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Re: TH475 vs TH400
It shows up as a 454 v8 Series 30. For 77 truck series the th475 where CS -454 v8 Super Goose, CL - Mobile home chassis, GT - GMC school bus
But it does have the hd torque convertor with 6 lugs vs regular 3 lugs.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73
1992 Camaro RS 305 TBI
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