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how high can I rev this valve train?

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Old 07-21-2013, 09:30 PM
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Default how high can I rev this valve train?

I have a build thread up already but figured I would make another thread on my valve train to see if I am headed in the right direction for a high reving valvetrain (7000-7200)

370 iron block
Stock LSA heads with upgraded inconel exh valves
Brian Tooley .660 kit and Pushrods
239/243 620/620/ 115+4
Holley hi ram 92mm
S480 race cover 96mm 1.32AR

I am contemplating doing the comp trunion upgrade on my stock rockers and wanted to see what everyone thought of them or can i do without them?

Second question is what would this combo want to be shifted at?
Old 07-21-2013, 09:36 PM
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Don't see why 7k would be a problem. You've stayed relatively light on the top side. What lifters? And what lobes is the cam running?
Old 07-21-2013, 10:34 PM
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The LSA intake valves(120g)are WAY heavier than L92 valves(109g)and the LS3(91g)valves are 18g lighter than the l92!!!
#1 priority for you is get some lighter intake valves!!!!
I turn my L92 headed engine up to 7200.
Call Brian Tooley and ask him about which intake valves to run- since you have his spring set.
2nd, your cam is too big, you could take 10 degrees out of both lobes and still have a big cam for what you are trying to do. While you have Brian on the phone get him to spec you a cam.
For reference my 6.0 S480 combo made peak power at 6700 with a 227/235 114+4 cam, and a vic jr intake, your hi-ram should be better in the midrange, and rpm just as well as the vic jr.

Last edited by 3pedals; 07-21-2013 at 10:40 PM.
Old 07-21-2013, 11:24 PM
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Originally Posted by 3pedals
The LSA intake valves(120g)are WAY heavier than L92 valves(109g)and the LS3(91g)valves are 18g lighter than the l92!!!
#1 priority for you is get some lighter intake valves!!!!
I turn my L92 headed engine up to 7200.
Call Brian Tooley and ask him about which intake valves to run- since you have his spring set.
2nd, your cam is too big, you could take 10 degrees out of both lobes and still have a big cam for what you are trying to do. While you have Brian on the phone get him to spec you a cam.
For reference my 6.0 S480 combo made peak power at 6700 with a 227/235 114+4 cam, and a vic jr intake, your hi-ram should be better in the midrange, and rpm just as well as the vic jr.
I stand corrected. I thought the LSA heads had the LS3 hollow stem valves. They're light, like 94-95 grams.
Old 07-22-2013, 12:00 AM
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Yea I do realize the cam was on the big side but I already had it so I figured I would just try it and have something to compare it to when I ran a custom grind.



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