700R4 Revisited

[rockman20]

Okay, I posted on here a while back about my problems with my 700R4 and the torque converter locking up too early. With the gear selector in 3rd, you can feel the 1-2 shift, the 2-3 shift, and then just after that is when you can feel the converter lock and it bogs the engine down.

Keep in mind that this is a 82 Scottsdale K10 that originally had the 6.2L diesel and now is housing a Chevy 350.

Transmission shops told me it was the TV cable. The TV cable that was on there definetly was screwy so I bought one for that truck. Well, it doesn't fit. I don't know if the 350 has a different mount then the diesel does or what, but there is bracket that is bolted to the last two bolts on the back of the intake on the drivers side. This is the bracket where the TV cable goes, but if I put it there, the cable will not reach the clip on the carb. So I am going to custom make a new bracket for this, not that big of a deal.

But I rigged up a setup to hold the TV cable closer to the carb, got everything hooked up, adjusted the cable just so you can get the carb WOT and took the truck for a spin. The shift points changed, but the damn converter still locked at about 30.

So I know that there are 2 transmission shops I am not going to because they both told me it was just the TV cable.

Someone out here must know what all is different between a transmission behind a diesel and one that is behind a gas. Is it just the converter that is different or is there a difference in the valve body also? Anything else?