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Old 04-21-2011, 08:08 AM   #1 (permalink)
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M38A1 engine swap info

I recently picked up a '54 M38A1 and I am looking to swap in a 4.3 chevy engine with a 5 speed.
Does any one have any info on doing one of these swaps?
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Old 04-21-2011, 07:16 PM   #2 (permalink)
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More about swapping a 4.3 into an early jeep than almost any other swaps, keep looking. Start on the Novak site.

Good luck
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Old 04-21-2011, 08:55 PM   #3 (permalink)
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Not exactly what you are looking for but lots of good info here.
http://www.earlycj5.com/technical/en...3-sm-420-swap/
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Old 04-22-2011, 04:29 AM   #4 (permalink)
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Remember,the 4.3 is the same as the Chevy V-8 from the motor mounts back.Leaves more room up front cause it's shorter.
Best thing to do is look for a local Jeep with a Chevy V-8 or 4.3 swap and see what they did.
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Old 04-22-2011, 05:11 AM   #5 (permalink)
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easy swap. Except for the 5 speed. which one have you got? an SM420 is likely a better swap if you plan on using it off -road
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Old 04-22-2011, 09:54 AM   #6 (permalink)
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Quote:
Originally Posted by oldtimingman View Post
easy swap. Except for the 5 speed. which one have you got? an SM420 is likely a better swap if you plan on using it off -road
and for length, depending on lift.
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Old 04-23-2011, 04:55 AM   #7 (permalink)
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You're talking about taking the engine,tranny-transfer case from a 4x4 S-10 ?
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Old 04-28-2011, 06:44 PM   #8 (permalink)
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What I wanted was to put some sort of overdrive trans in when I do the 4.3 swap, and I was thinking since a s10 5 speed would be already mated to the engine it would be the easiest, but the spline count doesn't match the dana 18 t-case and the s10 t case wont work with the axles it has. So I've now decided it would be easier just to find a buick bellhousing and mate it to the t90 trans, then buy a bolt on overdrive later on when I have some more money(I'm working on a high school student budget).
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Old 04-29-2011, 01:46 PM   #9 (permalink)
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I think you're going to need a Chevy bellhousing.V-8 and 4.3 is the same.
Does the Jeep run now? Might be better to gather up all the stuff you need to do what you want,mock it to what needs to be modified and swap in all in together.
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Old 06-23-2011, 09:37 AM   #10 (permalink)
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For right now I'm just gonna run the stock engine for the summer, then swap in the 4.3 using a novak adapter(http://www.novak-adapt.com/catalog/kits_cx.htm) during the winter.
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Old 06-23-2011, 10:10 AM   #11 (permalink)
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