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Old 11-12-2013, 04:15 PM   #3
Jahloha
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Join Date: Oct 2013
Location: Mililani, HI
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Re: Which trans? SPID & Build Sheet Each Use Different Codes

Quote:
Originally Posted by Bigdav160 View Post
What you say is correct about the RPO codes. TH400 would have been a M40 on the build sheet.

The TH350 is a fine transmission for all but the highest or torque/horsepower small block engines. It will also holdup to a very mild big block.
Digdav:

So I should go off the build sheet code? (I will also get under tonight to verify by using the pan bolt pattern).

Also, I have read all about the 700r4 being the trans for daily driving, but I dont feel quite ready for that sort of swap. So in the mean time, outside of rebuilding the trans, what other components things should I do, to make the th350 achieve its best mpg?
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