L92 Stock Valve Question
03-14-2008, 06:53 PM
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L92 Stock Valve Question I have stock L92's that have GM#064 intake and #063 exhaust valves. When I checked the installed height, the exhaust came in good @1.8" with no shimming required. The intakes all need to be shimmed to get to 1.8 , not a big deal. So today when I started to install the springs and keepers I look across the tops after I have three of them in (2 exhaust and one intake) and you can clearly see that the intake valve sets a little higher than the two intakes. I put a straight edge across all three and I can't touch the two exhaust with the edge resting on the intake. The stem of the valve seems to long. Can that work? All of my intakes will end up being a little higher than the exhaust. Has anyone else seen this?? It just doesn't seem right. What can be wrong?? Thanks
03-15-2008, 04:55 PM
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doesnt sound right,, on my stock L92 heads and stock gm L92 valves the installed height was actually a little on the tight side at 1.78" on intake and exhaust with stock valve seat/seals installed, and all the valve stems were the same height
something is up with your valves,, are they factory gm valves?
gm L92 intake valve part #12590771 (2.16")
gm L92 exhaust valve part#12582719 (1.59")
something is up with your valves,, are they factory gm valves?
gm L92 intake valve part #12590771 (2.16")
gm L92 exhaust valve part#12582719 (1.59")
Last edited by jay_lt4; 03-15-2008 at 05:01 PM.
03-15-2008, 06:11 PM
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Yes they are GM, I got the parts #'s from the Nov.2007 Hot Rod 6.0 Hop-Up part II
and I got them from GM Parts direct. My numbers are not even close to Jaylt4
Mine are intake....#12563063, exhaust....#12563064
Those are the numbers in the article that they used for there L92
Looks like I may have the wrong valves, *****!!! jaylt4 where did your part #'s come from??
and I got them from GM Parts direct. My numbers are not even close to Jaylt4
Mine are intake....#12563063, exhaust....#12563064
Those are the numbers in the article that they used for there L92
Looks like I may have the wrong valves, *****!!! jaylt4 where did your part #'s come from??
Last edited by bluethunder364; 03-15-2008 at 06:18 PM. Reason: *
03-15-2008, 06:41 PM
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I'm a BONE HEAD!!!! got the wrong ones somehow, I just checked the Scoggin-Dickey site for the part #'s. I'd like to know where HOT ROD got those #'s from.
anyone need some #063-#064 valves that fit who knows what the _uck!!!
anyone need some #063-#064 valves that fit who knows what the _uck!!!
