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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend> 700r4 no 2nd gear
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Topic Review (Newest First)
01-10-2012 12:59 PM
whyholdback Accumulator pistons are supposed to be a snug fit, especially if you can't pull the piston straight out without the rocking side-to-side. That's fine. Worry if the pistons fall out rather easily.
I believe I have a spare VB of each style, but I'd forst check if Sonnax makes a repair sleeve kit, or a reamer and larger valve.
The stuck valve could explain the late shifting, but I can't see how it could block second.
01-10-2012 12:35 PM
84chevyc10 well i found what was wrong the tv vavle is stuck wide open thats what was wrong with the trans when i rebuilt it but i cleand it up and it was working but now its stuck so ill just spen the money and replace it.hey will the tv vavle fit that came out of a aux vavle body 700r4?mine is not a aux vavle body but i have a parts aux vavle body 700r4?
01-10-2012 11:28 AM
84chevyc10 ok thanks im droping the vb now and ill check it out are the acumalerts sopsed to be really tight in there bores?when i rebuilt the transmission the 1 2 acumuleter was really tight i think ?
01-10-2012 10:38 AM
whyholdback Whenever I had no second, I had to hold first close to redline before going to third. But late shifts are, AFAIK, either a governor gear or the adjustment of the TV cable, or too much line pressure. How any of those could cause loss of second is beyond me, but the 700R-4 is a secondary hobby for me, nothing more.
01-10-2012 10:27 AM
84chevyc10 would that be why it revs to 3500rpm for it to shift?
01-10-2012 10:23 AM
whyholdback Then suspect a stuck valve.
01-10-2012 10:22 AM
84chevyc10 thanks for the fast replay it has the vett servo in it with the 500 boost vavle
01-10-2012 10:18 AM
whyholdback I've lost second gear more than once, but every time it always took 4th with it, because they share the band. If it's second-only, then suspect a stuck valve in the valve body, or some problem with the servo.
I know better than to buy parts before diagnosing the cause, but in this instance I'd start by ordering a 'vette servo.
01-10-2012 09:54 AM
700r4 no 2nd gear

hi i fine this web site very help full.i have a 1984 700r4 that i rebuilt and i drove it one time for about a mile or so and my truck ran out of gas and i got the truck home and the next day i went to drive it and it has no 2nd gear it shifts from 1 to 3 to 4 but it goes from 1 to 3 at about 3500rpm and 3 to 4 at about 3100rpm any help would be great thanks

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