Adjustable Rocker arms
Thread Starter
Joined: Sep 2007
Posts: 1,637
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From: Sandbox, Kuwait
Adjustable Rocker arms Got one that has me scatchin my head.
Do we actually need adjustable rocker arms if we have hydraulic lifters?
If we get the pushrod length about right it all should be fine?
I have a LS6 engine with LS6 heads, but i just bought GMPP heads that are 0.055" milled with 0.040" gaskets. So i have to adjust for a drop of 0.072" (0.055"+0.017") but the LS6 valve are also 0.6mm taller than LS1 so from the usual 7.400" i need to remove and additional 0.0236".
Do we actually need adjustable rocker arms if we have hydraulic lifters?
If we get the pushrod length about right it all should be fine?
I have a LS6 engine with LS6 heads, but i just bought GMPP heads that are 0.055" milled with 0.040" gaskets. So i have to adjust for a drop of 0.072" (0.055"+0.017") but the LS6 valve are also 0.6mm taller than LS1 so from the usual 7.400" i need to remove and additional 0.0236".
You don't need adjustable rockers, although they are nice, but you should measure to get the correct pushrod length. LS6 and LS1 use the same pushrod, I would think you need to adjust by mill and gasket only. But, the stock pushrods are not exactly 7.400" either.
Last edited by vettenuts; Oct 29, 2007 at 05:38 PM.
I am running adjustables (Comp Cams #1500) with hydraulics (RHOADS) lifters.
Adjustables are the only way to go if you want to "dial in" the motor IMHO
CAVEAT: You need a 1/2" valve cover spacer and you need to remove all baffels and bosses in the valve cover to get it all to fit.
Adjustables are the only way to go if you want to "dial in" the motor IMHO
CAVEAT: You need a 1/2" valve cover spacer and you need to remove all baffels and bosses in the valve cover to get it all to fit.
