SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: Chart of Pulley Sizes vs Cfm from SL55

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Old 04-14-2019, 09:23 PM
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Chart of Pulley Sizes vs Cfm from SL55

About a year ago I had found a chart online that showed what cfm (compared to stock) that could be expected from a SL55 with various pulley combinations. I printed it out and now I can't find the online source or the print out. If anyone can help I would certainly appreciate it.
Old 04-15-2019, 09:07 AM
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Old 04-15-2019, 10:21 AM
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Nor Cal: Thanks you for the chart. It's better than what I had last year. I so very much appreciate your help.
Old 04-21-2019, 04:55 PM
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Is the stock bottom pulley 168??
Old 04-21-2019, 06:27 PM
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I think that is correct.
Old 04-22-2019, 10:38 AM
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Stock bottom pulley is 154, stock upper pulley is 90
Old 04-22-2019, 10:58 AM
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NorCal: Right you are. I was thinking of my SL55 AMG RENNtech, which is 168 crank and 83 SC.
Old 04-22-2019, 12:31 PM
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I ran 77mm upper and 195mm lower at one point but for day to day, liked the 172mm lower/ 77 upper combo with headers tune, injectors, cooling mods and UPD cold air intake. HP matched torque converter really made things fun.

Originally Posted by Nor Cal SL55
Stock bottom pulley is 154, stock upper pulley is 90
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