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Old August 24th, 2009, 08:44 PM   #1
Haggar
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Default 4.3 + TH350... what converter?

TBI motor....For a trail Jeep, with more or less stock motor, what should I be running? Any specific stock application to order?

Was that ever an OEM combo? No S-10s, maybe a C/K truck in the early 80s?
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Old August 24th, 2009, 09:04 PM   #2
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A Th350 was never offered behind a 4.3 liter. As for TQ converter you will need to calculate what stall speed you need by Gear ratio, tire size, weight of vehicle, HP and TQ of motor. I would think a regular SBC TQ would work you just need to figure out the stall speed you need. I would call TCI and give them all the specs and they will tell ya what would work best.

EDIT: If you are not running wild gears or huge tires I would try a stock converter out of something like a low HP late 70's 305 caprice classic. they made about 160 hp just like the tbi 4.3
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Old August 24th, 2009, 09:18 PM   #3
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A Th350 was never offered behind a 4.3 liter. As for TQ converter you will need to calculate what stall speed you need by Gear ratio, tire size, weight of vehicle, HP and TQ of motor. I would think a regular SBC TQ would work you just need to figure out the stall speed you need. I would call TCI and give them all the specs and they will tell ya what would work best.

EDIT: If you are not running wild gears or huge tires I would try a stock converter out of something like a low HP late 70's 305 caprice classic. they made about 160 hp just like the tbi 4.3
~3500lbs, 5.29 gears, 36" tires...
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Old August 24th, 2009, 09:27 PM   #4
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with that much gear a stock stall converter will do just fine.
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Old August 24th, 2009, 10:25 PM   #5
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use the stock converter from the turbo 350 it will probably work out just fine. most tired old smallblocks dont put out much power and they can still light up the tires in the old boats.
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Old August 25th, 2009, 06:11 AM   #6
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use the stock converter from the turbo 350 it will probably work out just fine. most tired old smallblocks dont put out much power and they can still light up the tires in the old boats.
X2, with your gears, tire size and weight I dont see a problem running a stock converter. If you dont have one like I said look for and old 305 tuna boat or an early chevy truck with a 305/th350 combo and use that converter. I am 99% sure a 350/th350 has a slightly lower stall speed vs the 305 combo's.
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