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LM7 5.3,iam in need of cam info.

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Old 09-01-2011, 04:47 PM
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Default LM7 5.3,iam in need of cam info.
iam building a 5.3 and iam trying to find out how big i can go with the cam with out changing my rockers, ill change the springs but everything is stock on this engine, i just want to go bigger on the cam, the guys at comp cams gave me a cam they thought would be good,The cams duration @ .050 is 206/210 Lift is .450/.480 with a 112 LSA, iam not sure what kinda of gain it give over stock, but i would like to get as close to the 400hp mark as possable with out changing to much, this engine is a swap out for my 1990 chev short bed excab 4x4.thanks for looking any referances would be good.
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Old 09-01-2011, 06:45 PM
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LOL wow thats not much of a spec'd cam..

There are guys running well over .600 lift with no rocker problem...

400 crank or wheel hp??
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Old 09-01-2011, 08:34 PM
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I run a 223/230 .610/.605 in my lm7 little to big but o well found out the hard way
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Old 09-02-2011, 01:58 AM
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Default wow
thats hugh, ya did not have to change out rockers or push rods, or valve springs, then i guess the skys the limits.....
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Old 09-02-2011, 01:59 AM
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thanks for the input, what about valve springs?
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Old 09-02-2011, 02:11 AM
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Cam size dictates valve springs.
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Old 09-02-2011, 04:20 AM
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i cant believe anybody would spec out that cam in the op
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Old 09-02-2011, 11:05 AM
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That cam is barley bigger then stock and the stock ls1 cam is even bigger then that one
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Old 09-02-2011, 02:21 PM
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Originally Posted by ltr450ryder
That cam is barley bigger then stock and the stock ls1 cam is even bigger then that one
thats what the guys at comp told me, i thought it kinda small after seeing all these cams out there in the 500 and up lift.
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Old 09-02-2011, 02:22 PM
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Originally Posted by ltr450ryder
That cam is barley bigger then stock and the stock ls1 cam is even bigger then that one
thats what comp said i should get, but iam still looking
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