3650 5th Gear

68cobra

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Does anyone know if someone out there is machining a usable 5th gear for the race track? .74 is all that is offered, unlike some other transmissions with a .82 or .84, the 3650 does not have that available. Changing from a stock .68 to a .74 isn't going to make a lot of difference. I want to make 5th gear a REAL gear & not a Highway/Overdrive Gear.

I'm afraid if I change my rear gear to a 4:10, 1st & 2nd will be useless.

I was told there was a company in Florida that machined gears but the guy who told me couldn't remember who it was??? (maybe in Sarasota)

Does anyone have expierence with the different gear ratio's?

Thanks!
 

US-1

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The Florida guy is Pro-Motion. You might also contact Bob Hanlon at Hanlon Motorsports.
 

rojizostang

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i can't imagine powershifting into 5th....the pro50 in my car is great 1 thru 4, but going into 5 is a different story

or are we not talking about drag racing?
 

68cobra

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The car has a 3:55 rear gear right now. I would like to swap for the 4:10 for acceleration off the corners, but that is going to limit my top speed unless 5th gear becomes usable with the 4:10/.74. Right now, with the 3:55, it won't pull itself out of a hole. It bogs-down.

I'm looking for someone who has a 4:10 that uses 5th gear to validate whether or not the car will continue to accelerate if 5th gear.

The application is for Road Racing.

Thanks!
 

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