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Has anyone done the GM Automatic Tranny


iGSR_VR
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Pm Bill Hitchner (sp), He makes adaptor plates for GM trannys.

4cylinderfury runs a turbo 350 I think, I've always thought a 700r would be a good tranny for our cars.

I'm just worried about the size differance.

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This is the GM powerglide/ TH 350/ 400 adapter worksheet, its been in production many years the plate will share one design, the difference will be in how its drilled, I been bouncing around about the thickness, also i tried some new ideas on the starter location.

I finally settled on the starter location and thickness is still up to the coupler I want to use, the problem I am wrestling with is the crankshaft bolts.

the original M/T crankshaft bolts have a bigger head for more clamping force but they are designed to work with a flywheel 10mm thick, the auto trans bolts are designed to work with a flywheel 3mm thick, If I swap the auto trans bolts for the M/T bolts I will gain in strength but the fingers i used to locate the center of the torque converter will be much thinner, however the thicker coupler will force the trans to be mounted an extra 1/4 back with the adaptor plate

so i been bouncing back and forth

 

 

the original auto trans flex plate was 3 mm thick, my first couplers were 7 mm thick under the bolt head

http://www.billsautofab.com/images/updateGM16.jpg http://www.billsautofab.com/images/updateGM17.jpg

http://www.billsautofab.com/images/updateGM22.jpg

I keep working out details in the new plate, I want it strong but light

http://www.billsautofab.com/images/updateGM1.jpg http://www.billsautofab.com/images/updateGM3.jpg

http://www.billsautofab.com/images/updateGM4.jpg http://www.billsautofab.com/images/updateGM5.jpg

This is my new coupler , it has 10 mm thick flywheel bolt landings and uses the Manual trans bolts

http://www.billsautofab.com/images/updateGM6.jpg

The flywheel fits okay but the starter depth will need adjustment

http://www.billsautofab.com/images/updateGM8.jpg

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these are the first heat treated couplers

http://www.billsautofab.com/images/crankshaftcoupler19.jpg http://www.billsautofab.com/images/crankshaftcoupler20.jpg I added some side mounting motor mounts in my latest designs, for guys that wanted a mid plate

http://www.billsautofab.com/images/GMtransadaptor19.jpg http://www.billsautofab.com/images/GMtransadaptor20.jpg

http://www.billsautofab.com/images/GMtransadaptor21.jpg http://www.billsautofab.com/images/GMtransadaptor22.jpg

http://www.billsautofab.com/images/GMtransadaptor23.jpg http://www.billsautofab.com/images/GMtransadaptor24.jpg

http://www.billsautofab.com/images/GMtransadaptor25.jpg http://www.billsautofab.com/images/GMtransadaptor26.jpg

http://www.billsautofab.com/images/GMtransadaptor27.jpg

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This is the work detail to make the Toyota reduction gear starter to work http://www.billsautofab.com/images/startergear3.jpg http://www.billsautofab.com/images/startergear4.jpg

http://www.billsautofab.com/images/startergear5.jpg http://www.billsautofab.com/images/startergear6.jpg

http://www.billsautofab.com/images/startergear7.jpg http://www.billsautofab.com/images/startergear8.jpg

http://www.billsautofab.com/images/startergear10.jpg http://www.billsautofab.com/images/startergear11.jpg http://www.billsautofab.com/images/startergear12.jpg http://www.billsautofab.com/images/startergear13.jpg

http://www.billsautofab.com/images/startergear14.jpg http://www.billsautofab.com/images/startergear16.jpg

I am going to order the 604 from powermaster

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