Passion Hemi OD

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Scoots340

Scoots340

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Looking for OD in my 70 Duster 340 3 speed manual. Wondering if anyone runs the Passion Hemi overdrive and what it took to install? Need one more gear that's not 1:1 since the interstate is 70 around here.
 
It's Passon, not Passion. And I hope you got a fat wallet and some patience...
 
Install should be pretty straight forward. its just a standard case with a different gear set in it.. Need the right bell housing, the proper shifter and proper spline clutch disc. Oh and the proper length drive shaft.
 
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We installed one of his 4 speed OD (not his new 5 speed) in a 73 Cuda with a 451 big block. Works great and with 3.73 gears the car gets 20 mpg (if you can keep your foot out of it.) You may be lucky and your 3 speed bell housing may have both patterns to bolt in the 4 speed.He is a good guy and easy to deal with and has done many transmissions for us over the last 20 years.
When it comes to 4-5-6 speed OD, our theory was you will run out of road before 5 or 6th gear is needed.Just a thought.
 
Darter6 said:
with a 451 big block. Works great and with 3.73 gears the car gets 20 mpg (if you can keep your foot out of it.) You may be lucky and your 3 speed bell housing may have both pa
Click to expand...

Like that will happen.
 
I have one in my 67 dart.
No differences in mounting than a stock 4 sp.
The 3-4 linkage is different then stock but comes with trans.
18 spline clutch is needed.

I run 4.30 gears and 28" tall tire. I cruise like 3.55s.

I debated the 5 speed and also the t56. I did not want to wait for the 5 speed and the t56 swap would of been a bit more $.
 
He will also build you a 23 spline if you want to use the clutch set up you have.
 
The Hemi Box,yes. His regular 833 Box OD has a 23 spline. That's what we used. Sorry I should have clarified better.
 
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