New McLeod M-800 Transmission
Thread Starter
Senior Member
Joined: Oct 2007
Posts: 590
Likes: 1
From: Winnipeg, Manitoba
Car: 86 Camaro IROC-Z
Engine: 565ci 900 hp
Transmission: T56 Magnum by RPM Transmissions
Axle/Gears: Moser 9" w/4:56 Detroit Locker
New McLeod M-800 Transmission
Their is a new choice for us coming March of next year, this new McLeod tranny will be made to replace some of the OEM GM, FORD and Chrysler transmission. No cutting, and is rated for over 800lbs torque, McLeod put over a 1000 lbs torque throught this tranny and the only thing they broke was the tranny dyno. They say the tranny will weight in about 75 - 80 lbs a lot lighter than the Tremec's
http://www.streetlegaltv.com/forum/m...-new-3981.html
http://www.streetlegaltv.com/forum/m...-new-3981.html
Joined: Aug 1999
Posts: 858
Likes: 6
From: Elkton MD, USA
Car: 1985 Camaro Z28, VIN F
Engine: 427 sbc, HSR
Transmission: T-56, self rebuilt 700+ hp
Axle/Gears: Moser 12bolt, 3.42 trutrac
Re: New McLeod M-800 Transmission
A TKO with staight-cut gears.... yawn.... I mean.... WHINNNNNNNNNE It's 1968 all over again..
Thread Starter
Senior Member
Joined: Oct 2007
Posts: 590
Likes: 1
From: Winnipeg, Manitoba
Car: 86 Camaro IROC-Z
Engine: 565ci 900 hp
Transmission: T56 Magnum by RPM Transmissions
Axle/Gears: Moser 9" w/4:56 Detroit Locker
Re: New McLeod M-800 Transmission
http://www.mcleodind.com/forum/showthread.php?t=975
Actually the gears are helical with synchros. There is a choice with first gear. Either a 2.95 or 2.66 2nd 1.99 3rd 1.34 4th 1.1 5th .63at this moment there are no options for 2nd through 5th gears. We hope to have these units ready for sale at the end of the 1st quarter to beginning of the second quarter.
Supreme Member
iTrader: (2)
Joined: Dec 2006
Posts: 5,538
Likes: 0
From: Hou. TX
Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: New McLeod M-800 Transmission
Ill stick with my 300$ t56. Woerd looking 5 speed, wonder what the shifter looks like or make it work in out cars? Or if it bolts to the T5 bellhousing. Probably comes with one.
Joined: Aug 1999
Posts: 858
Likes: 6
From: Elkton MD, USA
Car: 1985 Camaro Z28, VIN F
Engine: 427 sbc, HSR
Transmission: T-56, self rebuilt 700+ hp
Axle/Gears: Moser 12bolt, 3.42 trutrac
Re: New McLeod M-800 Transmission
I'm still underwhelmed.. If you want a new transmission, get a Magnum T56:
http://www.keislerauto.com/recent-ne...56-magnum.html
If you can DIY, rebuild a OEM T56..
These top-loader units just seem like a step backward.
YMMV
http://www.keislerauto.com/recent-ne...56-magnum.html
If you can DIY, rebuild a OEM T56..
These top-loader units just seem like a step backward.
YMMV
Senior Member
Joined: Mar 2002
Posts: 741
Likes: 0
From: Azusa, CA
Car: 92 Z28 Camaro
Engine: Procharged 406.
Transmission: T-56
Axle/Gears: Moser 9" 4.11 Gears
Re: New McLeod M-800 Transmission
I'm still underwhelmed.. If you want a new transmission, get a Magnum T56:
http://www.keislerauto.com/recent-ne...56-magnum.html
If you can DIY, rebuild a OEM T56..
These top-loader units just seem like a step backward.
YMMV

http://www.keislerauto.com/recent-ne...56-magnum.html
If you can DIY, rebuild a OEM T56..
These top-loader units just seem like a step backward.
