beatngu Posted October 24, 2005 Share Posted October 24, 2005 with a 20 speed quadruplex trns. how fast might one go? or does engine size screw with the question some...oh and its in a tandem Quote Link to comment https://www.bigmacktrucks.com/topic/465-how-fast-will-one-go/ Share on other sites More sharing options...
Lmackattack Posted October 24, 2005 Share Posted October 24, 2005 62-65MPH if your lucky but we need to know more about your truckrear end ratiofinal drive ratio and tire size Quote Link to comment https://www.bigmacktrucks.com/topic/465-how-fast-will-one-go/#findComment-2077 Share on other sites More sharing options...
Freightrain Posted October 24, 2005 Share Posted October 24, 2005 Tires and gearing have everything to do with it.I would bet Trent has it nailed if it's all original. Most of these truck weren't geared to run much faster than that back then. Most guys set them up better now to keep up with traffic. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/465-how-fast-will-one-go/#findComment-2082 Share on other sites More sharing options...
Packer Posted October 25, 2005 Share Posted October 25, 2005 The "B63" that I learned to drive was geared at 62mph @2100 rpmThe gearing was such that you could pull any hill in 2direct, and if hot 2 low,Any help? Packer Quote Keep a clutchin' Link to comment https://www.bigmacktrucks.com/topic/465-how-fast-will-one-go/#findComment-2092 Share on other sites More sharing options...
Superdog Posted October 25, 2005 Share Posted October 25, 2005 My B-83SX wrecker will do over 100 mph,but it ain't quite stock.It has 4:17's and 11R24.5 rubber. Quote Link to comment https://www.bigmacktrucks.com/topic/465-how-fast-will-one-go/#findComment-2093 Share on other sites More sharing options...
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