6.2 Diesel to 350 Swap ? Help needed - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 02-25-2011, 06:10 PM Thread Starter
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6.2 Diesel to 350 Swap ? Help needed

Hey there, I recently picked up an 83 Silverado K20 that currently has the 6.2 liter diesel in it, "rust free and straight as an arrow". I compression tested the motor and it's shot. So, I'm trying to figure out if I should keep the diesel, find a used one and get it going, or put a 350 in it? I've heard some good and bad of both, and price is a major issue when a used diesel is as much as a new small block. What I need to figure out is, what do I need to change to install the 350? I have the TH400 transmission currently, and I heard I have to change the converter? I also heard that if I purchase the correct engine harness, I can plug right into the firewall block, and be down the road. If anybody has done this swap, please let me know. I'm kind of lost on this, and I keep finding conflicting information. I should mention I do have an SB at the machine shop right now, as well as a set of Vortec heads, so this swap wouldn't be that far off, but I don't know for sure? Thanks for your help! Jp
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post #2 of (permalink) Old 02-25-2011, 06:13 PM Thread Starter
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Here's a couple pics!

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post #3 of (permalink) Old 02-25-2011, 11:29 PM
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I would keep the diesel because of milage . But if you must you don't need to chage torque converters . It will work just fine but will shift a little sooner than a gas tranny . Find the hot wire going to the injector pump and use that for your hot wire on the distributer . Everything else electrical bolts up the same way .
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