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Thread: L99 vs LS3
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12-12-2014 #1
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L99 vs LS3
Is there a way to tell the difference between an LS3 and L99 other than seeing a manual or auto trans attached to it? Is there maybe a different number stamped on the block? Any help is greatly appreciated. Thanks!
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12-12-2014 #2
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A l99 will have a water pump that is sort of spaced out as it has VVT and DoD which can been seen once you remove the intake the valley cover will have like a maze Pattern other than those two things the blocks and heads are the same
12-13-2014 #3
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What do you mean by spaced out?
12-13-2014 #4
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Don't the L99s also have VVT? LS3s do not.
Chris
1968 Chevy Camaro SS
LT4 (coming)/T56 DSE suspension
1969 Oldsmobile Cutlass S convertible (442 Clone)
LS3/4L70e, DSE suspension
12-13-2014 #5
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That is correct. The easiest way to tell if you know what you are looking for is the camshaft timing chain cover.
Originally Posted by 130fe
12-13-2014 #6
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Is there a picture comparing the 2?
12-14-2014 #7
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Here you go:
http://www.speartech.com/category_s/1822.htm
Don1969 Camaro - LSA 6L90E AME sub/IRS
1957 Buick Estate Wagon
1959 El Camino - Ironworks frame
1956 Cameo - full C5 suspension/drivetrain
1959 Apache Fleetside
12-14-2014 #8
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Thank you very much
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