Conversions & Swaps LSX Engines in Non-LSX Vehicles
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8100 caprice

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Old Dec 1, 2012 | 05:20 PM
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LT1 Regal's Avatar
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Default 8100 caprice

Physically possible to fit in 77-90 b car? I'm cool on wiring and tuning, but what about oil pan, motor mounts, and headers?
Car is 77 impala coupe.

Thanks,
-Garrett
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Old Dec 1, 2012 | 11:13 PM
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As far as I understand, the 8.1 is basically an updated big block. I'd start by seeing what's involved in a 454 swap for those cars.
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Old Dec 2, 2012 | 03:00 AM
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Yeah, I don't think it's really LS stuff, just slightly changed old stuff. From what I've read the aftermarket isn't really there for it the way it is for legit ls motors.
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Old Dec 2, 2012 | 07:19 AM
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raylar is the aftermarket provider for 8.1's
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Old Dec 9, 2012 | 07:44 PM
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It should fit without any problems, and with a stock 8.1L /Allison in my 2500HD with just a "Tune" I think it would be pretty fun in a Caprice.
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Old Dec 10, 2012 | 09:20 PM
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You can use any headers designed for BBC, and the motor mounts are the same as SBC/BBC mount points. All the threads in the block are metric however, so make sure to get the engine as complete as possible, and save and re-use all the hardware you pull off the engine.

Oil pan appears to be a rear sump, not sure if you can install a older BBC pan. You'll have to check around.
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