How much abuse can a TH400 take? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mikajo39 · 06-14-2009, 12:56 PM

So I know the TH400 is a pretty tough transmission, but mine has seen better days. I took it in to be examined (for 190 dollars blehhhh) and they said they'd rebuild it for 1200 dollars. Then I told them my application and they said for it to survive behind 400 hp it would need to be upgraded a lot, for the nominal fee of 2100 dollars! Are they feeding me a load of bull? Or would I just need a higher stall speed converter and a shift kit?

06-14-2009, 12:56 PM	#1
mikajo39 Gearhead and audio junkie Join Date: Aug 2008 Location: nunyah Posts: 452	How much abuse can a TH400 take? So I know the TH400 is a pretty tough transmission, but mine has seen better days. I took it in to be examined (for 190 dollars blehhhh) and they said they'd rebuild it for 1200 dollars. Then I told them my application and they said for it to survive behind 400 hp it would need to be upgraded a lot, for the nominal fee of 2100 dollars! Are they feeding me a load of bull? Or would I just need a higher stall speed converter and a shift kit?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.