85 700r4 vs 88
Thread Starter
Racer
Joined: May 2004
Posts: 270
Likes: 0
From: NORFOLK VA.
85 700r4 vs 88
Ok I put a 88 700r4 in my 85 Vette I used the lockup solonoid and wiring from the 85 the problem is that when it goes into lockup it shudders I changed the lockup solonoid no difference I changed the torque converter no difference engine runs fine, any ideas? 
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Odd. I have an '85 and had the tranny shop rebuild my stock 700R4 with beefier parts to handle my mods.
He updated the internals to the later 700R4 and used special clutches, etc.. etc... What I noticed is that even at WOT the car locked into 4th at like 65MPH and shuddered like hell, barely accelerating.. Had him remove the sleeve and the car is runnign fine, even though it doesn't upshift at WOT to 4th. (I'm having him fix this hopefully this week)..
Wonder if it is some minute difference in the '85 valvebody or sleeve when used with a newer 700R4 or updated 700R4 to newer specs?
He updated the internals to the later 700R4 and used special clutches, etc.. etc... What I noticed is that even at WOT the car locked into 4th at like 65MPH and shuddered like hell, barely accelerating.. Had him remove the sleeve and the car is runnign fine, even though it doesn't upshift at WOT to 4th. (I'm having him fix this hopefully this week)..
Wonder if it is some minute difference in the '85 valvebody or sleeve when used with a newer 700R4 or updated 700R4 to newer specs?
Thread Starter
Racer
Joined: May 2004
Posts: 270
Likes: 0
From: NORFOLK VA.
Originally Posted by MrNuke
Odd. I have an '85 and had the tranny shop rebuild my stock 700R4 with beefier parts to handle my mods.
He updated the internals to the later 700R4 and used special clutches, etc.. etc... What I noticed is that even at WOT the car locked into 4th at like 65MPH and shuddered like hell, barely accelerating.. Had him remove the sleeve and the car is runnign fine, even though it doesn't upshift at WOT to 4th. (I'm having him fix this hopefully this week)..
Wonder if it is some minute difference in the '85 valvebody or sleeve when used with a newer 700R4 or updated 700R4 to newer specs?
He updated the internals to the later 700R4 and used special clutches, etc.. etc... What I noticed is that even at WOT the car locked into 4th at like 65MPH and shuddered like hell, barely accelerating.. Had him remove the sleeve and the car is runnign fine, even though it doesn't upshift at WOT to 4th. (I'm having him fix this hopefully this week)..
Wonder if it is some minute difference in the '85 valvebody or sleeve when used with a newer 700R4 or updated 700R4 to newer specs?
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Another option is to install one of the over-ride switches that will allow you to flip a toggle switch to disable the converter lock-up feature until you want to engage it.
Flip: disable; flip : enable.
Can be installed without dropping the trans or even the pan.
Jake
Flip: disable; flip : enable.
Can be installed without dropping the trans or even the pan.
Jake
Team Owner
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Originally Posted by MR.KIDD
I just talked with Dana at probuilt and he said something to the same effect that some of the 88s have a aluminum dummy valve in the tcc control throttle valve train I hope this is my problem getting ready to pull and check right now.Thank all for your replys.
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Thread Starter
Racer
Joined: May 2004
Posts: 270
Likes: 0
From: NORFOLK VA.
Originally Posted by gerry85
I too would like to know what the problem was,please keep us posted.
