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Old 12-31-2007, 03:32 PM
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Originally Posted by xlr82sxs
ok, i found this on ls1tech..
If this is true, the how come I am able to use a stock head gasket, 7.4 pushrods, on a cam with the stack base circle???? I don't think they are milled much if any..
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Old 12-31-2007, 03:39 PM
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Originally Posted by sleek silverado
If this is true, the how come I am able to use a stock head gasket, 7.4 pushrods, on a cam with the stack base circle???? I don't think they are milled much if any..
i'm still searching man, i'm not trying to prove anyone wrong either. i'm trying to figure out if i got shafted or not.
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Old 12-31-2007, 03:42 PM
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That is what I am concerned about. I want everyone to know what they are buying. They are good heads and they made a huge difference. I think it is up to the individual to do the math. I personally screwed up, but in the end I will make more hp and have better ET's.
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Old 12-31-2007, 03:45 PM
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The dish on the 5.3 piston may be +7cc.
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Old 12-31-2007, 03:48 PM
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Oh ok, but just make sure. That will not put you at 10.75 though.
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Old 12-31-2007, 03:51 PM
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I know. I think LM7 specs are somewhere on the net. Anyone know?
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Old 12-31-2007, 03:54 PM
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the LM7, L59, LM4 are 9.5cr and the L33 is 9.9:1cr
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Old 12-31-2007, 03:55 PM
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Originally Posted by amadeospike
Oh ok, but just make sure. That will not put you at 10.75 though.
what do you think then? should i sell the heads or keep on keeping on..(?)
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Old 12-31-2007, 03:59 PM
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Originally Posted by xlr82sxs
the LM7, L59, LM4 are 9.5cr and the L33 is 9.9:1cr
What about deck height and piston dish?
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Old 12-31-2007, 04:01 PM
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Originally Posted by xlr82sxs
what do you think then? should i sell the heads or keep on keeping on..(?)
I put them on my truck with the 228R and it runs good up top. I would guess an easy 350 rwhp.
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