fullfuel01 Posted November 2, 2014 Share Posted November 2, 2014 I need a pinion for a the front diff of a 38K geared 3.65, 3,65 and 3,87 used the same ring/pinion. Coarse splang.missing one tooth on the pinion, I want to go cheap. It's just to walk the dog in the yard. Quote Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/ Share on other sites More sharing options...
Charlie Hatfield Posted November 4, 2014 Share Posted November 4, 2014 If your talking about the main ring & pinion, they are only available as a set, #24kh11013. A used pinion only may not match the ring gear and might be difficult to set up. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-265624 Share on other sites More sharing options...
terry Posted November 5, 2014 Share Posted November 5, 2014 If your talking about the main ring & pinion, they are only available as a set, #24kh11013. A used pinion only may not match the ring gear and might be difficult to set up.Sounds like it is only a yard truck. Quote Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-265661 Share on other sites More sharing options...
fullfuel01 Posted November 5, 2014 Author Share Posted November 5, 2014 I know they are matched to fit together. I don't use the truck, it's just to make it running, maybe use it as a yard spotter once a week. I hate to see good truck sit. Quote Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-265676 Share on other sites More sharing options...
rsb502 Posted November 9, 2014 Share Posted November 9, 2014 You got a set of 3.86/3.87 or 4.17 carriers? I have 3.65 and want to go a little lower. Quote "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin"If your gonna be STUPID, you gotta be TOUGH" "You cant always get what you want, but if you try sometimes you get what you need" Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-266109 Share on other sites More sharing options...
b61mack Posted November 10, 2014 Share Posted November 10, 2014 84superdog are the 3.65 too high geared, what overdrive are you running in the transmission. I have a set of 3.65s I thought about putting in a RS700L with an 865 and a 1070 ten speed overdrive on 22.5 hi tread tires, do you think it would be too high geared for bobtailing around. what would the top speed, would 4.17 or 3.86-3.87 be better. Quote Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-266186 Share on other sites More sharing options...
fullfuel01 Posted November 10, 2014 Author Share Posted November 10, 2014 84superdog,I do have multipe donor trucks with 4.17, problem is shipping. It will be cheaper for me to buy a PAI set for 580$ Quote Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-266189 Share on other sites More sharing options...
Vladislav Posted November 13, 2014 Share Posted November 13, 2014 Are those PAI sets work good? Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-266633 Share on other sites More sharing options...
fullfuel01 Posted November 13, 2014 Author Share Posted November 13, 2014 Yes, you can buy Excel parts too theyre cheaper but it shows. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-266636 Share on other sites More sharing options...
rsb502 Posted November 16, 2014 Share Posted November 16, 2014 B61, I run just over 1400 rpm at 70mph with an Eaton 9 spd (.73od) and 11R24.5 tires. I would like to get closer to 1500-1600 at 60-70 so I need to go to 3.86/87-4.17 but for your application with a mack 10 spd and 11 r22's you'd be about right to cruise around with 3.65 rears. 1 Quote "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin"If your gonna be STUPID, you gotta be TOUGH" "You cant always get what you want, but if you try sometimes you get what you need" Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-266910 Share on other sites More sharing options...
b61mack Posted November 17, 2014 Share Posted November 17, 2014 Thanks 84superdog I don't plan on hauling anything with it. I know you have the horsepower to pull 3.65s loaded but I didn't think the 865 would have the power to pull a load with 3.65s. does a 1070 10 speed Mack have the same overdrive that a Roadranger has. if I could find the bellhousing mounts for a westcoast R model or a Cruiseliner with a Roadranger I would like to put a 13 speed Roadranger in it, I have the bellhousing just need the bell mounts. Quote Link to comment https://www.bigmacktrucks.com/topic/37588-365-gear-set/#findComment-267008 Share on other sites More sharing options...
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