A518 vs. 727 questions - TDR Roundtable

A518 vs. 727 questions

04-20-2005, 06:43 AM

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DPelletier

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Join Date: Oct 2001 Location: Kelowna, B.C. Posts: 1,756 Old Reader's Rigs Gallery

A518 vs. 727 questions

OK, I will admit that my question has nothing to do with a diesel pu, but it is a Dodge and I knew you guys could help. Apologies in advance.

I am thinking of putting an OD tranny in my '70 Super Bee so I can run 4:10's and still drive on the highway at a reasonable speed.

From what I can gather, the 727 and 518 are basically the same tranny except for the addition of the overdrive unit. I also understand that the bolt pattern is different betweent the Cummins and my RB, but gasser trucks (2wd, of course) should have a 518 that will bolt to my engine.
I can deal with a custom transmission mount and driveshaft, but hopefully the tranny won't require any modification of the driveshaft tunnel, because that is out of the question.

- What would I need to control the OD? a hidden switch perhaps?

- Weaknesses? If the tranny can stand up behind the Cummins, then it should be OK behind my 440 6 Pack. I estimate power to be approximately 450hp and 550 ft lbs.

- anyone know if I can use a regular 727 torque converter?

and lastly, any other thoughts or suggestions?

Thanks,
Dave

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