b00sted

iTrader: (7)

BMR makes the trans crossmember with the adjsutable tq. arm mount. They say you can use the stock arm but you need to use I think a poly bushing. I paid 266 shipped to my door for the th350 xmember and it was a great quality piece.

chris93266

iTrader: (5)

yank has them too 220 shipped

BadAssFast

iTrader: (2)

I own a BMR Trak Pak but I was concerned about losing even more under car clearance so I bought the BMR TH400 trans mount with mount for std length (full length) torque arm and a full length adjustable BMR torque arm. (One day after I sold my other one thinking the Trak Pak was being installed. lol) Also, I am able to use the BMR drive shaft safety loop that bolts in where the cross brace was.

I'll note that the better 60s will probably come with a shorter arm.

My general feeling is that the short arm that does not require a full width cross member (like UMI, a company I like just fine usually) is substantially weaker using only the stock drilled cross member mount holes. This might help answer you question but sort of the . My .02. I like the full length adj BMR and tranny mount alot.

lethal93ta

if you have a spohn body mount arm already you can use a BMR trans mount or modify a M6 mount atleast on LT1 cars you cna use a M6 mount with a spohn spacer block I dont know about LS1 cars if there the same or not

LT1 BMR TH400 mount TCC003
LT1 BMR TH350/powerglide TCC004
LS1 BMR TH400 mount TCC001
LS1 BMR TH350/powerglide TCC002

DERTY

You can use the M6 mount with a spacer on a LS1 car as well.

BTLFEDSS

iTrader: (12)

I am using a A4 shifter with RMVB but i modified the gat on the shifter to work with it
BTLFEDSS

98turbls1

iTrader: (17)

Well if you're not going to use your tranny just because of shifter issues then I would just swap shifters... I'd rather havea awesome rearend and have to change out the shifter than to have a stock shifted FMVB because of convenience...

LilSlo1

iTrader: (3)

Bell housing ??

The Th 400 does not have a removable bell housing. Its parts of the transmission case.

DanZ28

iTrader: (5)

You can put an J.W. Performance Ultra-Bell Bellhousing on your TH400 (what I have). The original bellhousing gets machined off to install this one. It's SFI approved and yes, it is much stronger than stock. http://www.jegs.com/webapp/wcs/store...48597_-1_76226

chris93266

iTrader: (5)

I just finished my th350 swap. A few mistakes I made that I would like to warn others about are: th400 crossmember will NOT fit a th350, Yank does not make a th350 crossmember(they send you a 4l60 crossmember with an extension which i did not like), transmission lines do not interchange, I had to drill my flexplate out to 3/4" holes to fit the converter, & MADMAN dipstick did not work for me( it was way too short i think they sent the wrong one).

chris93266

iTrader: (5)

do you have an ls1 or an lt1?

does it vibrate in neutral/park or just when driving?

maybe your lines are plugged/kinked somewhere. did you run fluid or breathe through them before installation?

1996z28

iTrader: (13)

It is a LT1. It vibrates in park, I never tried it in neutral. And also while driving.

All my lines are going staight to the coolers, no kinks. And their all brand new line and brand new coolers. I don't knwo how they could get clogged up. Thanks very much.

lethal93ta

what flex plate did you get? you need an external balance one for a stock motor, unless you rebuilt it had had everything 0 balanced.

chris93266

iTrader: (5)

when you started your car for the first time with this trans, did you put it in reverse to pump the fluid through the filter first? if not, you may have plugged something up with debris that might have been in from the rebuild.

blkbird_WS-6

iTrader: (14)

Yes. That is correct.

chris93266

iTrader: (5)

i just got some dyno numbers after my swap. i lost 50rwhp. check out my thread here https://ls1tech.com/forums/dynamometer-results-comparisons/688018-50rwhp-loss-after-4l65-th350-swap.html

BIRDONNOS

iTrader: (3)

ok to add to the list incase anyone needs it, i have a th400 with the 4 inch tailshaft and a ford 9 inch rearend, the driveshaft measurement from center of the transmission yoke to the center u-joint on the rear end was 45 1/4, and the wires to the speed sensor that you need to cut are purple and yellow on the black connector, these are the wires you splice the connector into if you are switching from a m6. hope this helps

KC Henry

I am swapping a stock ( until I have the money to afford Mods ) 1998 LS1 into my Caprice, and reusing my TH350 trans with its TH350 3800 Holeshot TQ Converter, and it seems to bolt up to my 98 LS1 Flexplate but it doesnt have the extended snout on the TQ Converter, I Have seen that other Members have bolted their TH350 TQ Conveters to the 98 Flexplate and somehow Not used "Spacers/Washers/Adapters"......so I have 3 questions:

1) How is this done without having the snout of the Converter resting in the piolet housing of the Crank for the required support ?

2) If members are using the TQ Converter bolted the Flexplate without being correctly/properly supported in the piolet houseing, at what RPM does the flexplate start to flex/stress causing a Driveline vibration ?

3) Are there any members that have used "Spacers/Washers/Adapters" on this type of swap so that the TQ Converter can be properly/correctly supported as to not allow driveline vibrations? If so what is the PART NUMBERS /WEBSITE you used to get the "Spacers/Washers/Adapters" ?

Thanks for helping a noobie like me.

deeloc1

iTrader: (20)

$138.49 before shipping from gmparts direct for flywheel and spacer...the bolts are around 5bucksi think...this looks like the cheapest route. If you are patient you will find one cheaper than that with the spacer and bolts in the for sale section from time to time.

dlove

iTrader: (23)

here is a list of what tranny came in what, incase you are looking for a 350/400

http://www.drivetrain.com/autotranscrossref.html