Gen1 to ls swap

Automotive powered airboat discussion.
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Gen1 to ls swap

Postby lamarineandprop » Sun Dec 18, 2016 5:18 pm

Does anyone know if there's any kind of adapter made to bolt a cetury lower gear for a gen 1sbc to a new 6.0 liter ls based motor. I know it needs to be spaced just wondering if anyone knows of an adapter or if century has the shaft for the newer style motors. Thanks guys.

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Re: Gen1 to ls swap

Postby One Eyed Gator » Mon Dec 19, 2016 7:08 am

The adapter use a gen1 flexplate which should fit the beltbox driveplate or at least 3 out of the 6 holes should match.

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Re: Gen1 to ls swap

Postby Waterthunder » Mon Dec 19, 2016 9:24 am

There are 3 ways to do it. The important part is that your input shaft is located on the crank. YOU CAN RUN A CRANK EXTENSION OR BUY THE JW flywheel and adapter. Belt drives break flywheels left and right seen 20 to 30 of them break. You can call most any airboat shop and order the LS Flywheel adapter kit. The old ORIGINAL style used a GEN 1 flywheel with a 3/8 thick adapter and cut down bolts. The best way it to DO IT is buy the JW LS dish flywheel with the spacer and use the longer (manual transmission flywheel bolts) THIS DOESN'T NEED A ADAPTER. Sure people will say you don't need to do all of this however when the belt drive or gearbox shaft is not on center of the crank the engine bearings or reduction unit will be damaged. Seen this a few times. Do it right do it once and don't risk a failure.

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