700r4 Issues

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Caspian

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Nope, I no has the Unicorn. lol
 

Cuba

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I have only 3 at the moment, all 2nd Gen with Aux VB...I believe. I had to check mine that same night we were talking about it. No, nine of them have the shell or any upgrades. In fact these are all original... 1 '89, 2 '88s... the only mods are the ones I put in. And when I overhaul my 1st 700r4, all those upgrades will be put in.

I finished the modifications on the latest with the full SK700 kit. Test drove it & I can definitely feel the difference over all. No more clanging when down shifting, nice crisp shifts too. The reason I had to do something, I was having issues with the TV, TV cable, & governor. It was having trouble shifting from 1st to 2nd, whether I was shifting manually or not. All fixed now. May tweak the cable a bit more though
 

HotRodPC

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So since I brought up that Unicorn 700r4, and now into Foundry BS, not really Unicorns, but you want to see an Oldsmobile guy freak out? Give him a set of Olds heads that have PMD stamps on them. Most real true Olds guys know about them now. BUT, some of the Olds were actually made in the Pontiac Motor Division Foundry. Wanting to say 77 and later. The smogger heads that came on the Windowed Main 350's. Yeah, Avoid the Olds gas 350 for 77 and later. Not so desirable at all.
 

Cuba

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As said, I knew to keep an eye out for them, but I was really beginning to think they did NOT exist and whoever wrote this book or article I read that in was full of ****. So it appears they weren't.

But I still wouldn't be surprised if they were intended for GM 700r4 R&D team for troubleshooting and improvements then they ran the rest of them until they ran out before they changed over the tool and die at the ..... (WTF, mind drew a blank, the factory where blocks, heads, cranks and castings are made. What's that factory called?) Dammit, I hate when I can't think of a word.

From what I read they were for checking for leaks within the clutch packs... according to the 1st Gen ATSG manual. You'd compare the pressure readings for converter tap on driver's side to each of the clutch packs... IDK while in gear or not, I don't remember.

The pressures are supposed to be equal, otherwise there's a leak
**Correction*** it's while driving. Here's that page...
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yevgenievich

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Originally from my 89 trans am. 700r4 with pressure taps. Going in my 67 after shift kit

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HotRodPC

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There's a unicorn right there then. And that's an 89?
 

74 Shortbed

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So when did the pressure taps end, 89???..
 

HotRodPC

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Originally from my 89 trans am. 700r4 with pressure taps. Going in my 67 after shift kit

You must be registered for see images attach
I have only 3 at the moment, all 2nd Gen with Aux VB...I believe. I had to check mine that same night we were talking about it. No, nine of them have the shell or any upgrades. In fact these are all original... 1 '89, 2 '88s... the only mods are the ones I put in. And when I overhaul my 1st 700r4, all those upgrades will be put in.

I finished the modifications on the latest with the full SK700 kit. Test drove it & I can definitely feel the difference over all. No more clanging when down shifting, nice crisp shifts too. The reason I had to do something, I was having issues with the TV, TV cable, & governor. It was having trouble shifting from 1st to 2nd, whether I was shifting manually or not. All fixed now. May tweak the cable a bit more though

Of course I'm sure you know to hoard all the cores you can. Including Converters even if they aren't any good, especially the Th350 cores with mounting pads instead of bolt lugs. I've got 6 of rare hard to find Th350 Converters, a couple big lug Th400 converter cores and a Varialbe Pitch Th400 converter core and the VP Th400 Olds core too. I tend to keep cores when I can. I don't scrap them. I've sold a few but still have plenty.

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74 Shortbed

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My pile is dwindling down, only have 5 400's and 6 350's left and one Cad 400, and people think that cores are made of gold these days.:(
 

HotRodPC

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My pile is dwindling down, only have 5 400's and 6 350's left and one Cad 400, and people think that cores are made of gold these days.:(
Yes, they do. I'm down to 4 400's, one of them being that Olds Variable Pitch 400. About the same in Th350 one being Universal Bell, and then then about 5 700r4's and 3 or 4L60-Es. I haven't collected anymore in awhile and have sold a couple when I was offered to much. But as you said, people think they're gold so some will pay close to gold for them if they need them bad enough.


I just sold a Chevy 400 case only with a broken bell housing. The guy broke his at the track and is going with a Super Bell on his next build so he didn't care it had a chunk missing at one of the bolt bosses. He offered $50 so hell yeah. For a case I won't be using, I'll take it.
 

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Yes, they do. I'm down to 4 400's, one of them being that Olds Variable Pitch 400. About the same in Th350 one being Universal Bell, and then then about 5 700r4's and 3 or 4L60-Es. I haven't collected anymore in awhile and have sold a couple when I was offered to much. But as you said, people think they're gold so some will pay close to gold for them if they need them bad enough.


I just sold a Chevy 400 case only with a broken bell housing. The guy broke his at the track and is going with a Super Bell on his next build so he didn't care it had a chunk missing at one of the bolt bosses. He offered $50 so hell yeah. For a case I won't be using, I'll take it.
Wish I had some 700/4L60's can't find them around here, and when you do they want a ridiculous price for them.
 

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Talked to A&A today. Truck hasn't even been on the lift yet and there is still one more ahead of me. Probably won't know anything until the middle of next week.
 

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