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6.20 rear end 60fts #1068722 09/04/11 12:09 AM 09/04/11 12:09 AM
Joined: Jun 2009 Posts: 644 Minnesota Barnstorm OP mopar
Barnstorm OP mopar Joined: Jun 2009 Posts: 644 Minnesota	Some of the SS/AH cars at Indy are running a 6.20 axle gear!! Run the Wallace Calculator and it's close to 160 mph @10,000 rpm...what would our cars run with a 6.20 gear...nice 60fts? 6809709-102_2633.JPG (146 downloads) The little old lady from Pasadena is back!

Re: 6.20 rear end 60fts [Re: Barnstorm] #1068723 09/04/11 12:21 AM 09/04/11 12:21 AM
Joined: Nov 2004 Posts: 4,330 Lynchburg, VA Leon441 master
Leon441 master Joined: Nov 2004 Posts: 4,330 Lynchburg, VA	I put a 6.17 gear in my car last year. It fealt like it left harder but the 60 ft didn't show any benefits. It buzzed pretty hard on the other end. Wouldn't look for any increase just because you added some gear ratio. It all comes down to wheel speed and how long your converter is in stall. Leon Career best 8.02 @ 169 at 3050# and 10" tires small block power.

Re: 6.20 rear end 60fts [Re: Barnstorm] #1068724 09/04/11 10:33 AM 09/04/11 10:33 AM
Joined: Jan 2003 Posts: 10,039 MN J JERICOGTX I Live Here
JERICOGTX I Live Here J Joined: Jan 2003 Posts: 10,039 MN	I would guess it's because of the very narrow powerband of the AH engines, it's to keep them near the peak at all times. Would be interesting to know the first gear ratios for the stick cars. Maybe in the 2.70-80 range? Jeff 69 GTX 68 Road Runner

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