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DirtyLarry · 01-26-2010, 08:15 PM

There was a heavier TH400 that had straight cut gears instead of helical as well as an Allison torque converter. They may have actually been called TH475 and I think were limited to RV chassis (P-chassis).

01-26-2010, 08:15 PM	#5
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: HD Turbo 400 There was a heavier TH400 that had straight cut gears instead of helical as well as an Allison torque converter. They may have actually been called TH475 and I think were limited to RV chassis (P-chassis). __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram