Too much power and hitting the throttle hard after lock-up could result in some costly effects. 
lock up or not
Thread Starter
Pro
Joined: May 2005
Posts: 745
Likes: 0
From: Miami Florida
lock up or not
im about to go for the converter and the locals here seem to all agree that the additional 2-300 rpm drop on the highway over 4th gear (700 r4) isnt worth the problems/expense/hook up costs and additonal exposure to future breakage of the lock up feature. i like the idea of lower r's on the highway but it seems more predictable to not use lock up. id appreciate guidance.
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Check out what these guys have to say about it. Lots of performance cars come from the factory with lockup working..
http://www.700r4.com/tech/index.shtml
http://www.700r4.com/tech/index.shtml
Melting Slicks
Joined: Oct 1999
Posts: 2,581
Likes: 14
From: Tolar Texas
The typical advise is that your transmission will run hotter without lockup for obvious reasons. However, I'm confident that running without lockup will not damage anything so long as you have a trans cooler that will keep the operating temperature from becoming excessive.
Drifting
Joined: Jul 2004
Posts: 1,695
Likes: 65
From: Kissimmee fl
Finalist 2021 C3 of the Year - Modified
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St. Jude Donor '07
Lock up
I have a 700r4 in my 69 convert. I use the lock up feature on the highway. Mine is wired to a switch in the cockpit and thru the brake light switch. I can disable it when cruising at slower speeds if I want. As far as running hotter, I will know more when summer gets here to FL.
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Drifting
Joined: Oct 2004
Posts: 1,496
Likes: 1
From: Lafayette Louisiana
Do you guys have any opinion about hydraulic lock up? I was looking at Maddog trans. site on ebay last week and he said he could set up a hydraulic lock up with no wiring required. Ever heard of this?
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by MIKER
The typical advise is that your transmission will run hotter without lockup for obvious reasons. However, I'm confident that running without lockup will not damage anything so long as you have a trans cooler that will keep the operating temperature from becoming excessive.
hey Mike ever change that shift detent??? i agree with MikeR if you have a trans cooler it will probalby never be an issue.....whats your stall speed going to be? if it is less then 2000 you probalby will be close to stall speed at 70 mph if you have a 3.08.....on my car with a 2500 stall speed and 3.08 it still has lots of "float" at 75+ with the lock up turned off
Melting Slicks
Joined: Oct 1999
Posts: 2,581
Likes: 14
From: Tolar Texas
Originally Posted by Kevin
Do you guys have any opinion about hydraulic lock up? I was looking at Maddog trans. site on ebay last week and he said he could set up a hydraulic lock up with no wiring required. Ever heard of this?
Originally Posted by Bob
...hey Mike ever change that shift detent???...
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
I liked my lockup but it was done manually. I pressed a button and the lockup engaged, Touched the botton a second time and it disengaged or touching the brake also disengaged it.
I did have problems with breaking the lockup loose under hard usage but it did pull the rpm down a few hundred rpm.
I did have problems with breaking the lockup loose under hard usage but it did pull the rpm down a few hundred rpm.