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Old 11-16-2006, 09:10 PM
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Default ***Best Atermarket Transmission***

My transmission has been slipping, and finally went out lat week. I am faced with the decision of whether to get a transmission from the dealership intalled for $1800 with a 3 year 30,000 mile warranty, or buy an aftermarket transmission. What are your opinions. Should I go with a new one or an aftermarket that costs a little more. I have found a few on the internet that look good, but only have a one year warranty. Are these transmissions worth the money?
Old 11-16-2006, 09:18 PM
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I am personally going with the FLT 4L60E when my tranny goes out. They look like they have a good product, and I've heard nothing but good things about their product. They're also a sponsor on here, and have 4L80E's and T56's as well.
Old 11-16-2006, 09:35 PM
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Old 11-16-2006, 09:35 PM
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Give gearstar a call. You can find a link to them off of Yanks site at WWW.converter.cc
Old 11-16-2006, 09:46 PM
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Old 11-16-2006, 10:14 PM
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RPM....hands down....checkout corvetteforum.com, C5 FI section....everyone uses them. Daily drivers that run low 9's use Rodney's RPM tranny. I use it, after breaking my $3771 Rossler tranny.
Old 11-17-2006, 12:43 PM
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I too intend to go with an FLT in the near future. I've only heard good things about them.
Old 11-17-2006, 01:39 PM
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This is just my .02, Id go with a stocker with the warranty. Ive been through 3 4l60e's and even though they can be built to handle some serious power, They want last long. The 4l60e is junk. Either way your going to be replacing it again you can count on it. Just my opinion even though some may disagree..
Old 11-17-2006, 02:33 PM
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If you do enough research, you will see that the aftermarket builders put heavy duty parts in the places where the stockers fail. I can't recommend a particular brand, not having used any. But they seem to have done their homework on an known weak transmission.
Old 04-18-2007, 04:48 PM
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i run the **** out of my gearstar transmission... never missed a beat, and if it does -i know the warranty will back it up
Old 04-18-2007, 05:46 PM
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If you're working with a GM dealer to get a SERTA, should be a 3 or 4 year, 50k mile warranty. If you're near stock power and don't have tools/space to work on it - I'd do that, personally.

If you're running a stouter motor, consider some of the other recommendations on here that are sponsors - very good reputations.
Old 04-18-2007, 07:25 PM
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One more vote for RPM two of my friends have them in c5's with 408's with 150 to 200 shots on them and they r holding up very well. I havent really had a lot of luck with FLT
Old 04-18-2007, 08:29 PM
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my performabuilt stage 2 runs great, and at a great price. Only been in for a week, but so far no problems.
Old 04-18-2007, 09:40 PM
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my performabuild level 1 tranny has been in there for a about 2 months but I have been on two 800 mile road trips since and it's been perfect
Old 04-19-2007, 08:26 AM
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Performabuilt sounds like they're good, but they're too new to us for anyone to say whether they're good or not.
Old 04-19-2007, 10:17 AM
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Old 04-25-2007, 09:47 PM
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Originally Posted by LS1rulz
Performabuilt sounds like they're good, but they're too new to us for anyone to say whether they're good or not.
I have a performabuilt 4l65e & there 3500 stall, I have not been to the track but have been on the dyno and street driven the car for prob. 500 miles so far. Everything is very well.
Also I believe performabuilt has been around for over 30 years. just under a different name or they operate under a parent Co.
Old 04-26-2007, 07:48 AM
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Are going to add additional mods that really up the HP and RPM such as a cam? Basically a lid and catback car doesn't need a heavy duty transmission. $1800 installed with a 3 year warranty (that doesn't require shipping a broken tranny to the rebuilder) for a near stock car is worth serious consideration.
Old 04-26-2007, 09:01 AM
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We also do not require the return of the core trans our trans are all sold out right shipping included.
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Old 04-26-2007, 12:38 PM
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No core to mess with is a bonus.

I was just referring to the value of a warranty where the place that does the install also does the warranty. If something does go wrong, the broken tranny doesn't need to be shipped and there is (most likely) no labor charges for the R&R portion.

I wouldn't think this was a good option on a heads cam car, but for a bolt-on (assuming a 3000ish stall) a 3 yr warranty is hard to pass up. Just make sure you can trust the stealership. I'd hate to see them deny the warranty because of headers or some other mod.



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