By on January 19, 2018

Corvette customers have enjoyed the choice of a seven-speed manual since its introduction in the macho C7. Paired with the Vette’s V8, the 144-pound transmission is made by Tremec and incorporates active rev matching.

Now, California Air Resources Board documents reveal the same TR-6070 transmission may be offered in the 2019 Camaro, in addition to its existing six-speed manual. Resistance is futile: you know you want that extra gear.

Before you think along the lines of the collective and dismiss this as a way to boost CAFE ratings and reduce fleet emissions, we encourage you to think along sportier lines. Tighter gears in the lower half of the ‘box could mean quicker acceleration off the line, something every gearhead can get behind. Hey, I’m being optimistic today.

It is also true that every manufacturer in the world is looking to increase their economies of scale, sharing parts and platforms wherever possible. Currently, the Corvette has exclusive use of the seven-speed; sharing it with its little brother would be good for the company, if not for sibling rivalry.

One thing we can agree on is that engineers did their homework in bringing this gearbox to market. The synchros are one of its unique design features, as its double- and triple-cone rings are a combination of carbon and sintered (tech term for making a solid out of a powder through heat and pressure) bronze cones designed to endure ham-fisted maneuvers while improving shift performance.

Linear bearings lower the friction of the shift rail movements, said to make the shifter feel lighter and more direct. Some Corvette owners may disagree here, having uttered epithets about the imprecise feel between fifth and seventh gears when wailing around a track. Not having firsthand experience in that particular environment with this transmission, I cannot say.

The CARB document, uncovered by AutoGuide, goes on to list M6, M7, and SA8 gearboxes as potential pairings with a 6.2-liter V8 engine. As we’ve learned with the “typo” on Jeep’s filings for the Wrangler, these documents are subject to change. We hope this one doesn’t, though.

The current Camaro SS makes 455 horsepower from its direct-injected 6.2-liter V8, with a choice of a six-speed manual or flappy paddle eight-speed. The supercharged unit in the ZL1 cranks the wick to 650 horses. And, yes, the automatic is a tad faster to sixty in both cars. The seven-speed could also be reserved for an as-yet unnamed new trim.

[Image: General Motors]

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14 Comments on “Seven of Mine: Chevrolet Assimilates Another Cog Into the Camaro...”


  • avatar
    JimC2

    Pretty soon they’ll need a split shift.

  • avatar
    srh

    “””
    Some Corvette owners may disagree here, having uttered epithets about the imprecise feel between fifth and seventh gears when wailing around a track.
    “””

    Perhaps this is a function of my local track (Portland International Raceway), but when 4th gear gets you to 151MPH I’m not sure when, on the track, you’d be grabbing another gear.

  • avatar
    stuki

    In a car, I could take or leave the extra cog, but the Cummins could really use 8 forward speeds in the Ram pickup and chassis.

  • avatar
    2drsedanman

    Chevy is hoping you will be so busy shifting you forget about the limited ability to see out of the windows.

  • avatar
    axon890

    Great. I had a 5th gen 1LE, the car was a beast up until the fifth gear. Fifth and sixth were definitely just for eeking out the mpgs. The couple of 6th gen manuals that I’ve driven seem to suffer from the same problem.

  • avatar
    golden2husky

    Gears 1 through 4 are nicely spaced and the shift mechanism, while a bit notchy, shifts very well. Clutch take-up is excellent. When having fun, I never go beyond the first four. That 7th gear does seem to help with mileage as I can crack 30 on the highway without any hypermiling tricks. 32.8 was my best.

  • avatar
    raph

    The TR6070 comes in two flavors right now but the top three gears are all overdrive.

    STD – I:2.66 II:1.78 III:1.30 IV:1.00 V:.74 VI:.50 VII:.42

    Z51 – I:2.97 II:2.07 III:1.43 IV:1.00 V:.71 VI:.57 VII:.48

    and the Camaro’s TR6060

    STD – I:2.66 II:1.78 III:1.30 IV:1.00 V.74 VI:.50

    Switching to the Z51 cogs would defintely give the Camaro a leg up in acceleration and allow better mileage by dint of the slightly higher OD. I wonder though if an increase in power is also in the works? I’m skeptical of the latter though since GM appears to be introducing a multivalve V8 in the mid-engine vette and where I read that it was mentioned that the 4v V8 was a next gen architecture.

    Prior to the Gen III Coyote GM had an easy time putting the Mustang on the trailer so to speak since the earlier coyote V8s were down on power and torque but the new engine makes up for the missing torque at least with much more power and in combination with the A10 trans has proven pretty quick (although I think Ford is under rating the new engine a smidge given the dyno tests I’ve seen in combination with the car’s elapsed time and trap speed).

    I’m fairly certain the LT1 has almost if not reached the end of its useful life on the power making front as an OE engine (aftermarket is fine for years to come though) without substantial cost. Already the LT1 is making more power per liter than the LS7 ever did in factory trim at around 75 hp/l

  • avatar
    JohnTaurus

    Jeri Ryan is still prettier.

  • avatar
    hirostates12

    On paper 7 speeds look like an upgrade. In the real world of driving around on the earth I long the simplicity of my old 4spd Capri 5.0. I’m already shifting all the time with 6 gears…too much work. Let the torque do the work.

    • 0 avatar
      raph

      The LT has torque to spare and the M7 is really a triple overdrive transmission. The standard TR6060 and TR6070 share the same gearing through 6th and with the Z51 option TR6070 you get more aggressive gearing. Its not like you cant skip a gear or two in the run up to 4th or 5th (CAGS probably already does this) or beyond since like any modern engine with advanced computer control they are way more tractable compared to their recent (I say recent but if you had an M4 5.0 Capri it was in the early 80’s) counterparts.

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