love macks Posted September 23, 2017 Share Posted September 23, 2017 I have purchased a rolling chassis Flindstone model Mack. The diff ratio is stamped 7.00 on the id plate. Are these Diffs worth much?? also the brake boosters look more like canisters as opposed to the normal 30/30 style brake booster, con anyone help identify these for me? thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/51096-diff-ratio/ Share on other sites More sharing options...
j hancock Posted September 23, 2017 Share Posted September 23, 2017 A picture of the brake chamber would be helpful to see what you have. Low gears like that are not really sought after. Vlad was looking for around 6.5 ratio but 7.00 may interest him. 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/51096-diff-ratio/#findComment-380464 Share on other sites More sharing options...
mrgumby Posted September 23, 2017 Share Posted September 23, 2017 (edited) does it look like this Edited September 23, 2017 by mrgumby Quote Link to comment https://www.bigmacktrucks.com/topic/51096-diff-ratio/#findComment-380465 Share on other sites More sharing options...
david wild Posted September 24, 2017 Share Posted September 24, 2017 roto chamber 1 Quote Link to comment https://www.bigmacktrucks.com/topic/51096-diff-ratio/#findComment-380479 Share on other sites More sharing options...
h67st Posted September 24, 2017 Share Posted September 24, 2017 My '60 H67ST has that style chamber, and there isn't room to replace them with #30 chambers (would hit the tires). It has a camelback tandem. Can you get maxi brakes that style? Quote Link to comment https://www.bigmacktrucks.com/topic/51096-diff-ratio/#findComment-380483 Share on other sites More sharing options...
Vladislav Posted October 2, 2017 Share Posted October 2, 2017 I doubt on much worth of 7.00 carriers. The most trucks running commercially seldon use lower than 5.73 with 5-6-7-8 speed tranny's (0.6 OD) or 5.02 and much faster with muli speed transmissions on the highway rigs. As for my need my original carriers have too low bull set of geras. And I can not install them faster ones from more modern CRD92/93. Can play with top (bewel) gear sets only. Or I could be happy finding complete diffs off a L-model (old 10 bolt mounting pattern) with a ratio of around 6.00. But they seem rare roaming around a hobby market. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/51096-diff-ratio/#findComment-381391 Share on other sites More sharing options...
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