Hello, I'm new here and I have a question y'all might be able to answer. The long story short is I have a M137 5.8 V12 from an S600 going in a '73 Corvette. It's getting Individual throttle bodies and headers, so of course I want a manual, so I went out searching expecting to build an adapter plate, exc. However, I was recommended to look into the Crossfire 6 speed, because it might work. The research I've done shows no answer, so here's my logic.

The crossfire manual transmission bolts directly to the M113. The M113's Automatic was the same 5 speed as used in the S600, so... Maybe? The flywheel bolt pattern looks the same as on the flex plate of the S600, and the 60-2 tooth wheel and starter engagement look the same. But I'm not completely sure. I'm not worried about computers, which seem to be the big hurdle, because with ITB's and everything I'm running an aftermarket ECU. Also not worried about strength for these early stages, If it works well I can always pull it and beef something up.


Does anyone have an idea? Or if someone has a junk flywheel that they would be willing to measure, or a bellhousing they would be willing to measure that would be great.

If it doesn't bolt up, I'm just going back to my old plan of building an adapter. But if I can just bolt something up, It would save a few days in the shop.

Thanks!

 

Ah, this is your project

Don't use the nsg370, to low torque rating.

I will sell you my car to put that engine in + all of the eextras going with it.
Somebody put a v12 in crossfire.

There is a company that makes a single mass aluminium flywheel and adapter plate,, clutch etc to mate a BMW 6 speed trans to a mb m113 block($1,200 ish i think, cheaper then replacing with a dual mass steel fluwheel and. Kjtch), can't remember specs off my head atm, but 480bft lbs torque rating ++++, especially with the diesel trans, many in bmw swears they hold up more,, and i have seen them on places like marketplace around $500

Any ideas on your tuning ???
That is your biggest problem.

 

Yep, this is it hah. Yeah, I'm worried about the transmission but we will see. For right now it's something that bolts up for cheap. I've seen the 6 speed from the BMW, and I know it can take the torque, but it was actually pretty difficult to find one.

Tuning is easy, I usually run a MS3 Pro on projects like this.

 

o and grats on getting ahold of that engine, that would be fun project.
But with only 280 ft lbs of torque limit of the nsg370, and would have to upgrade later anyway, and the trans sizing is different.
I tried for years to get someone's old junk flywheel but I never could (talked with, before/after they took apart, and/or they took to shop)

I dislike a dual mass flywheel, it hates quick shifts, and quick downshifting hahaha, nope
daily driver trans and flywheel, not a lay into it trans and flywheel
PNC make the adapter and single mass flywheel

This is the same trans that is in the 6 soeed jeep wranglers, but different spline input shaft, and probably bellowing bokt pattern.

I did a single piece aluminium driveshaft in mine.

 

Surfing youtube I found a shop (Canada) working on an adapter plate to mate up a 350Z 6 speed manual transmission to a M113. Apparently the 350Z transmission has a huge aftermarket and can be built to withstand whatever you want to throw at it.

Les

 

actually the crossfire 6 speed should be fine as far as holding up to horsepower if you go to the mercedes swap shop on Facebook there have been multiple 400hp m113 swaps to the nsg as well as the m113k