LSx bore/stroke interchange info?

[Samckitt]

Is there a website somewhere that has all the bore/stroke information & interchange info on all the LSx engines GM makes?



Gen I Chevy engines are pretty much interchange crazy, almost anything will work in something else. Are the LSx engines the same way?

[Rhino]

I'm not sure of a complete site of this info, although most of it can be found on the internal engine section of ls1tech. Unfortunately you have to sift through the garbage to get to it.

The big thing to remember when looking for a replacement crank is that in addition to the stroke you're looking for, you'll need a reluctor wheel that is compatible with your PCM. (Either 28 or 54 tooth)

I know that 5.3, LS1, and LS6 cranks interchange. Steve just built a 5.3 with 4.8 pistons, so that should be a relatively straight forward swap.
I'm not familiar with the Gen IV lineup, although I'm pretty certain they have a similar interchangeability as the Gen III's.

[Samckitt]

I went to the GM Performance parts catalog & got these numbers.


Engine....... Bore.. Stroke....... Liters.....CI
................3.18....3.62..........5.3......323
LS1...........3.9......3.62..........5.7......346
LS6...........3.9......3.62..........5.7......346
LS2...........4.0......3.62..........6.0......364
LQ9...........4.0......3.62..........6.0......364
L92............4.06....3.62..........6.2......376
LS7............4.125...4.0...........7.0......427

4.8 LR4........3.78....3.26........4.8.......293
LM7/L59.......3.73....3.62........5.3.......323