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Has anyone ever redrilled their SBC flywheel (1 piece seal version of course) to bolt up to an LS1? It seems like that should be easy enough for a machine shop. Perhaps putting the new LS1 pattern offset from the old SBC pattern like wheels that are drilled for 2 bolt circles??
The biggest problem I see there is that the LS requires a zero balance flywheel and the old SBC flywheel wasn't. What are you trying to accomplish? There are so many great flywheel options for the LS already!
The biggest problem I see there is that the LS requires a zero balance flywheel and the old SBC flywheel wasn't. What are you trying to accomplish? There are so many great flywheel options for the LS already!
The biggest problem I see there is that the LS requires a zero balance flywheel and the old SBC flywheel wasn't. What are you trying to accomplish? There are so many great flywheel options for the LS already!
Was trying to figure out why someone couldn't modify an LT1 flywheel so they can use it along with the entire LT1 T56 trans, bellhousing, clutch set, hydraulics, fork, etc with an LSX. I know that you can change the 94+ LT1 t56 midplate, bellhousing, and input shaft to build an LS1 version, but that's several hundred dollars plus it still leaves one needing a clutch and hydraulics.
The LT1 flywheel wasn't zero balanced either. A custom flywheel is NOT cheap, and any minor dollar savings would be lost here, not to mention giving up a wide variety of clutch options.
The LT1 flywheel wasn't zero balanced either. A custom flywheel is NOT cheap, and any minor dollar savings would be lost here, not to mention giving up a wide variety of clutch options.
No, but a machine shop could easily mill the counterweight off and neutral balance the flywheel instead of buying a custom FW. As far as clutch options....I was talking about reusing the LT1 clutch, pp, release bearing, slave, fork, & master.
Just to bring this back up - based on the topicstarter first message i can presume that the bolt pattern of an LS-motor is different to that of an LT1 motor?
There is a flywheel solution for putting a bmw-gearbox on an LS1 motor. In order to know if it's also possible to use this on a LT1 engine i need to know if the crankshaft bolt pattern is the same for both? This info is hard to find so i've measured the bolt pattern in order to get it out there Anyone know if this is the same for the LS bolt pattern?
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Flywheel to Crank bolt pattern 
Anyone know if this is the same for the LS bolt pattern?
