2G Input shaft spline - RWD Conversion

[gabytech]

I need the input shaft spline teeth number of the FM5M31 & FM5M33...

 

[Lofty]

May I ask why?

I can go do a count on those for you, but is there a specific reason you need the number of splines?

 

[19Eclipse90]

There are 20 spline teeth on the input shaft. Save you the trouble, Scott.

 

[Lofty]

^^^^

This guy.

 

[gabytech]

Im going to convert my 2g GST FWD to RWD, and probably going to use a g-force transmission, I need to know the input spline before I give g-force a call and see what are my options in terms of transmission choice..

and yes, I already know I can use a powerglide automatic trans, which I don't want an automatic trans, and also can use the toyota w58 and R154 trans, but since the horsepower range will be around 500-600, I don't want to break a OEM trans every few months. I want to spend the money the right way, with a trans that will hold the power and the grip...

 

[Lofty]

R154 will hold down that horsepower I'm more than sure. Parts are so cheap for those too.

But I don't think the W58 will, I'm building a car using that transmission right now.





But if you're going to spend the money, then get the G-force.

 

[gabytech]

I've already got a few bucks saved for the project RWD, and going to start buying parts as soon as next week, going to go with a Currie Track 9 housing kit, Competition Engineering Magnum 4-link kit, Strange Engineering Pro Iron center section, Strange Engineering Pro Race axle package, Strange Engineering 3" chrome-moly driveshaft, Strange Engineering coilovers, Wilwood Dynalite Pro Series rear brake kit, Summit Racing Fast Five 15x7 front & 15x10 rear wheels, BfGoodrich g-Force Sport 205/50R15 front & BFGoodrich g-Force T/A drag radial 325/50-15 rear tires, Magnus V3 RWD intake manifold, Buschur Racing water pump block off plate, 4G63 RWD conversion motor mounts, C&R radiator with electric water pump, top-mount header, Turbonetics GTK-500 turbo, just to name a few. But transmission wise I still havent decided which trans to go with. I'm going to contact g-force tomorrow and see if I can use either the street 5 speed or the GF-5R 5 speed, the Toyota R154 is my next option in transmission choice.

Might use a Ford Explorer 8.8 rear end, the same rear end gastrocker is using in his awd 2g, to keep the initial cost of the project lower. The front crossmember will be a custom tubular crossmember, similiar to eagletalon.com 1g rwd talon.

Just got off the phone with g-force transmissions. Here's the scenario, using billhousing custom bellhousing the g-force transmission can be adapted using an adapter plate to the 4G63T engine. The Street 5-speed trans is rated at 600hp for a price of $2,556, which aint bad at all considering oem toyota r154 used trans go for around $800 and wont handle the hp the g-force street 5speed trans hold. The G-force GF-5R clucth assisted dog ring trans is rated at 1300hp for a price of $5,850. Going to go with the street 5speed since the rwd 2G Eclipse will be a street/track car and the hp range will be around 500-600.

 

[twicks69]

If you are running a R154, then you want the spline count and diameter for the R154. The DSM transmissions are 7/8" 20-spline.

The r154 is 1-1/8" 21-spline. It is also a pull type clutch. You would need a custom flywheel made to run it.

The W58 transmission is also 1-1/8" 21-spline but uses a push type clutch with a smaller diameter clutch disk and totally different pressure plate. The transmission is also set up for a pilot bearing in the crank flange.

If you go GForce, it doesn't matter what spline count or diameter input shaft you run; you can simply get a clutch disk made for it and whatever pressure plate fits, and make a custom flywheel and ring gear since you would likely have a different starter placement.

Any way you look at it, you will need a custom bellhousing adaptor, and custom flywheel/ring gear depending on clutch used and placement of starter.

If you are using a GForce based off the Tremec T5 (world class or standard) which normally uses a 1-1/8" x 10-spline stock input shaft (stock) or a 1-5/32" x 26-spline input shaft (upgrade), then you can simply do a multi-disk clutch with either style disk pack in something like a 7.25" twin or triple disk and then make the flywheel to attach the clutch assembly to, and run a hydraulic TOB setup.

Link to T5 hydraulic TOB conversion parts (Tilton TOB)