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picklito · 03-01-2016, 02:54 PM

I will defer to Clinebarger for exactly what to modify, but while the engine is out maybe you could open the trans up and do the proper upgrades? Best to do it now while it's out of the truck, eh? I'd think you can have a pretty firm-shifting TH400 that doesn't explode. Lots of potential in that trans.

03-01-2016, 02:54 PM	#56
picklito Registered User Join Date: Sep 2013 Location: Vacaville CA Posts: 490	Re: 4L80E & TH400 Tech. I will defer to Clinebarger for exactly what to modify, but while the engine is out maybe you could open the trans up and do the proper upgrades? Best to do it now while it's out of the truck, eh? I'd think you can have a pretty firm-shifting TH400 that doesn't explode. Lots of potential in that trans.