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St. Jude Donor '07
Originally Posted by NeverT00Fast
It'll work. I'm running TSP chromoly 7.4 PRs with my 237/242 603/609 113LSA cam, and they work fine. I was told I could also use 7.425 PRs to reduce the valvetrain noise(sewing machine sound).
Thanks for the information. I am certain that I have things worked out now that I got my car going back together, but it is always nice to get other opnions.Micah
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Le Mans Master
Joined: Feb 2002
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From: San Marcos Texas
Originally Posted by NeverT00Fast
It'll work. I'm running TSP chromoly 7.4 PRs with my 237/242 603/609 113LSA cam, and they work fine. I was told I could also use 7.425 PRs to reduce the valvetrain noise(sewing machine sound).
Your sig says your running PRC 243 heads. I'm pretty sure PRC heads comes with aftermarket valves and not the longer stock hollow GM LS6 valves even if they are stock size valves. Most CNC head companies just buy bare castings and use aftermarket stainless valves. This will make a difference in what pushrod length is needed...
Last edited by chriswtx; Mar 30, 2006 at 11:13 PM.
Burning Brakes
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Originally Posted by chriswtx
Your sig says your running PRC 243 heads. I'm pretty sure PRC heads comes with aftermarket valves and not the longer stock hollow GM LS6 valves even if they are stock size valves. Most CNC head companies just buy bare castings and use aftermarket stainless valves. This will make a difference in what pushrod length is needed...
Le Mans Master
Joined: Feb 2002
Posts: 5,970
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From: San Marcos Texas
Here's some good reads on pushrod length. Not to sure on the lenght of LS2 valves?? there not hollow I know for sure.
http://forums.corvetteforum.com/show...um_id=1&arch=1
http://forums.corvetteforum.com/show...m_id=49&arch=1
http://forums.corvetteforum.com/show...um_id=1&arch=1
http://forums.corvetteforum.com/show...um_id=1&arch=1
http://forums.corvetteforum.com/show...m_id=49&arch=1
http://forums.corvetteforum.com/show...um_id=1&arch=1
Le Mans Master
Joined: Feb 2002
Posts: 5,970
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From: San Marcos Texas
The LS2 uses the 01' Z06 cam which is the standard LS1 base circle. In 2002 the LS6 got the longer hollow valves and small base circle cams. So I'm guessing the LS2 valves are standard length and not longer like the 02' and up LS6...
Either way I would check lifter preload and pushrod length. Also make a call the someone like LG motorsports or A&A corvettes to make sure...
Either way I would check lifter preload and pushrod length. Also make a call the someone like LG motorsports or A&A corvettes to make sure...
Thread Starter
Race Director
Joined: Apr 2004
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From: Newberry FL
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St. Jude Donor '07
Originally Posted by chriswtx
Your sig says your running PRC 243 heads. I'm pretty sure PRC heads comes with aftermarket valves and not the longer stock hollow GM LS6 valves even if they are stock size valves. Most CNC head companies just buy bare castings and use aftermarket stainless valves. This will make a difference in what pushrod length is needed...
Thread Starter
Race Director
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From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
After reading the different posts that I have found and was provided and I think my 7.4 lengths will be fine.
JoeyG - I am just taking my time and see light at the end of the tunnel!
JoeyG - I am just taking my time and see light at the end of the tunnel!
