LS3 & L92 Part Comparison
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Joined: Nov 2006
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From: Right across the river from Huntington, WV
LS3 & L92 Part Comparison 08 LS3
Block 12584727
Crank 12597569
Rod w/Wristpin 12617570
Rod Bolts 11570662
Piston 10.7:1 19168089
Rings 19168090
Lifter 17122490
Lifter Guide 12595365
07 L92
Block 12584724
Crank 12584997
Rods w/Wristpin 12617570
Rod Bolts 11570662
Piston 10.5:1 89018047
Rings 89018049
Lifters AFM 12571595 Non-AFM 17122490
Lifter Guide AFM 12571596 Front Non-AFM 12595365
Lifter Guide AFM 12571608 Rear Non-AFM 12595365
08 L92
Block 12584727
Crank same
Rod w/Wristpin same
Rod Bolt same
Piston 10.5:1 19178595
Rings 19178596
Lifters same
Lifter Guides same
I have no idea if there is any difference between the blocks or cranks but they do have different part numbers.
This does solve the mystery of the L92 and LS3's using the same rods, rod bolts, and wrist pins
As discussed in other posts, the cams are different between the LS3 and L92; as well as the LS3 uses different springs, retainers, and lightweight intake valves.
There are at least 3 different casting numbers between L92, L76, and LS3 heads.
Block 12584727
Crank 12597569
Rod w/Wristpin 12617570
Rod Bolts 11570662
Piston 10.7:1 19168089
Rings 19168090
Lifter 17122490
Lifter Guide 12595365
07 L92
Block 12584724
Crank 12584997
Rods w/Wristpin 12617570
Rod Bolts 11570662
Piston 10.5:1 89018047
Rings 89018049
Lifters AFM 12571595 Non-AFM 17122490
Lifter Guide AFM 12571596 Front Non-AFM 12595365
Lifter Guide AFM 12571608 Rear Non-AFM 12595365
08 L92
Block 12584727
Crank same
Rod w/Wristpin same
Rod Bolt same
Piston 10.5:1 19178595
Rings 19178596
Lifters same
Lifter Guides same
I have no idea if there is any difference between the blocks or cranks but they do have different part numbers.
This does solve the mystery of the L92 and LS3's using the same rods, rod bolts, and wrist pins
As discussed in other posts, the cams are different between the LS3 and L92; as well as the LS3 uses different springs, retainers, and lightweight intake valves.
There are at least 3 different casting numbers between L92, L76, and LS3 heads.
Last edited by drain89; Feb 1, 2008 at 12:56 PM.
