4 Vs 5

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wheelman21

Mopar noob
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Ok guys I need some expert input. I currently have a 340 with a 727 and 391 rear gears. Right now I feel like my car isn't very useful since I can't really put it on the highway without feeling like I'm bleeding the life out of it. So I am converting to a manual. I've made up my mind! I've been set on a 5 speed Tremek. The thing is it seems like the cheapest I've found is around $5,500. That's a big chunk of change for a car I paid $6k for. I think I can do a 4 speed for about half the price. So my question is, is 1 gear really worth that much? How much of a difference would it make vs the 5 speed? Would the 4 speed be a big improvement over the 3 speed or do I really need a 5 speed to be able to put it on the highway? Thanks guys.
 
I know changing the gear set would be the easiest solution, but I would lose a lot of my off the line power. What about using a 4 speed overdrive?
 
Another possibility is getting a Gearvendors. Still not cheap at $2800, but then you only have a 0.78:1 OD gear. Which would be plenty for me but not sure about your setup.
Then add in another $100 or so to shorten and balance the driveshaft.
Unless you have a good buddy that'll do it for you for dirt cheap.
 
Passon Performance sells a four speed overdrive that they claim is as strong as a standard 4 speed.
 
833OD is 1:1 in 3rd, same as an auto (without the torque multiplication of a convertor), OD is .073:1. Tremac 5th (OD) is close: .64,.68, or .82 OD. Sounds like alot of money to get an extra gear between the OD's 2 and 3rd.
OD 3.09 1.67 1.00 .73
5sp. 2.87 1.89 1.28 1.00 .82

Doug Nash 4+3 is basically a T-10 with a hydro-electric activated overdrive on the end. Nice idea, crappy OD.
 
wheelman21 said:
How strong is a 4 speed OD?
Click to expand...

It's strong enough to handle a 340 on the street w/street tires. The OD833 isn't as much to fun to drive as the regular 833, the wide gear spread in the OD box makes shifting kinda slow but the OD will make your wallet happy, they generally don't cost much to buy and they'll save you money in the long run with better gas mileage.
 
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