THM350, THM375B or THM400?
03-12-2002, 07:37 PM
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THM350, THM375B or THM400?
I have a THM200 in my '82 Camaro now, I want stick with a three speed but plan to continue doing engine mods so which tranny should I use?
03-12-2002, 08:32 PM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
The TH350 is the easiest swap. Buy the B&M swap kit. It will have all the proper brackets and mounts to do the swap. You'll need a short tailshaft TH350 (6") to reuse your driveshaft. If you had a 700R4, you would need a long tailshaft TH350 (9").
TH375B is only in a BOP bellhosing bolt pattern although you could swap the internal parts into a chev housing.
TH400 isn't really required unless you have a powerful engine producing a lot of torque. I ran a TH350 in my race car for 2 years with no problems. I only went to a TH400 this winter because I needed a transbrake and it was cheaper to build.
TH375B is only in a BOP bellhosing bolt pattern although you could swap the internal parts into a chev housing.
TH400 isn't really required unless you have a powerful engine producing a lot of torque. I ran a TH350 in my race car for 2 years with no problems. I only went to a TH400 this winter because I needed a transbrake and it was cheaper to build.
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