I have a guy willing to give up his Th 400 for a good price, granted I don't know much about this trans HOW does this trans compare with th 350 and 700R4 in a street/track car? What am I gaining and what a I loseing by putting this trans in my car ?


Thanx,

"KB"

 

The th400 is stronger than the th350 or the 700r4. You only get a 1:1 ratio in 3rd on the th400 verses .70:1 for 4th on the 700r4. So high speed cruising you will be turning higher rpms than a 700r4.

 

have you thought about the torque arm at all? if you go after market and use a floor pan mounting location go with the th400 other wise i'd use the th350 and b&m pn30299 for the crossmember and torque arm.

 

What is a gear vendors overdrive?

 

You can see a picture of it on my web site. Check the page "Conversion to TH400." I have an explanation of it there also. Or you can go to the company web site at www.gearvendors.com. Check it out.

 

Drive around in 3rd gear and see how you like it. Add a few hundred rpms to that since the th400 won't lock-up. A th400 is stronger, but at your power level a th350 would be a better alternative because the th400 sucks more power from the engine. A 700r4 could be built at a decent price to handle your the power of your engine without a problem and you would have overdrive. The gearvendors overdrive is really nice, but you pay for that 'nice' it a big way.