th-350 gone bad

[Dan75k20]

So it looks like a drum has gone bad in my transmission it is shifting erratically and down shifting way too soon until I lift off of the gas also sounds like something is rattling around inside of the transmission  unless i t is in neutral modulator is connected and the kickdown is also connected . I talked to monster transmission. the good: transmission is under warranty and will be rebuilt with a stronger drum that they install In the monster ss and also send a new torque converter. The bad: I have to pay $250.00 for shipping supply new synthetic fluid $130.00 and my labor  bought the HD transmission rated up to 400 hp so this wouldn't happen!  3 days to ship 3 days to rebuild 3 days to ship back to me. Their builder basically told me the forward drum is not much better than stock that they install in the trans also the weight of the truck  and torque that my engine makes probably caused this not to forget I have 33 12.50 16.5 tires on the truck . in hind sight I would have spent the extra money for stronger parts in the stronger transmission this just sucks that my truck will be out of commission for over a week I'll post pictures of everything as soon as I start working on the truck

[BADAZ chevy guy]

TH350's are getting hard to find. At leased running ones that is. Blew mine a month ago and finely opted for a used 1993 700R4 (4L60). Haven't installed it yet. (Still getting all the parts I need for a full swap.) So I don't know if it needs a rebuild. Hope not.

[bd]

So it looks like a drum has gone bad in my transmission....

Bummer!  Sorry to hear that.  Sounds like they see drum failures often.  At least the builder is standing behind their product with a n/c upgrade.  Still not pleasant, though.  Labor, consumables and shipping to R&R under aftermarket warranty are nearly always at the consumer's expense.

[Dan75k20]

so I dropped the trans pan to see what was going on and email monster transmission pictures something is definitely broken in there

Sent from my Nexus 5 using Tapatalk

[sbx22]

Wow, something is definitely wrong. Hope things work out for you.

[Irish_Alley]

in my recent transmissions searches i think i have read that monster has a bad rap for crappy trans. still think its messed up you have to pay shipping and for fluid

[Irish_Alley]

http://monster-transmission.pissedconsumer.com/ so much they even have a website just for them

[skinu]

THATS TOUGH LUCK, BUT FOR THAT PRICE AND A LITTLE TIME AND PATIENCE YOU CAN JUST ABOUT BUILD A STRONGER DUAL FED WITH A STRONGER DRUM AND A BETTER CASE ,THERES A BOOK I THINK ITS BY RON SESSION ILL GET MY LOANED ONE BACK BUT I GOT MINE AT A BOOK STORES BUCK A BOOK BOX AND ITS WORTH IT ALSO JUST LOOK ON THE SITE GUYS HERE WILL TELL YOU WHAT TO LOOK FOR AND I WOULD HAVE LOOKED AT A T350 WITH A 700R4 1ST GEAR ITS WHAT WE BUILT MY SON WAS SHOWN THIS AND ITS 1ST IS DEEP ITS A WEIRD 1-2 SHIFT BUT ITLL PULL YOU IN THE SEAT

[Irish_Alley]

[Dan75k20]

New update bought a working th 350 and a np203 for 40 I know It works it was in a friends truck and he swapped to a nv4500 and 205  bucks today 203 shifts like butter I am going to swap the th 350 and send mine back to monster they are supposed to install a hardened drum and better parts this time

[Dan75k20]

[Dan75k20]

So finally its time i r&r my transmission truck finally stopped moving

[Dan75k20]

Lol at least i have reverse to back it into the shop

[VileZambonie]

Sounds like they are making excuses. Your tire size and weight of the truck should hardly be an issue for a thoroughly rebuilt TH350. Why don't they just send you an exchange unit?

[Dan75k20]

So heres the monster in a bucket and my craigslist 40 dollar trans ready to go in