YMMV

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Thread Starter
Senior Member
Joined: Oct 2007
Posts: 590
Likes: 1
From: Winnipeg, Manitoba
Car: 86 Camaro IROC-Z
Engine: 565ci 900 hp
Transmission: T56 Magnum by RPM Transmissions
Axle/Gears: Moser 9" w/4:56 Detroit Locker
Re: New McLeod M-800 Transmission
No Kidding, if I could get a 300.00 T-56 that could handle 800 lbs a torque, there would be no question in what I would be buying
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Posts: n/a
Re: New McLeod M-800 Transmission
I wouldn't even care about torque rating. But I am aware of one guy, running a '98-'02 Trans Am, with a chassis-dyno-verified 999 rwtq, through the stock T56 and a 3.42:1-geared 12-bolt axle. So I'm inclined to think that if you baby it, any '94-'02 T56 will survive 800 ft-lbs.
Thread Starter
Senior Member
Joined: Oct 2007
Posts: 590
Likes: 1
From: Winnipeg, Manitoba
Car: 86 Camaro IROC-Z
Engine: 565ci 900 hp
Transmission: T56 Magnum by RPM Transmissions
Axle/Gears: Moser 9" w/4:56 Detroit Locker
Re: New McLeod M-800 Transmission
I was checking with McLeod, some of the boards were stating that this tranny was made in China, but they stated totally manufactured in the USA, retail price for tranny is set at 2295
Joined: Aug 2006
Posts: 12,812
Likes: 110
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: New McLeod M-800 Transmission
I wouldn't even care about torque rating. But I am aware of one guy, running a '98-'02 Trans Am, with a chassis-dyno-verified 999 rwtq, through the stock T56 and a 3.42:1-geared 12-bolt axle. So I'm inclined to think that if you baby it, any '94-'02 T56 will survive 800 ft-lbs.
Senior Member
Joined: Sep 2009
Posts: 569
Likes: 0
From: Madison, SD
Car: '82 Camaro
Engine: 383
Transmission: TKO 5 speed
Axle/Gears: 31 spline 9" with 4.56:1
Re: New McLeod M-800 Transmission
Looks like a nice unit!!! Got to get on the phone with McCleod and talk with them about that one!!!! March should be just about the time I'll be needing a trans for the '82.
Still like the Magnum T-56 though, that extra gear would sure make for a fun cruizin' gear!!!! G Force also has an upgrade package for the production 6 speeds to make them stand up to big power and shift a bit quicker, too.... Maybe my old Doug Nash can finally go into retirement!!!!
Still like the Magnum T-56 though, that extra gear would sure make for a fun cruizin' gear!!!! G Force also has an upgrade package for the production 6 speeds to make them stand up to big power and shift a bit quicker, too.... Maybe my old Doug Nash can finally go into retirement!!!!
Thread Starter
Senior Member
Joined: Oct 2007
Posts: 590
Likes: 1
From: Winnipeg, Manitoba
Car: 86 Camaro IROC-Z
Engine: 565ci 900 hp
Transmission: T56 Magnum by RPM Transmissions
Axle/Gears: Moser 9" w/4:56 Detroit Locker
Re: New McLeod M-800 Transmission
86TA, I agree with you totally, I would never spend that kind of money on a car that makes 1000 hp to baby it. I built my car to scare me, I ran an A Dragster, running 7.14, 198mph in the quarter. If I am going to spend that kind money on a motor, I will buy a good tranny to handle it
Thread Starter
Senior Member
Joined: Oct 2007
Posts: 590
Likes: 1
From: Winnipeg, Manitoba
Car: 86 Camaro IROC-Z
Engine: 565ci 900 hp
Transmission: T56 Magnum by RPM Transmissions
Axle/Gears: Moser 9" w/4:56 Detroit Locker
Re: New McLeod M-800 Transmission
Looks like a nice unit!!! Got to get on the phone with McCleod and talk with them about that one!!!! March should be just about the time I'll be needing a trans for the '82.
