Hook n ladder 1 Posted February 9, 2015 Share Posted February 9, 2015 Some of you guys might remember a post of mine a few months back..chasing a vibration. ( arent we all chasing some type of vibration in our trucks?) Anyway, its come down to the trans/clutch. Theyre coming out this week. I bought the truck used in 2008 ( CH613 E7-427) Its had a few different transmissions before I bought it. Previous owner beat the hell out of it.I cant find the torque rating on the 427. im waiting on a spec sheet from a Mack dealer but in the meantime maybe someone knows off the top of their head.So the transmission thats in there now is a Eaton 10 speed, rated for 1400 ft lbs torque. I dont know if that rating is good or bad for the 427.Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/ Share on other sites More sharing options...
Hook n ladder 1 Posted February 9, 2015 Author Share Posted February 9, 2015 Its a 1998. I bought it in 2007, put a reman 427 in it in 2008. Quote Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/#findComment-278151 Share on other sites More sharing options...
j_martell Posted February 9, 2015 Share Posted February 9, 2015 I'd wager a guess at around 1600ft/lbs..... Quote Lack of planning on your part does not constitute an emergency on my part.... Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/#findComment-278154 Share on other sites More sharing options...
j_martell Posted February 9, 2015 Share Posted February 9, 2015 dont know if its accurate, but its from a clutch and brake supplier Quote Lack of planning on your part does not constitute an emergency on my part.... Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/#findComment-278155 Share on other sites More sharing options...
theakerstwo Posted February 9, 2015 Share Posted February 9, 2015 I just looked in a 1995 tune up manual and the 427 and 454 is listed at 1560 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/#findComment-278156 Share on other sites More sharing options...
j_martell Posted February 9, 2015 Share Posted February 9, 2015 and this from eaton Quote Lack of planning on your part does not constitute an emergency on my part.... Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/#findComment-278157 Share on other sites More sharing options...
Green Dash Posted February 9, 2015 Share Posted February 9, 2015 Not sure of the date of this spec sheet, but we have a trifecta: Quote Jim Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/#findComment-278158 Share on other sites More sharing options...
Hook n ladder 1 Posted February 9, 2015 Author Share Posted February 9, 2015 Thanks for the info, men. So my next question, is having 160 ft lbs torque more than what the trans is rated for a big deal? Quote Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/#findComment-278159 Share on other sites More sharing options...
j_martell Posted February 9, 2015 Share Posted February 9, 2015 Hey...lookee there, i helped out loli would guess they built in a fail safe....most things the fail safe is safely assumed @ 10% Quote Lack of planning on your part does not constitute an emergency on my part.... Link to comment https://www.bigmacktrucks.com/topic/38849-too-much-torque/#findComment-278166 Share on other sites More sharing options...
rsb502 Posted February 9, 2015 Share Posted February 9, 2015 Most of the trucks I've seen from that era with a 427 have 1400 or 1600# transmissions, I have a 14609 behind a cranked up E9 450 that makes probably close to double that now. No issues yet other than slipping a clutch running about 90k# up a hill and rolling into it pretty hard. 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/38849-too-much-torque/#findComment-278175 Share on other sites More sharing options...
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