DRR Trophy
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on my car, swapping from a 4.10 to a 4.30 gear set was worth about a 200rpm difference in the traps
06 Mike Bos 557 BBF 7.992@167.94
Big Thanks To Chris Corey
aka TopSportsman 916
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| Posts: 198 | Location: Chesapeake VA | Registered: July 08, 2008 |  |
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DRR S/Pro
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Last car 106 rollout tire, 410 gear 16x16 rims rpm 7200 This car 106 rollout, 430 gear 16x16 beadlocks .. 7100 same drivetrains David Lanning  Nyes Automotive 765-288-4326 Fleenor Racing Powerglides 419-280-1406 www.apdracing.com |
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| Posts: 5463 | Location: Bronson,MI | Registered: November 17, 2001 | |
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DRR S/Pro
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I am baffeled as much as many are with the rpm doing what they did car to car with same setup. has to be beadlocks but why I am not sure David Lanning Nyes Automotive 765-288-4326 Fleenor Racing Powerglides 419-280-1406 www.apdracing.com |
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| Posts: 5463 | Location: Bronson,MI | Registered: November 17, 2001 | |
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DRR Sportsman
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quote: Originally posted by Hammertime:
I am baffeled as much as many are with the rpm doing what they did car to car with same setup. has to be beadlocks but why I am not sure
Is the new car slower in ET and MPH? |
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| Posts: 618 | Location: Harned KY USA | Registered: January 05, 2004 | |
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DRR S/Pro
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Faster by 5 David Lanning Nyes Automotive 765-288-4326 Fleenor Racing Powerglides 419-280-1406 www.apdracing.com |
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| Posts: 5463 | Location: Bronson,MI | Registered: November 17, 2001 | |
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DRR S/Pro
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It sure didnt seem like it was spinning, and video never showed it. A few have just said its the weight of the beadlocks but I find that strange. David Lanning Nyes Automotive 765-288-4326 Fleenor Racing Powerglides 419-280-1406 www.apdracing.com |
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| Posts: 5463 | Location: Bronson,MI | Registered: November 17, 2001 | |
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DRR Sportsman
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quote: Originally posted by Hammertime:
Faster by 5
Wow!!!Thats kinda crazy |
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| Posts: 618 | Location: Harned KY USA | Registered: January 05, 2004 | |
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DRR Pro
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quote: Originally posted by 70.5camaro:
I have a 4 link mullis with 33.5-17-16's with a 4.10 rear that just broke, my question is how much RPM some are turning in the quarter with a 4.30??? Ran 165 on the stop two weeks ago, probably run 170 next year, just dont want to turn a lot of trap RPM. Thanks
According to my calculations, if the converter slippage remains the same, you'll gain 550-570rpm with the two changes of 4.30 gears and 5 more mph. If the converter locks up better with the 4.30 gears and more mph you may gain less than that... something like 400ish Scott 2007 & 2009 Gateway S/Pro Champion 420 SBC 1.092, 3.124, 4.860@140.5
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| Posts: 2164 | Location: Illinois | Registered: August 20, 2000 | |
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DRR S/Pro
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quote: Originally posted by sc4087:
Hammertime, By switching to the 4.30 gear you are probably working the converter harder and actually made it more effecient. Seen it before where a 4.30 gear actually helps slippage % of converter.
Very well could be ... I have a very loose spragless behind it David Lanning Nyes Automotive 765-288-4326 Fleenor Racing Powerglides 419-280-1406 www.apdracing.com |
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| Posts: 5463 | Location: Bronson,MI | Registered: November 17, 2001 | |
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DRR Sportsman
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quote: Originally posted by sc4087:
Hammertime, By switching to the 4.30 gear you are probably working the converter harder and actually made it more effecient. Seen it before where a 4.30 gear actually helps slippage % of converter.
Ditto only 100rpm diff for me between the two. ..................Tyster CLICK PICTURES BELOW!!  |
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| Posts: 1460 | Location: Fort Wayne, In | Registered: January 26, 2004 | |
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