4l60e Rebuild: whose the best to go with
4l60e Rebuild: whose the best to go with I need to get my 4l60e rebuilt and have been doing some research and can't seem to find a good vendor. So far I've looked at mad dog transmission, rpm, Flt, and performa built. I have heard the good and the bad stories about a few of these shops so in your opinion who would you suggest. I'm looking for a good dependable unit that will hold up to 700rwhp without failing a few months after its installed. Any recommendations will be appreciated.
On The Tree
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I need to get my 4l60e rebuilt and have been doing some research and can't seem to find a good vendor. So far I've looked at mad dog transmission, rpm, Flt, and performa built. I have heard the good and the bad stories about a few of these shops so in your opinion who would you suggest. I'm looking for a good dependable unit that will hold up to 700rwhp without failing a few months after its installed. Any recommendations will be appreciated.
its in a 99camaro and the power on the motor is around 490 and on nitrous around 640. I dont plan on spraying it all the time but when I do I would like it to hold up pretty well. Besides the car is driven less then 6k miles a year so I wont be beating on it too much
On The Tree
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Depending on what its in the flexplate is an issue that is addressable either way. The 80 is bigger around and longer. Output shaft on a 60 is 27 spline the 80 has 32. The electrical is different but can be made to work properly by a few different methods with some tinkering.... on a positive note the 80 is a bunch stronger right out of the gate than a 60.
Last edited by carlsonauto; Dec 4, 2012 at 11:45 PM.
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On The Tree
Joined: May 2010
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That makes a huge difference, nitrous is extremely hard on parts in comparison to say a turbo or two.. Still a 4l60 in that is a doable thing it just needs to be perfect or it will eat itself up.
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rpm & flt are the best of the best when it comes to the 4l60......they might be a little more expensive than the other builders but for a good reason,they work & work well!
good luck!
good luck!
Yea so far I haven't came across any bad reviews from either company and FLT prices arent really that bad for their level 4 transmission only thing that kind of sucks is I have to ship back a core to them and im not sure if they charge shipping or not on their units.
They do charge shipping but they send whatever u get in a big hard plastic case with the transmission strapped down. You'll have 30 days to ship your core back and they won't charge you the core charge.
Moderator
Joined: Aug 2010
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From: Ann Arbor, MI
As has been mentioned, Nitrous is much harder on a trans than Turbo/Supercharging because it kicks in instantly. I've been told this can break the output shaft and you should therefore consider the Level-5 with the optional $450 Billet output shaft. At that point, for an additional 500 you can get the FLT Level-7 trans which adds a billet input shaft.
As usual, just my opinion.
I have looked over the FLT transmission choices and recently had discussions with several performance builders. First, with 700 rwhp, I would highly suggest at least their Level-5 trans as it has the 5-pinion planetaries which are an important upgrade for that power level.
As has been mentioned, Nitrous is much harder on a trans than Turbo/Supercharging because it kicks in instantly. I've been told this can break the output shaft and you should therefore consider the Level-5 with the optional $450 Billet output shaft. At that point, for an additional 500 you can get the FLT Level-7 trans which adds a billet input shaft.
As usual, just my opinion.
As has been mentioned, Nitrous is much harder on a trans than Turbo/Supercharging because it kicks in instantly. I've been told this can break the output shaft and you should therefore consider the Level-5 with the optional $450 Billet output shaft. At that point, for an additional 500 you can get the FLT Level-7 trans which adds a billet input shaft.
As usual, just my opinion.
Ok cool it looks like FLT has me bought now I just need to do some more saving since this level 7 is gonna cost over 3k. However has anyone dealt with performabuilt they have some cheaper units but I've seen some horror stories also so i'm kind of hesitant on their units.
Ok cool it looks like FLT has me bought now I just need to do some more saving since this level 7 is gonna cost over 3k. However has anyone dealt with performabuilt they have some cheaper units but I've seen some horror stories also so i'm kind of hesitant on their units.
we been down that road, and ended up with an FLT after all that mess..
like i said in my first post,
rpm & flt are the best of the best when it comes to the 4l60......they might be a little more expensive than the other builders but for a good reason,they work & work well!
good luck!
Moderator
Joined: Aug 2010
Posts: 7,323
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From: Ann Arbor, MI
Mike13 is correct that a 4L80E will cost less and handle much more power, but that doesn't include the cost of a good converter, tunnel and other mods, PCM reprogramming and more. The FLT will glide right in. (All puns intended.)
