700R4 build thread.

[psychodiagnostik]

Thanks man! I swear I don't remember seeing that valve when I took everything apart, I took it apart very slowly & laid the valves out as I took them out. But who knows, it could have rolled off the bench & disappeared. Is there anyway the transmission could have worked without it? At any rate, I'm going to look for a reman or salvage yard type 2 valve body with the one piece 1-2 sleeve, which as far as I can tell should have came on the car. The valve body disassembly photos on the corvette forums all show the one piece.

[clinebarger]

Originally Posted by psychodiagnostik

Thanks man! I swear I don't remember seeing that valve when I took everything apart, I took it apart very slowly & laid the valves out as I took them out. But who knows, it could have rolled off the bench & disappeared. Is there anyway the transmission could have worked without it? At any rate, I'm going to look for a reman or salvage yard type 2 valve body with the one piece 1-2 sleeve, which as far as I can tell should have came on the car. The valve body disassembly photos on the corvette forums all show the one piece.

I have never left the valve out, Or test drove a "Problem" unit that had the Valve missing. But one thing I can say is....Without it, The 1-2 TV Valve cannot "Relay" TV pressure to Oppose Governor pressure that is acting on the actual Shift Valve. Its only role except for acting as a Relay/Spacer is to keep Governor Pressure from Shifting the 1-2 Shift Valve from stroking while in Manual LO.

A few theories....
It would shift too 2nd as soon as you get rolling.
It would take off in 2nd gear.
Line pressure would flood the bore & the unit would burn clutches.

Nothing wrong with a Type-I Valve Body, Truth be told, They are better in High Performance/Heavy Duty applications. My gut feeling is that Valve is somewhere at your place...Some valves can roll 100', Ask me how I know.

I would like to know more about your unit, Aux. Valve Body? etc.

[psychodiagnostik]

Thanks! I'm glad to hear I just might be able to stick with my current earlier VB, if I can just score a salvage yard one or something to get that missing valve.

The unit does in fact have Aux.valve body, & it has three single prong pressure switches that hook up to the harness that just has three connectors. It has the block off plugs in the TCC hydraualic circuit. It does have the weak looking return spring in the throttle valve sleeve.

Also, the 1-2 accumulator valve looks like the one on the diagram for the 1988-1993 VB. Otherwise it looks like the 1982-1987 valve body diagrams in the ASTG manual.

Thanks again for the excellent write up & for taking a look at my parts!

[psychodiagnostik]

Also, I looked at my valves again, my 3-4 line up doesn't look like other pictures of an early 3-4 line up, my 3-4 throttle valve has smaller circumference lands, if that makes any sense.

[psychodiagnostik]

Originally Posted by clinebarger

Nothing wrong with a Type-I Valve Body, Truth be told, They are better in High Performance/Heavy Duty applications. My gut feeling is that Valve is somewhere at your place...Some valves can roll 100', Ask me how I know.

I would like to know more about your unit, Aux. Valve Body? etc.

I man I found that valve! I had torn my garage upside down, and finally just moved my whole workbench out, after searhcing under it with a flashlight. Somehow I missed it until I just moved the dang workbench out into the middle of the garage, & found it. So you were right! It was there all along, and must have fell out & went to the floor when I was dissasembling.

[joeyv69ragtop]

Originally Posted by psychodiagnostik

I man I found that valve! I had torn my garage upside down, and finally just moved my whole workbench out, after searhcing under it with a flashlight. Somehow I missed it until I just moved the dang workbench out into the middle of the garage, & found it. So you were right! It was there all along, and must have fell out & went to the floor when I was dissasembling.

Man I hope I have the same luck. I got my case, and a few other parts back from the trans shop that was installing bushings and washing my case in the jet wash. I'm putting everything back together and I realized I lost the nut the holds the detent lever to the shift shaft! Looking back I know just when I lost it, too. I had a bunch of parts in the pan and it tipped over. Thought I got everything but I guess i was wrong lol.