964 3.6L fit to a 915 trans

[Old ITW]

I am trying to fit a 3.6L 964 engine onto a 915 transmission to ultimately go into a 1978 coupe. The dual mass flywheel and pressure plate do not fit into the 915 bell housing. I'm searching for a flywheel/pressure plate combination that will fit.

Hopefully some folks on the forum have experience or knowledge of this being done.

Any comments and/or suggestions are much appreciated.

[Rodsrsr]

I believe Patrick Motorsports makes a flywheel combination that solves this problem.

[winders]

What are you using for an ECU? The 964 setup or something aftermarket? I ask because that might change what flywheel you might use.

This setup works well:

https://patrickmotorsports.com/collections/flywheel-and-clutch-packages/products/pkg91522536dmespclwpms

[Bill Verburg]

Originally Posted by Old ITW

I am trying to fit a 3.6L 964 engine onto a 915 transmission to ultimately go into a 1978 coupe. The dual mass flywheel and pressure plate do not fit into the 915 bell housing. I'm searching for a flywheel/pressure plate combination that will fit.

Hopefully some folks on the forum have experience or knowledge of this being done.

Any comments and/or suggestions are much appreciated.

964 uses a 240mm clutch and matching PP and fw

915 uses a 225mm clutch and matching PP and fw

these are not at all compatible

most use something like the Patrick conversion fly wheel and a stock sized 915 clutch & pp

[rswannabe]

I’ve run that Patrick flywheel and Sachs clutch combo on two different 3.6 based motors paired with 915 transmissions. Works perfectly, including holding up to a 370 HP 315 FtLb 3.8. Everything bolts together like its stock.

[3rd_gear_Ted]

Originally Posted by rswannabe

I’ve run that Patrick flywheel and Sachs clutch combo on two different 3.6 based motors paired with 915 transmissions. Works perfectly, including holding up to a 370 HP 315 FtLb 3.8. Everything bolts together like its stock.

+1 on the Patrick MS Flywheel & the Sachs Power Clutch combo
Slight clearance mod required to 915 bell housing for the 964 Crank Sensor.

[Old ITW]

I'm in contact with Patrick Motorsports.

Thank you all for your input ... much appreciated.

[winders]

The ring gear attaches to the clutch cover…the flywheel doesn’t really have anything to do with ring gear.