Author Topic: 57/48  (Read 757 times)

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Offline Baddyna

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57/48
« on: February 09, 2018, 12:26:34 AM »
OK  Street Bob 2009 Low mileage   2-1 Big Radius, NESS A/C  Pover vision     Andrews 48 or 57?

Offline Frédéric CM

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Re: 57/48
« Reply #1 on: February 09, 2018, 05:55:28 AM »
How do you ride ?

Online Prostock

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Re: 57/48
« Reply #2 on: February 09, 2018, 08:55:48 AM »
48

Offline sfmichael

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Re: 57/48
« Reply #3 on: February 09, 2018, 02:04:38 PM »
48
Colorado Springs, CO.

Offline shawnt1966

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Re: 57/48
« Reply #4 on: February 09, 2018, 02:30:18 PM »
48 !

Offline Ohio HD

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Re: 57/48
« Reply #5 on: February 09, 2018, 03:45:22 PM »
48's, 57's are not a good fit for a stock 96" motor.
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Offline Deye76

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Re: 57/48
« Reply #6 on: February 09, 2018, 04:50:46 PM »
HD 255's for a 96". A  lot of take offs out there, very inexpensive.
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Offline 1FSTRK

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Re: 57/48
« Reply #7 on: February 10, 2018, 04:36:33 AM »
How do you ride ?

With that bike
2000-4000 rpm shift you are a 48 guy.
5500-6000 rpm shift you are a 57 guy.
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Offline GMR-PERFORMANCE

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Re: 57/48
« Reply #8 on: February 22, 2018, 09:37:26 AM »
Looking over the dyno sheets comparing curves the numbers on the 255 vs the 48 vs the 551 S&S cam ( I know you did not ask about it but is in that same selection)  Tq ranges from 97-101 and Hp is 80-84 as   So To me I still feel the take out 255 cam is a great  install for the 96 inch engine..  I did a same day back to back test on my own 96 years ago with the 255 vs the 48 . Extremely close with the 48 winning by less than 2-3 points across the board.. 

 So take that for what it is worth ..  I do not have or even think I have ever tuned a 96 with the 57  but getting older tend to forget things more often..  :hyst:
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Offline Scott P

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Re: 57/48
« Reply #9 on: February 23, 2018, 08:02:25 AM »
OK  Street Bob 2009 Low mileage   2-1 Big Radius, NESS A/C  Pover vision     Andrews 48 or 57?

48 or CR .570.
Otto Knowbetter sez, "Even a fish wouldn't get caught if he kept his mouth shut"