Four speed conversion kits - Passon or Brewer?

[Ghoste]

 

[Troy]

Lots of cars are running overdrive transmissions yet I don't see an overabundance of threads complaining about vibrations. I see them more from Gear Vendors conversions mainly because it changes the driveline angle. I'd assume a T-5 would (could) be similar. Considering how my car is built, there's very little of it that will act like it did when it was new.

Troy

[Cooter]

Just got my last issue of MM  mag rag, and they got their hands on one of these Pass on units.
I guess Pass on had to put the word out 4 years out to keep Kessler/American Pederson from doing their own version.
ok, bidness is bidness, but wonder when these will be out? A body was the first. I also remember thinking "damn thats alotta money for a Tremec that we broke it with a Fox body Mustang" when the problematic kits came out. Everybody jumped on em thinking they were gonna be awesome. Now look. Outta business because nobody wants a "hack job" conversion cause we have a bolt in deal now for same money....Wonder why the Tremec trans wasn't $5k? I think you can still get em for like $2300.00...

Thing is, I don't think it was the transmissions that vibrated cause I've run numerous versions in fox body's with no vibrations.
wonder what caused that trans to vibrate when installed in a different car? Things that make me go hmmmm.
wonder if those same Gremlins will plague this $5500.00 bolt in 5 speed......

I wonder why G.V. doesn't make a unit that will go behind a  4 speed long as we's dreamin.

[Troy]

Do you read? Just wondering. The Passon 5-speeds have been shipping for a few months. Trouble is, they have a small shop and a HUGE backlog. Additionally, they are NOT Tremec transmissions. Tremec cranks out millions of them so their "price per unit" will certainly be lower than a "boutique", custom built piece. The Passon trans is built to handle much more power AND be a direct "bolt-in" to a Mopar. The market gets a lot smaller in that case. Basic economics says they can't sell their product for the same price as a mass produced product. Not to mention, it's not even close to an "apples to apples" comparison. Do you also wonder why you can't buy a Viper for the same price as a Neon? And it's not $5,500 or $5,000 either.

According to Keisler, Tremec refused to sell them transmissions. Hard to sell product if you can't actually get parts. There was plenty of competition from other vendors selling T-5 swap kits but I seriously doubt the Passon unit put any sort of dent in their sales.

Troy

[Cooter]

Do you read? Just wondering. The Passon 5-speeds have been shipping for a few months.

I'm still working with the hooked on phonics. I ain't quite got the hang of it yet, but preciate the update.

[bill440rt]

I have zero vibration problems with my O.D. setup. This is with 3:91 gears. At 85mph on the freeway it is smooth as silk. We're talking a GM-based Keisler auto OD vs a 5-spd manual, though.
I think the vibration problem arises when retrofitting a kit in a car that may have a slight vibration problem to begin with. The OD just amplifies the problem because everything drivetrain related is spinning faster. A very slight vibration that is barely felt at 60mph now becomes a huge problem with the O.D.
The driveline angle as Troy mentioned is another factor.

[fy469rtse]

How do modern cars get around vibration issues, my friends car copied late model and incorporated CV joint to centre, this helped pinion angle problems ,

[Cooter]

How do modern cars get around vibration issues, my friends car copied late model and incorporated CV joint to centre, this helped pinion angle problems ,

Ever looked under one? There's little vibration dampers hanging off the front of diffs, rearends, etc.
some even have harmonic dampers on the front of driveshafts.