i've been think about switching out my th350 to a 400. i am wondering what it would take to switch it over. It is a shortbed half ton with a np203 transfer case. also would it be worth the trouble? what about switching to a 700r4?
Something to think about is that the 700R4 has a lower first gear than either the TH350 or TH400. It makes a big difference in starting effort either plowing or towing. And while the 700R4 has a bad reputation, the later ones are as good as any of the series. The R4 can be built into a very stout transmission, talk to John DiMartino about that.
sonajaab, If you smoked 4 700's they were not built right or you are down right abusing them. The 700r4 can be made to hold more power than most here will make. They will break when abused or not maintained, like anything
I don't know guys............My 2 TAs had R-700s and I
never fried them. My GTO has had the same th-400
for at least 10 hard drag racing years with the stall
converter, line loc, and slicks etc......Now just a stock
converter for Sunday crusin' !:burnout
I just had LOUSY luck with them in my 90 GMC....
and have never replaced a trans. in my newer rigs.
When I worked for Verizon- the bucket trucks they bought in the '90's all had the 700r4 tranny- and some of those trucks saw almost 200,000 miles! The transmissions were great, and they saw a lot of hard heavy use on a daily basis- they also saw a lot of idleing time since most guys did not shut their trucks off in the winter. I would say that with regulal maintenence done- especially after a hard season of plowing, the tranny should last a long time.