Still like the Magnum T-56 though, that extra gear would sure make for a fun cruizin' gear!!!! G Force also has an upgrade package for the production 6 speeds to make them stand up to big power and shift a bit quicker, too.... Maybe my old Doug Nash can finally go into retirement!!!!
Still like the Magnum T-56 though, that extra gear would sure make for a fun cruizin' gear!!!! G Force also has an upgrade package for the production 6 speeds to make them stand up to big power and shift a bit quicker, too.... Maybe my old Doug Nash can finally go into retirement!!!!
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Posts: n/a
Re: New McLeod M-800 Transmission
This guy couldn't've posted 999 rwtq in fourth on street radials, it was on drag tires. And if traction plus 999 ft-lbs was going to grenade the T56, it can happen on a chassis dyno, not just at the track. The car is street legal, including emissions, and does run nines at the 1/4 mile dragstrip on drag tires. The T56 is stronger than you give it credit for. This guy is using an aluminum flywheel, but is using a twin-disc clutch. The car is nearly 3700 pounds race weight. If you break a T56 with less power, you either got a T56 with a defect, or you can't drive.
Thread Starter
Senior Member
Joined: Oct 2007
Posts: 590
Likes: 1
From: Winnipeg, Manitoba
Car: 86 Camaro IROC-Z
Engine: 565ci 900 hp
Transmission: T56 Magnum by RPM Transmissions
Axle/Gears: Moser 9" w/4:56 Detroit Locker
Re: New McLeod M-800 Transmission
I wasn't going to revisit this, because it's bit off topic, but a couple posts down someone agreed.
This guy couldn't've posted 999 rwtq in fourth on street radials, it was on drag tires. And if traction plus 999 ft-lbs was going to grenade the T56, it can happen on a chassis dyno, not just at the track. The car is street legal, including emissions, and does run nines at the 1/4 mile dragstrip on drag tires. The T56 is stronger than you give it credit for. This guy is using an aluminum flywheel, but is using a twin-disc clutch. The car is nearly 3700 pounds race weight. If you break a T56 with less power, you either got a T56 with a defect, or you can't drive.
This guy couldn't've posted 999 rwtq in fourth on street radials, it was on drag tires. And if traction plus 999 ft-lbs was going to grenade the T56, it can happen on a chassis dyno, not just at the track. The car is street legal, including emissions, and does run nines at the 1/4 mile dragstrip on drag tires. The T56 is stronger than you give it credit for. This guy is using an aluminum flywheel, but is using a twin-disc clutch. The car is nearly 3700 pounds race weight. If you break a T56 with less power, you either got a T56 with a defect, or you can't drive.
Last edited by 572_Rat; Nov 17, 2009 at 10:56 AM.
Supreme Member
iTrader: (2)
Joined: Dec 2006
Posts: 5,538
Likes: 0
From: Hou. TX
Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: New McLeod M-800 Transmission
I will keep my 300$ T56, thanks guys
But yes, the T56 will take more than you think. Some however, just like cars, one out of 500 hundred is built better than the rest. My T5 lived behind over 500 HP for a long time. So, the T56 behind 1000 FTLBS is on borrowed time when you thunk about it.
My buddy has a 02 TA with a built 427 LSX, stock trans and has never had an issue. But he also has a Moser 12 bolt that supposedly has issues of bolts backing out of the TQ arm, but he has never had any issues with his and never checks it.
550$ worth of parts from thegearbox.org will makes the T56 good for 700+ HP. Or you can spend more and they can be built for 1200 HP or so.

But yes, the T56 will take more than you think. Some however, just like cars, one out of 500 hundred is built better than the rest. My T5 lived behind over 500 HP for a long time. So, the T56 behind 1000 FTLBS is on borrowed time when you thunk about it.
My buddy has a 02 TA with a built 427 LSX, stock trans and has never had an issue. But he also has a Moser 12 bolt that supposedly has issues of bolts backing out of the TQ arm, but he has never had any issues with his and never checks it.
550$ worth of parts from thegearbox.org will makes the T56 good for 700+ HP. Or you can spend more and they can be built for 1200 HP or so.
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