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L92 Head?

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Old 10-20-2009, 07:17 PM
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Originally Posted by 1CAMWNDR
I assume you mean the price reflects the flow and power potential. Yes it does. It is meant to be a race piece to bridge the gap between the mass produced intakes from GMPP and Edelbrock and a custom sheet metal intake. Think @$1200 complete with CNC work. Check with Cary for specifics.
Try $2200 . Im just waiting for mine to be finished which will be matched to some MAST med -bore LS3 heads which will be going onto a solid roller 408
Old 10-20-2009, 07:20 PM
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Yep not cheap but you know what. I'd buy it again.
Old 10-21-2009, 09:32 AM
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Originally Posted by flatchat
Try $2200 . Im just waiting for mine to be finished which will be matched to some MAST med -bore LS3 heads which will be going onto a solid roller 408
Woops. Still, if you need it, it beats the **** out of $3500+ for a sheetmetal intake.
Old 10-21-2009, 10:51 PM
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Originally Posted by Rock_Daddy
Im running stock L92's (aftermarket springs) going through the traps at about 7200rpm 9.48@141.05
61 runs so far and no issues.
Good to know. I think I will be ok then
Old 10-23-2009, 08:45 AM
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Here's a similar question. I'm assuming that with the LS3 hollow valves you can run less spring than you need with the L92 valves. Is there any drawback to the added spring pressure? If the car has upgraded pushrods and has the harland sharp mods to the rockers, there's really no issue is there?
Old 10-23-2009, 11:10 AM
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Originally Posted by Jim85IROC
Here's a similar question. I'm assuming that with the LS3 hollow valves you can run less spring than you need with the L92 valves. Is there any drawback to the added spring pressure? If the car has upgraded pushrods and has the harland sharp mods to the rockers, there's really no issue is there?
I had a buddy put thousands of miles on his engine with PRC .660" dual springs. Both with a MS3 cam and then back to a stock cam and keep the springs. No issues.
Old 10-23-2009, 05:28 PM
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Originally Posted by Jim85IROC
Here's a similar question. I'm assuming that with the LS3 hollow valves you can run less spring than you need with the L92 valves. Is there any drawback to the added spring pressure? If the car has upgraded pushrods and has the harland sharp mods to the rockers, there's really no issue is there?
GM uses the lightest springs they can to minimise friction, that can that satisfy valvetrain control & durability requirements.



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