automatic trans.

[dima126]

i own a 96sc300 auto and i wanted to know is there any company that can build my auto to handle like 500 hp? and still shift smoothly?

[redspencer]

i own a 96sc300 auto and i wanted to know is there any company that can build my auto to handle like 500 hp? and still shift smoothly?
www.boostlogic.com

They build up a340 trannies there reliably.

[Jargon]

well powerhouseracing sells an upgraded clutch kit for the auto tranny, and I'm looking for a local shop that will use that kit, along with some other parts and upgrade my tranny and gauarantee it for around 600hp with still shifting smoothly:) I've gotten quotes for local shops saying about 1700 with parts included but im going to see if i get all the parts myself and a spare tranny and give it to them if it will be cheaper...so once i figure everything out ill post about it and what all to do.

[dima126]

what is an a340 trans.?

[conundrum07]

The NA tranny for the Supra/Lexus 2J cars. After 98 Ive heard the switched to the A341 (TT) auto tranny in the SC300. Im not sure about the other cars, but I would assume they made that change to them as well.

[Jargon]

yes its an a340

[champazn]

Boostlogic has a good tranny upgrade. But i their is this other company as well but i forget the name but the rebuilt was really cheap.. anyone know? i think they are located in North carolina or something.

[Jargon]

stc sells one, which was on sale for 1800 but the sale ended on july 31st... heres they're thread:

http://www.supraforums.com/forum/showthread.php?t=294037

[Bean]

http://www.boostlogic.com/parts_SC300.html

BoostLogic's is $1800 and it uses your stock torque converter, they have an upgraded torque converter for larger turbos for an additional $550.

It should handle upwards of 700hp I'd imagine.

[dima126]

does anyone here have the boostlogic one? how would you think it shifts? smooth as stocxk or firmer?

[Bean]

its going to have to be firmer, sloppy smooth shifts are part of what kills the transmission when making a lot of power... it wont be super stiff or anything; but it definitely wont be stock or anything

[dejacky]

someone on clublexus was very disappointed with the Boost Logic built NA transmission since it broke ONLY at 400rwhp :wtf: . Boost Logic doesn't offer warranty for their built na-t auto transmissions from my understanding.

[scnat]

not offering a warranty is not a big sales plus if you ask me. i like it when someone stands behind their product

[Bean]

someone on clublexus was very disappointed with the Boost Logic built NA transmission since it broke ONLY at 400rwhp :wtf: . Boost Logic doesn't offer warranty for their built na-t auto transmissions from my understanding.

Do what? There's a thread on Supraforums about this very thing... and it died because it was a prototype and ran higher line pressure than the final product...

boostlogic replaced it for FREE

Boostlogic most DEFINITELY offers a warranty with their transmissions

[modemthug]

http://www.boostlogic.com/parts_SC300.html

BoostLogic's is $1800 and it uses your stock torque converter, they have an upgraded torque converter for larger turbos for an additional $550.

It should handle upwards of 700hp I'd imagine.

Yeah, I've heard they hold up to 700 too..

[Brown Duckz]

someone on clublexus was very disappointed with the Boost Logic built NA transmission since it broke ONLY at 400rwhp :wtf: . Boost Logic doesn't offer warranty for their built na-t auto transmissions from my understanding.I've seen you claim this more than once and you were corrected more than once, call Boost Logic before you make that comment again.

[aliga]

gadgetsc (secretsc) bl tranny broke as well.

[SupaSupraSE]

Is there a warranty offered with the transmissions? If there is in fact no transmission, that'd def. be something id be very weary about purchasing. However, I doubt a high end company such as boost logic doesn't carry any type of buyback or refund.