Help with th 200-4r in Mazda RX-7

[Insomniac21772]

To make a long story short... i have a 93' RX-7 with a 3 speed th350 tranny conversion. Drove AMAZING!!!! for awhile, transbrake iand ratchet shifting s def a new experience... recently the car began to shake like crazy. AFter taking it to KDR i found out the bell housing is cracked damaged fairly bad. Basically Im planning on buying a new tranny that will hopefully bolt up to the same custom adapter plate thats on there right now. I was told its a B.O.P. (Buick, olds. pontiac) th350.

I'm posting on this site because there seems to be a much greater knowledge of these trannys around here.

Questions:

- I want another gear for the highway, is a TH 200-4r A direct swap for a th-350?

- Do you recommend solid mounting the trans on the body? or should you use some kind of bushing?

-I have a custom built edge racing torque convertor.. Would the same one work for an th 200-4r?

- Does anyone have a built up Th 200-4r for sale for a decent price?
I've seen them on the internet for ~$1700 but I'm a current student and hope I can find one with at least a stronger casing for under $1000.



I want to get my car back moving ASAP!! so any help would be greatly appreciated!!




SUSPENSION
R1 Front Strut Tower Bar
Tokico Shocks (5-way Adjustable)
H&R Springs
RaceShop Roll Bar
Toe Links (not installed yet)
Trailing Arms (not installed yet)
RX7.com Diff Bushings
Diff. Brace
KAAZ 1.5 LSD

DRIVETRAIN
TH350 Transmission (fully built, w/ Trans Brake)
5500 Racing Torque Convertor (Edge Racing)
B&M Pro Ratchet

ENGINE

SS Downpipe
SS Midpipe
Racing Beat Catback
Pettit AST
Race/Street Port (HUGE)
88 High Compression Rotors
Racing Seals
180 Thermostat
Silicone Hose Replacement
XS Engineering T04E Single Turbo (Garrett)
Cast Ductile Iron Exhaust Manifold
HKS Racing Wastegate with 50mm valve
A'PEXi Twin Chamber Blow of Valve
K&N Air Filter
M2 Large (Racing) intercooler

FUEL SYSTEM
1600cc Secondary Injectors
KRD Fuel Rail
Supra TT Fuel Pump
Aeromotive FPR

[Cutlass]

TH350 to 2004R is a direct bolt in replacement. Same length transmission and same driveshaft. Trans mount is a little further back so you need to relocate the trans crossmember/trans mount.
Converter isn't the same.
And no you shouldn't solid mount the trans to the body. thats probably how you cracked your TH350

[Insomniac21772]

Thank you for the response!

I didn't solid mount the trans but the shop that did the conversion told me they did in order to keep the driveline from moving.

What type of mounting do I need then? Will the ability for it to move damage the spline gear that connects to the engine? (sry I dont know the correct terminology)

[Cutlass]

The engine and trans will be mounted solidly together and then mounted to the chassis with rubber mounts. The engine and trans will rock around as one piece.

[Insomniac21772]

Could the movement in the driveline damage the gears in my KaZZ 1.5 LSD?

Any other suggestions/tips on making this 350 to 2004r conversion work?

[Insomniac21772]

bump Please anything that will help me put a 2004r in my MAZDA!!