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Re: 572 wedge 63 Dodge rear gear ratio?
[Re: tboomer]
#985022
05/05/11 08:54 AM
05/05/11 08:54 AM
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Joined: Jan 2003
Posts: 10,081 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,081
Frostbitefalls MN (Rocky&Bullw...
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A 4.30 or even a 4.10 would be my choice for what you are doing. Your hp comes in very low I would bet? My main reason for being on the conservative side is all the torque you have and keeping the car hooked up on the launch. It will also keep the rpms down in the traps saving the life of the parts quite a bit. I run a 4.56 and a 33.6 tall tire going 150 mph, and cross at about 7300. A 4.30 would probably work as well as the 5.46 gears in my car.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: 572 wedge 63 Dodge rear gear ratio?
[Re: tboomer]
#985025
05/05/11 10:41 AM
05/05/11 10:41 AM
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Joined: Dec 2008
Posts: 603 Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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Quote:
Hey,Greg! Yupp..It comes in quick! I wonder how long the 4.10 Richmond street gears would live behind my tranny brake 512..I know 440Jim runs them but he footbrakes his car. My rear tires are 10.5 x31 M/Tws..After reading this,I remember that bad1970dust has 4.10s behind his 572"...Maybe that is something Rodney should think about? Great discussion here! Didn't mean to rob your thread,Rodney!!
You didn't rob a thing Tboomer I am {we are} real fortunate to have a place to ask questions and share good advice to keep these Mopars blasting down the track. We ordered up a new set of MT 32/14/15 stiff sidewall tires and tubes yesterday as well. I don't know if the wear holes on these tires are in the middle of the area of the tire but I couldn't find them. The outer holes were about 1/8 inch deep. $311. each plus tubes another $700.+ to add to the bill. The tires on the car now are 3+ years old. In 08 when we were considering the gear change we were having a difficult time finding anyone who had the 4:30 pro gear for the Dana 60 in stock. I'm going to start shopping for them again.
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Re: 572 wedge 63 Dodge rear gear ratio?
[Re: RAT PATROL]
#985028
05/07/11 12:21 PM
05/07/11 12:21 PM
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Joined: Dec 2008
Posts: 603 Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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The transmission is finished and the builder did a little more adjusting to the line pressure. He also drilled tapped and installed a plug on the case, in alignment with the pressure adjusting screw on the valve body. With this done I can hook up a pressure gauge to the hi side pressure with the transmission in gear check and adjust the line pressure to {crap can't remember?} good thing I wrote it down at the shop. We also purchased the EGT plus two channel and rpm monitor from Comutech to aid in jetting the cars I'm tuning. I also got the RaceBase electronic log book and spent a few hours inputting the data from last year and this year. This is a good thing IMO, at a glance with all of the runs in front of me on one page can see that the MPH was going away = transmission going away for quite some time. $50.00 well spent
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Re: 572 wedge 63 Dodge rear gear ratio?
[Re: steeldust]
#985031
05/15/11 10:05 AM
05/15/11 10:05 AM
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Joined: Dec 2008
Posts: 603 Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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yes Continental converters reworked it for us. good luck to you! It will be a couple weeks before we have the car at the track, right now it's wet wet wet . Probably just as well the car really needs some relays and this will give me a chance to fit the oil accumulator.
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