cliffdiver86

Does anyone make a TH-400 swap kit?

1961ba427

iTrader: (26)

No, but Spohn makes a spacer to bolt between the stock T56 crossmember and the transmission mount so a TH400 will bolt up at the right driveline angle.

cliffdiver86

Wishful thinking haha. Thanks ill have to check it out

Beeler422

iTrader: (3)

I'm not sure about the TH350, but the fittings on the TH400 are a 1/4 in.-18 NPSM; not NPT. You can use an NPT but you run the risk of cracking the case. NPT is tapered where NPSM is not.

john.s

iTrader: (6)

Can't seem to really find a straight forward answer anywhere else but what about the throttle kick down on the TH350? Is it necessary?

93Z2871805

iTrader: (5)

No it's not, your trans just wont down-shift automatically, you'll have to manually pull it down a gear for passing.

john.s

iTrader: (6)

Ok thanks

N2Ojunky

I have a 99 Z28 converted from a M6 to a th350 what do I need to get the speedometer and reverse lights working?

Beave

Thanks for posting this info. Put a PTC th350 and converter in my car yesterday. Used a UMI crossmember and madman dipstick and everything else went together perfectly. Used the free speedo mod and it works perfect.

1990gtcory

Have 6.0 flex plate turbo 400 what spacer and bolts needed please and thanks gm stuff

93Z2871805

iTrader: (5)

Spacer - 12563532
Bolts - 19257940

1961ba427

iTrader: (26)

Kenny, I can't remember whether the spacer goes between the flywheel and crank or between the flywheel and convertor??

I think it's between the flywheel and crank, but wouldn't that cause an issue with flywheel to starter engagement?

93Z2871805

iTrader: (5)

If it's a flat flexplate it goes between the flexplate and the converter, if it's a curved flexplate it goes between the flexplate and the crank.

The spur gear is pretty long (probably 1"), you're spacing it .400" to the rear, so if the OEM spot was towards the front of the gear (which I believe it is), then you'd just be shifting it to the rearmost part of the gear. I had to shim my starter ~ .060" FWIW (I know it's not shimming in the same direction you're talking about, I'm just throwing it out there, lol).

1961ba427

iTrader: (26)

Thank you

93Z2871805

iTrader: (5)

No prob bud

93v8clone

Only dipstick I can find is a td350400fm36 , not a td3350400fm36 like the thread states in the dipstick number . Is the number I found correct ?

93Z2871805

iTrader: (5)

Yes. It was just a typo, someone hit "3" twice.

You want TD350400FM36 if you don't need a locking type, and 1211144-36 if you need a locking style.

(SS)

iTrader: (1)

Great info

I'm just getting started on my first m6 to th350 swap.I may have missed it,but i didn't see any tq converter bolt part number Preferably ARP.Let me know if i'm missing anything.

-Here is my parts list sofar-
ARP 244-2901 - ARP Pro Series Flexplate Bolt Kits
TCI Auto 399753 - TCI Flexplates
B&M 80688 - B&M QuickSilver Shifters
B&M 70274 - B&M SuperCooler Oil Coolers
Madman dipstic

-This is for braided steel lines and fittings-
Russell Performance 640520 - Russell Transmission Cooler Line Fittings
Aeroquip FCA0620 - Aeroquip AQP Stainless Steel Braided Hose
Aeroquip FBM5013 - Aeroquip AN to NPT Adapter Fittings
Aeroquip FBM4422 - Aeroquip Reusable Hose Ends
Aeroquip FBM4412 - Aeroquip Reusable Hose Ends

93Z2871805

iTrader: (5)

Those ARP bolts will not work if you are planning to use a converter that has a standard SBC/BBC pilot as you'll need to use a crank spacer.

EDIT: I see that TCI flexplate comes with a spacer, so the ARP 244-2901 bolts wont work.

(SS)

iTrader: (1)

What are the correct bolts?