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Medium Duty Mack Info. . .


B61TENDT711
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I'm trying to find info on the Mack Midliner Power plant's.

I'm looking for Horse power n torque ratings.

Cubic inches or liters of displacement.

Durability / Reliability.

I been thinking of repower my M275 with medium duty mack power plant n trans. . .

Mike

1953 Studebaker M275. Reo 331 I-6, Spicer 5spd-DD, 6.72 Gears, 11.00R20H tires.

1959 Mack B61T. Mack END+T 711 I-6, 2 stick 15spd-OD, 6.38 Gears, 12.00-24J tires.

1962 GMC K4500. GMC 379M-V6, SM420-4spd-DD, 5.13 Gears, 8-19.5G tires.

1969 AMC AMX. AMC 390 Crossram, borgwarner T-10 4spd, 4.44 Gears, G60-14s Front N50-15s Rear.

1975 Mack DM600. 300 Mack 6spd 4.17 gears 445/65R22.5 front n 12.00R20 rear.

1976 Arctic Cat Jag2000. 275cc twin, belt drive, steal grips.

1977 Ford F350. 351M V-8, 4spd-DD, 4.56 Gears, 245/70R19.5G tires.

1988 AMC Jeep MJ. 2.5L I-4, 4spd-DD, 4.10 Gears 215/70R15 front 225/70R15 rear.

1992 Trans AM GTA. 406SBC TBI, 4L60E, 3.73 Gears, 245/50R16 front 295/50R16 Rear.

1995 GMC K2500 6.5-T, 4L80E, 4.10 gears 7.50-16D tires. 4.56 Gears coming soon.

2007 Honda Rubicon 500cc Single, 5spd fluid drive trans, 27x10-12 Front 27x12-12 Rear.

Still in search of M52 5 ton tractor, M123A1C 10 ton tractor

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I'm trying to find info on the Mack Midliner Power plant's.

I'm looking for Horse power n torque ratings.

Cubic inches or liters of displacement.

Durability / Reliability.

I been thinking of repower my M275 with medium duty mack power plant n trans. . .

Mike

Although I had very good service from my mid liner rated at 210hp and 8.8 ltr., I would choose another power plant as parts were mostly only available at a Mack dealer, and a lot were being discontinued a couple of years ago. The aftermarket support for the Renault engines was virtually non existent.

Rob

Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.

 

 

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So the Midliner is an Obsolete truck ? and now the parts are fading away ?

I have a Mack dealer "Madison Mack Sales" just down the block i drive there 5min or walk there in 15min. . .

But if the parts are obsolete then that ain't going to help and you say its an 8.8L motor ?

I was going to Repower this rig with an 8.3L Cummins and found the engine was to large . . .

So i'm guessing this would turn out the same, I have no complaint's with the Gas engine it's just 56 years old, should i ever need parts or a rebuild i'm bit concerned about availability of parts to do so . . . I guess if Ain't broke don't fix it eh ?

Mike

1953 Studebaker M275. Reo 331 I-6, Spicer 5spd-DD, 6.72 Gears, 11.00R20H tires.

1959 Mack B61T. Mack END+T 711 I-6, 2 stick 15spd-OD, 6.38 Gears, 12.00-24J tires.

1962 GMC K4500. GMC 379M-V6, SM420-4spd-DD, 5.13 Gears, 8-19.5G tires.

1969 AMC AMX. AMC 390 Crossram, borgwarner T-10 4spd, 4.44 Gears, G60-14s Front N50-15s Rear.

1975 Mack DM600. 300 Mack 6spd 4.17 gears 445/65R22.5 front n 12.00R20 rear.

1976 Arctic Cat Jag2000. 275cc twin, belt drive, steal grips.

1977 Ford F350. 351M V-8, 4spd-DD, 4.56 Gears, 245/70R19.5G tires.

1988 AMC Jeep MJ. 2.5L I-4, 4spd-DD, 4.10 Gears 215/70R15 front 225/70R15 rear.

1992 Trans AM GTA. 406SBC TBI, 4L60E, 3.73 Gears, 245/50R16 front 295/50R16 Rear.

1995 GMC K2500 6.5-T, 4L80E, 4.10 gears 7.50-16D tires. 4.56 Gears coming soon.

2007 Honda Rubicon 500cc Single, 5spd fluid drive trans, 27x10-12 Front 27x12-12 Rear.

Still in search of M52 5 ton tractor, M123A1C 10 ton tractor

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