Hemi fourspeed overdrive

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morty318
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Hemi fourspeed overdrive

Post by morty318 » Sun Jan 01, 2017 7:57 pm

Hi guys, does anyone have any experience with the Passon hemi four speed overdrive?, or any overdrive systems for our cars?

71bird
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Re: Hemi fourspeed overdrive

Post by 71bird » Mon Jan 02, 2017 11:55 am

I have one in my car, and I love it. My rear is 3:54, so on the highway I can run as fast a I want without running the motor to death. Around town I usually leave it in 3rd just for cursing.
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71bird
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Re: Hemi fourspeed overdrive

Post by 71bird » Wed Jan 04, 2017 1:05 pm

Did that help any?
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morty318
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Re: Hemi fourspeed overdrive

Post by morty318 » Wed Jan 04, 2017 10:49 pm

So it still has 4 gears?, the 4th being an overdrive?

71bird
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Re: Hemi fourspeed overdrive

Post by 71bird » Wed Jan 04, 2017 11:06 pm

Private message sent.
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71bird
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Re: Hemi fourspeed overdrive

Post by 71bird » Thu Jan 05, 2017 9:10 pm

Give me a call at 423-312-6962 and I tell you about the O/D transmission.
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moparite
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Re: Hemi fourspeed overdrive

Post by moparite » Sat Jan 07, 2017 4:36 pm

How about posting it here for others to see! Seems Passon picked up where Keisler left off.

https://www.passonperformance.com/image ... 091109.pdf

https://www.passonperformance.com/

71bird
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Re: Hemi fourspeed overdrive

Post by 71bird » Sat Jan 07, 2017 6:16 pm

No, the Passon is completely different than any other OD trans on the market. It's not only different, it's soooo much better.
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road chicken
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Re: Hemi fourspeed overdrive

Post by road chicken » Thu Jan 26, 2017 7:11 pm

I wish Passion was an option back when I bought the Shaft Me Keisler Perfect Fit tremec. I'm still working on getting the drive angles right. Although I now know there is no alternative other than to cut the crossmember and build a custom trans mount. BTW Silver Sport transmissions is the old Keisler and they have NOT corrected the issue with the angles- or will tell you that some of these cars, ( for some mysterious reason) will not have the right angles. You have to chop your car up to find out. Sure had the right angles with the 4 speed. :roll:
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71bird
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My Cars: 69 Coronet 4 door.71 Road Runner. 71Dodge Tradesman 100 Van. 75 Dodge Dart. 95 Dodge Neon.
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Re: Hemi fourspeed overdrive

Post by 71bird » Thu Jan 26, 2017 7:18 pm

Even with a stock 4 speed, the angles could be off, that why there were special tools, and the service manual shows how to check, and correct it. And they sold shims for the job. I wonder if the OP ever decided what to do?
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road chicken
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Re: Hemi fourspeed overdrive

Post by road chicken » Thu Jan 26, 2017 10:14 pm

Oh sure. very few cars I've worked on didn't have the shims at the trans mount for setting the angles . Now it's much easier with digital levels it takes about 5 minutes to get the readings and figure out where the adjustments need to be made. not difficult at all, as long as there is room.
4th generation B bodys- there is no substitute.
68 383, Street Demon 750, RPM top end,484/284/108 poo poo cam "-5 spd 4:10 SG, 4whl disk, Helwig Anti-Sway, Poly bushings,Firm Feel Box, HD Linkage, 1" t-bars, 7 leafs Springs

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