454 to 700r4?

[ZMAR]

Originally Posted by JCampbell

I thought about trying to make a 700r work in my dually. For what it’s worth, I’d rather run a trans that I know will hold up (TH400) and drive/use the truck without worrying about it, than run a trans that may or may not hold up (700r), but always have that kernel of doubt in the back of my head.

But then again, I’m comparing a 1 ton to a 1/2 ton.

I think I'm going to spruce up my 350 and drive the whole setup until it completely dies out. Then drop the 454 and put either 4l80e or a th400. You guys might know the problem I'm having. The motor bust right off and idles great. If you take off with half throttle it does fine. If you ever drop the hammer it will spit and sputter and sometimes die no matter how fast your going. If I run it like this for 30min or so it eventually gets to where it runs great. I can go from a dead start to 80 in no time. What in the h3ll is that all about?
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