johnbor Posted June 16 Share Posted June 16 (edited) I have a Mack E6 motor with a Mack 6 Speed 2 stick transmission. I am going to pull off the Mack transmission an replace it with a Fuller 7 speed transmission that came off a Mack E7 motor. I know the bolt holes line up but will it fit the input shaft on the transmission and is the bell housing the same length or anything else . The E6 motor had a 14” clutch and the E7 had a 15” clutch ? Edited June 16 by johnbor Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/ Share on other sites More sharing options...
fiveseven0trkr Posted 5 hours ago Share Posted 5 hours ago If you don't have a home for your 2 stick after you remove it, I might want it. Curious also how easily the Mack and Eaton transmissions interchange between motors Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/#findComment-582896 Share on other sites More sharing options...
Joey Mack Posted 2 hours ago Share Posted 2 hours ago E-6 will accept the E-7 flywheel for the 15 1/2" clutch. Input shaft is the same 2" shaft. Bell housing on the eaton can be removed and fitted With a Mack bell housing... Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/#findComment-582932 Share on other sites More sharing options...
mechohaulic Posted 2 hours ago Share Posted 2 hours ago 13 minutes ago, Joey Mack said: E-6 will accept the E-7 flywheel for the 15 1/2" clutch. Input shaft is the same 2" shaft. Bell housing on the eaton can be removed and fitted With a Mack bell housing... question for the teacher> does the 14 use a 2 in shaft same as the 15?? not a 1 1/2 ? torque HP different in today's world, is this conversion taking a E-7 flywheel =installing on an E-6 crankshaft using the clutch/ pressure plate assy from E-7.? interest due to situation many yrs back ;; not to off topic BUT! built a U-600 glider for company. technically it was a U=611ST . Mack 673 T with a RT 9513 RR. did you know a 1 1/2 pilot shaft will work in a 2 in double disc clutch for over a yr !!LOL Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/#findComment-582941 Share on other sites More sharing options...
Joey Mack Posted 2 hours ago Share Posted 2 hours ago When i did the flywheel swaps the same trans went right back in.. 2" input.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/#findComment-582942 Share on other sites More sharing options...
Geoff Weeks Posted 2 hours ago Share Posted 2 hours ago 2 minutes ago, mechohaulic said: question for the teacher> does the 14 use a 2 in shaft same as the 15?? not a 1 1/2 ? torque HP different in today's world, is this conversion taking a E-7 flywheel =installing on an E-6 crankshaft using the clutch/ pressure plate assy from E-7.? interest due to situation many yrs back ;; not to off topic BUT! built a U-600 glider for company. technically it was a U=611ST . Mack 673 T with a RT 9513 RR. did you know a 1 1/2 pilot shaft will work in a 2 in double disc clutch for over a yr !!LOL On Eaton/Fuller you can swap in either input, but everyone uses 2" now. All I ran except my Marmon was 14" organic 2" shaft. Haven't had the trans or clutch out on the Marmon, but would bet it is 15.5 puck. Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/#findComment-582945 Share on other sites More sharing options...
mechohaulic Posted 1 hour ago Share Posted 1 hour ago 1 1/2 old school (very old school). don't recall for sure ; think Baskins 4070'sIH =318 DD had the 9513 1 1/2 shaft. the K100's 350 DD had the 2 in shaft. Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/#findComment-582948 Share on other sites More sharing options...
mechohaulic Posted 1 hour ago Share Posted 1 hour ago 12 minutes ago, Joey Mack said: When i did the flywheel swaps the same trans went right back in.. 2" input.. since this was a flywheel/ transmission swap 'not just flywheel . I couldn't remember. Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/#findComment-582951 Share on other sites More sharing options...
fjh Posted 1 hour ago Share Posted 1 hour ago 40 minutes ago, mechohaulic said: since this was a flywheel/ transmission swap 'not just flywheel . I couldn't remember. Thanks. Teachers assistant will comment that the 14 inch and 2 inch combo was most common on the 1200 series trans and the 11/2 was odserved by me to be more on the 95 series’s trans! observation Quote Link to comment https://www.bigmacktrucks.com/topic/75672-mack-e7-and-fuller-trans-fit-mack-e6/#findComment-582962 Share on other sites More sharing options...
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