4l60e Problems. Slipping in first and Second
Thread Starter
Intermediate
Joined: Jun 2009
Posts: 30
Likes: 0
4l60e Problems. Slipping in first and Second
Im definitely stumped by this. My 94 has been having trans issues recently. First and second seem to be slipping horribly (i floor it and the engine shoots right to the redline with very little forward movement). third and OD seem to be OK (when going over 70 the car performs like it should when floored). I just drained and replaced the fluid and filter and added TransX (anti slip fluid) to no avail. When holding the brakes at a standstill, OD and 3rd definitely produce more torque than 2nd and first. thats about all i have at this time. Any ideas?
Burning Brakes
Joined: Oct 2009
Posts: 773
Likes: 2
From: Minneapolis MN
Sounds like a straight forward problem,your transmission clutches are worn out.Time for a new trans,rebuild,or used trans.On a 700r4,I would say to check your mechanical governor.But your trans appears to be bad.How many miles on yours trans?Have you beat on your car often?When replacing trans,be sure to get a performance torque converter since you like to drive fast
(thats you getting pulled over for driving fast & givin a ticket
)
(thats you getting pulled over for driving fast & givin a ticket)
Last edited by 94vettelover2; Nov 13, 2011 at 11:02 AM.
Race Director
Joined: Feb 2003
Posts: 11,671
Likes: 20
From: Lake Wylie SC
Try to give Mad Dog Transmissions a call out of Atlanta, GA. I bought a 4L60E from him and it is great. He builds them to handle up to 700hp or so. He has a video you might want to look at on his web site.
Thread Starter
Intermediate
Joined: Jun 2009
Posts: 30
Likes: 0
Sounds like a straight forward problem,your transmission clutches are worn out.Time for a new trans,rebuild,or used trans.On a 700r4,I would say to check your mechanical governor.But your trans appears to be bad.How many miles on yours trans?Have you beat on your car often?When replacing trans,be sure to get a performance torque converter since you like to drive fast (thats you getting pulled over for driving fast & givin a ticket)
(thats you getting pulled over for driving fast & givin a ticket)
Le Mans Master
Joined: Nov 2002
Posts: 7,179
Likes: 2
From: Charlotte, NC
It has about 130k plus miles on it, would a 700r4 bolt up and does it have to be corvette specific? Because i got a 92 trans am that i wrecked recently sitting in my front yard with a fresh 355 and a rebuilt 700r4 just sitting there. And as for my fast driving Ill quote one of my great mentors Col. Wayne Morris USMC Ret., "Drive it like you stole it or buy a Yugo!"
I agree the clutches are probably shot, and there could be something else that caused them to go, but with 130K probably just normal wear and tear..
-=Rick
Race Director
Joined: Apr 2003
Posts: 17,698
Likes: 1,667
From: moraga ca
I went from a 4+3 to a 700r4 to a 4L60e. It won't be difficult at all to change from a 4l60e to a 700r4. You'll have to wack 5/8" off the output shaft (a cutoff wheel works). Use the tailshaft off your 4l60e with the pulsewith generator thingy and swap gears on the tailshaft using the forward positioning hole. You'll have to get an earlier c4 tv/throttle cable bracket and you should be good to go. On my 700r4 I had a switch on the console (I used the overdrive switch for the 4+3) to ground the tcc cable to manually lock and unlock the converter. I used it as a 5th gear when cruising on the freeway. I actually still use the switch to lock up the converter after the 1-2 shift at the strip. It's worth .15 on the quarter on my car. Your old converter will work. I'm not sure if you'll get a check engine light because the ecm won't be receiving a tranny signal but that can be tuned out. Willie
Thread Starter
Intermediate
Joined: Jun 2009
Posts: 30
Likes: 0
Gotcha, how difficult would it be to swap in a manual? I know I'd need to put in a clutch pedal, along with slave cyl. and probably alter alot of other things. Would it be better to just keep it auto or upgrade to something where I could row my own gears?
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Race Director
Joined: Apr 2003
Posts: 17,698
Likes: 1,667
From: moraga ca
If you are a bracket racer and are concerned about consistancy and parts breakage, keep the auto. If you drive on the street or road race, go manual. I've got the C4 for racing and a C6Z for the other type of fun.
Racer
Joined: Oct 2011
Posts: 312
Likes: 0
From: state of insanity
YOU'LL BE TIME AND MONEY AHEAD,AND WAY LESS HEADACHES TO JUST REBUILD OR REPLACE YOU ORIGINAL TRANNY IF YOU HAVE IT REBUILT ASK ABOUT A SHIFT KIT,AND A HIGHER STALL CONVERTER. I THINK YOU'LL BE WAY HAPPIER AND LESS PROBLEMS
Drifting
Joined: Aug 2010
Posts: 1,704
Likes: 8
lots of goodies to put into a 4l60e ,this unit can handle 700+ hp when upgraded to state of the art aftermarket parts.Sonnax has tons of items in his catalogue,some parts requiring drilling or machining,but definatly you have a brand new stronger ,firmer ,agressive transmission,rebuild it with new stronger parts
Last edited by tunedport85inject; Nov 19, 2011 at 03:07 AM.
with most of the others, fix what you got. Even if you went to a manual, you will need/want to change your rear gear ratio's then.
