Part number 34-3X is our Extreme Duty Street/Strip series TH400 transmission with transbrake. We rate this unit for use with up to 1,000 flywheel horsepower, although it can typically handle upwards of 1,100 - 1,150 flywheel horsepower in many street/strip applications.
Features of this transmission include the following:
~ OEM Chevrolet TH400 transmission case
~ New heavy duty 4-inch extension housing
~ Billet steel input shaft
~ Cast iron forward drum broached for oversize input spline
~ Forged steel forward clutch hub
~ Billet aluminum forward piston
~ Billet aluminum direct piston
~ Billet aluminum intermediate snap ring support
~ Cast iron direct drum with Borg Warner 34 element sprag
~ Borg Warner low roller clutch
~ 6 red racing forward frictions and new steels
~ 6 red racing direct frictions and new steels
~ 4 red racing intermediate frictions and new steels
~ High static carbon rear band
~ Thrust washers replaced with Torrington roller bearings
~ Center support modified to dual feed direct drum
~ GM front pump with .125-inch converter feed restrictor
~ GM sun shaft, intermediate shaft, and output shaft
~ GM planetary gear sets, 2.48:1 1st, 1.48:1 2nd, 1.00:1 3rd
~ Pro Series cast iron transbrake valve body
~ Reverse shift pattern (P-R-N-1-2-3)
~ Teflon sealing rings
~ All new bearings, bushings, seals, and gaskets
~ High flow filter
~ Deep cast aluminum pan with magnetic drain plug
~ Dyno tested to verify all functions
Buick/Oldsmobile/Pontiac case also available at no additional cost (part number 34-3BX).
JW SFI-certified bolt-on bellhousing options available at additional cost.
Reid Racing SFI-certified transmission case and bellhousing options available at additional cost.
Powdercoating available at additional cost.
Higher horsepower options available at additional cost.