Drivetrain Transmission, LSD, Clutch, Driveline, Axles...

another broken lnf tranny

Old Nov 1, 2012 | 10:43 PM
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gmlifestyle's Avatar
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From: houston texas
another broken lnf tranny

Title says it all.....I have no 3rd gear....wondering where anyone can get em at a decent price.......shoot me a text 713 584 9426
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Old Nov 1, 2012 | 10:47 PM
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From: Houston
if you have a problem with 3rd gear, the whole tranny is not messed up. You'll just have to replace that gear. Most likely just the synchros though. It's a common problem. Just make sure to flush the tranny out really well.
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Old Nov 5, 2012 | 09:44 AM
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From: houston texas
Ok ...thanks its already in the process of being built so....we will see how much tougher it shall be
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Old Nov 5, 2012 | 09:55 AM
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you broke it on stock turbo/bolt ons? did you NLS to 3rd?
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Old Nov 5, 2012 | 10:58 AM
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From: Warner Robins
Sucks to hear, but likely a synchro.
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Old Nov 5, 2012 | 04:30 PM
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From: Tejas
Originally Posted by leemanfor
you broke it on stock turbo/bolt ons? did you NLS to 3rd?
I've broken two with the stock turbo, one of them NLS'd less than five times. Never grinded any gears or missed any shifts/NLSs on the second one either. I think it's just how the power comes on, any wheel hop vs traction, and any drivetrain mods (like sticky clutch).
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Old Nov 5, 2012 | 04:36 PM
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WIth the way these transmissions are designed good luck finding a shop that can do a rebuild of just one gear/synchro. They are few and far between and charge alot for labor! the GM dealers dont even try most of the time cause it's a pain in the ass even with the specific tools required and if it's a warranty approved repair they just replace the entire transmission instead of the hassle of Rebuilding! Good luck! and post up if you do find a good shop that can fix it for cheap!
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Old Nov 6, 2012 | 12:35 AM
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From: Encino,Ca
Car-part.com
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Old Nov 6, 2012 | 12:37 AM
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Originally Posted by thedubsack85
WIth the way these transmissions are designed good luck finding a shop that can do a rebuild of just one gear/synchro. They are few and far between and charge alot for labor! the GM dealers dont even try most of the time cause it's a pain in the ass even with the specific tools required and if it's a warranty approved repair they just replace the entire transmission instead of the hassle of Rebuilding! Good luck! and post up if you do find a good shop that can fix it for cheap!
My 2nd gear syncros went, and they replaced the entire transmission because it was more cost effective than the labor
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Old Nov 6, 2012 | 06:34 AM
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From: Warner Robins
While we're talking about transmissions, would it be better to get a used F35 with lower miles, or just buy from a vendor (modified/more stout)? I plan to keep the car stock, or maybe just a tune only. All I have is the MD, lol.
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Old Nov 6, 2012 | 08:12 AM
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Originally Posted by prevsrt4owner
While we're talking about transmissions, would it be better to get a used F35 with lower miles, or just buy from a vendor (modified/more stout)? I plan to keep the car stock, or maybe just a tune only. All I have is the MD, lol.
if you only plan to keep it stock, then buying a used transmission would be your bet. if you plan on modding and making big power, a 4.05 or 4.45 would be your best bet
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Old Nov 6, 2012 | 12:06 PM
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From: Warner Robins
Originally Posted by leemanfor
if you only plan to keep it stock, then buying a used transmission would be your bet. if you plan on modding and making big power, a 4.05 or 4.45 would be your best bet
Good deal! Thanks.
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Old Dec 4, 2012 | 03:36 PM
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From: houston texas
Ok update my tranny is done .....got the whole thing cryo treated new 3rd gear new synchros,,, with 4.05 final drive....and over coarse did what zzp does to thiers ....torqued down harder then spec on the bearing preloads.....the only thing now is that my gears sound like their howling a bit....but runs really good....shifts are sharp and smooth... Mongolrat I can use some input!
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Old Dec 4, 2012 | 03:59 PM
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From: Port Perry
"cranking it down harder than spec on preloads" and now it howls? sadly is not a surprise.
we use shims.
600 dollars to rebuild an F35 plus parts. cheers. shipping is a pita.
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Old Dec 4, 2012 | 04:11 PM
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We used shims as well.....everything went back in like stock trans except evrthing was cryotreated including the shafts bearings crushsleeve etc..... So since their is more load on the bearings and gears. Is it normal?
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Old Dec 4, 2012 | 04:17 PM
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From: Port Perry
We have to make the spacers for the endfloat. I did Mongorats tranny and it was cryo'd , and we built it from a boxful of parts for Mongo, and he put it and he says its wonderful. Not sure what to say here.
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Old Dec 4, 2012 | 04:44 PM
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Why did you over torque the bearings? The noise is them yelling f u for doing that.
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Old Dec 4, 2012 | 09:25 PM
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you said you got your tranny cryotreated? where in houston can you cryotreat your parts???
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Old Dec 4, 2012 | 10:37 PM
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From: houston texas
Its not in houston...I sent it out of state
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Old Dec 5, 2012 | 12:34 AM
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From: california
Send it back....?
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Old Dec 5, 2012 | 07:16 AM
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From: Port Perry
I can say that piecing together a transmission from a box of parts like Mongorat's cryo'd one is not easy. We are fortunate we do so many, and have assembled trans here that we can pull apart to check things. That said, Mongorat had put everything stripped apart, carefully placed in plastic bags, all marked and everything perfect, but was still missing three small parts that would have made the assembly a disaster if we had missed that.

Good luck
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