My 408 doesnt use much oil

 

I have been waiting on this for a bit ... would it be interchangeable on the LS based motors?

 

It is... or at least should be as all the other LT cranks are. The problem I see is pistons and someone making appropriate ones. The stock LT pistons are useless in an LS and GM kept the same connecting rod length in the 6.6 as all other 3.622" stroke combos at 6.098". So you will need either a custom rod and piston combo or custom pistons. I doubt anyone will bother making anything mainstream anytime soon. Here is the new L8T rod laid over a full floating pin LQ4 rod...




Same rod as any other LT...

 

Maybe Thompson or Texas Speed will have pistons made for some strokers! Gwatney has drop ins so maybe them too.

 

Very helpful information!

So what is the 6.6 LT crankshaft stoke?

From what i gather, the LT has a 6.098" rod length, and the LS is at 6.125".

 

It’s 3.86” stroke

 

Not sure about the Gen V but most standard LS rods are 6.098" (not including 4.8 or LS7)

 

Yes, you are correct...i mistook that information with some of the aftermarket rod lengths out there!

So if a 6.6 LT crank be used on an a LS block, couldn't you just use some LS aftermarket rods / pistons that are made for a LS crank?

 

they would have to be made for a 3.86” stroke, which isn’t common.

 

yet