2018 C7 ZR1-drivetrain-Auto?-discussion-

[Hog]

Via the online rhetoric is sounds as though the 2018 C7 ZR1 will have an automatic/manual trans option.


If auto equipped, this will be the very 1st ZR-1/ZR1 Vette equipped as such.


GEN 1 C3 ZR-1-manual only- 53 built- LT-1 350ci-370hp gross through 255hpSAE net with 9:1 c/r in '72, 25 in 70(including 8 convertibles), 8 in 71, 20 in '72 The 1971 ZR-2 package was a ZR-1 with the 370hp LT-1 SBC swapped out for a 425hp LS-6 BBC(12 built in with 2 convertibles)


GEN 2 C4 ZR-1-manbual trans only-6922 built over 6 model years-90-95-manual only(LT5-DOHC handbuilt 100% aluminum build Chevrolet Spec, Lotus designed, Mercruiser Marine hand assembled engine-90-92 370hp @ 6000rpm-93-95 405hp @ 5800rpm), 16 fuel injectors, variable geometry 16/8 intake runners, valet key, ZF-6 speed manual 180mph+ held 50+ year old world speed records-the 24 hour record was previously held by a Duesenberg built,race car with a 1,570 cubic inch Curtis V12 aircraft engine, The LT5 powered LT5 record stood for 21 years until 2011


GEN 3 C6 ZR1-2009-2013 manual trans only(dual 260mm clutch disc(ZO6 427 uses single 290mm)-hand built LS9-638hp 2.3 L/rev TVS s/c-9.7psi boost, titanium rods-forged pistons(very rare on modern injected GM engines)-9.1:1c/r) 205mph max speed


GEN 4 C7 ZR1-2018-???? auto/manual???? All C7 Corvette GEN-5 SBC engine builds(460hp/465lb/ft torque LT1 with 11.5:1 compression-direct injection-1st manual transmission equipped engine to fully utilize Variable Valve Timing), 650hp/650lb/ft LT4(10.1:1 compression-direct injection-1.7L/rev TVS-9.4psi boost- forged pistons(the other GM v8 with forged pistons) -engine production brought internal at the Bowling Green Assembly Plant


What are your thoughts?
Should the newest Corvette to use the alphanumeric coding "ZR1" stick with tradition and stay with a manual trans, or break tradition and offer an auto?

[lfalzarano]

Paddle shifting will ultimately replace the beloved stick shift, but GM will include both as a choice. Modern race cars all use paddle shifters. It most likely have the same 10 speed as the ZL1 Camero and 1LE version.


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[Hog]

Paddle shifters are fine, but unless those paddles are connected to a proper dual-clutch transmissions(DCT). Simply having paddle-shifters on a regular style 4/5/6/8/10 speed automatic is merely a gimmick.
Neither Ford nor GM has any such DCT capable of performance V8 usage, so they did the joint venture for the conventional 10 speed auto (GM-10Lxx).

[ssrszz4]

The Honda
vfr 1200 in 2010 was the first motorcycle that was offered with dual clutch all sport vehicles seem to be heading in that direction.

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[BigJohn]

Paddle shifters are fine, but unless those paddles are connected to a proper dual-clutch transmissions(DCT). Simply having paddle-shifters on a regular style 4/5/6/8/10 speed automatic is merely a gimmick.
Neither Ford nor GM has any such DCT capable of performance V8 usage, so they did the joint venture for the conventional 10 speed auto (GM-10Lxx).

I don't like the paddle shift cars; they seem hesitant compared to race cars!

:(

[lfalzarano]

The 10 speed paddle shifter is a much faster shifter than DCT setups.

http://media.chevrolet.com/media/us/en/chevrolet/home.detail.html/content/Pages/news/us/en/2016/may/0511-10speed-chevrolet.html


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[BigJohn]

The 10 speed paddle shifter is a much faster shifter than DCT setups.

http://media.chevrolet.com/media/us/en/chevrolet/home.detail.html/content/Pages/news/us/en/2016/may/0511-10speed-chevrolet.html


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Cool, when you get one I want to come over to try it out.
Okay!
:)

[lfalzarano]

Not sure I'll be able to afford a new ZR-1, but NC isn't that far from CT. We'll see what happens. [emoji6]


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[GOLDCYLON]

Via the online rhetoric is sounds as though the 2018 C7 ZR1 will have an automatic/manual trans option.


If auto equipped, this will be the very 1st ZR-1/ZR1 Vette equipped as such.


GEN 1 C3 ZR-1-manual only- 53 built- LT-1 350ci-370hp gross through 255hpSAE net with 9:1 c/r in '72, 25 in 70(including 8 convertibles), 8 in 71, 20 in '72 The 1971 ZR-2 package was a ZR-1 with the 370hp LT-1 SBC swapped out for a 425hp LS-6 BBC(12 built in with 2 convertibles)


GEN 2 C4 ZR-1-manbual trans only-6922 built over 6 model years-90-95-manual only(LT5-DOHC handbuilt 100% aluminum build Chevrolet Spec, Lotus designed, Mercruiser Marine hand assembled engine-90-92 370hp @ 6000rpm-93-95 405hp @ 5800rpm), 16 fuel injectors, variable geometry 16/8 intake runners, valet key, ZF-6 speed manual 180mph+ held 50+ year old world speed records-the 24 hour record was previously held by a Duesenberg built,race car with a 1,570 cubic inch Curtis V12 aircraft engine, The LT5 powered LT5 record stood for 21 years until 2011


GEN 3 C6 ZR1-2009-2013 manual trans only(dual 260mm clutch disc(ZO6 427 uses single 290mm)-hand built LS9-638hp 2.3 L/rev TVS s/c-9.7psi boost, titanium rods-forged pistons(very rare on modern injected GM engines)-9.1:1c/r) 205mph max speed


GEN 4 C7 ZR1-2018-???? auto/manual???? All C7 Corvette GEN-5 SBC engine builds(460hp/465lb/ft torque LT1 with 11.5:1 compression-direct injection-1st manual transmission equipped engine to fully utilize Variable Valve Timing), 650hp/650lb/ft LT4(10.1:1 compression-direct injection-1.7L/rev TVS-9.4psi boost- forged pistons(the other GM v8 with forged pistons) -engine production brought internal at the Bowling Green Assembly Plant


What are your thoughts?
Should the newest Corvette to use the alphanumeric coding "ZR1" stick with tradition and stay with a manual trans, or break tradition and offer an auto?


I say give the customer what they want. Both options ;)

[Bob Eyres]

Bottom line, IMHO the ten speed auto would be best for Street driving and drag racing, because it has a torque converter. The DCT would be better for road racing.
Where the shift control is doesn't matter much. Why do people confuse paddle shift auto with the DCT trans.? Different animals entirely. Does it have a torque converter, or doesn't it?

I like the idea of a ten speed automatic. One step closer to the ideal, an electronically controlled CVT.

[BigJohn]

Bottom line, IMHO the ten speed auto would be best for Street driving and drag racing, because it has a torque converter. The DCT would be better for road racing.
Where the shift control is doesn't matter much. Why do people confuse paddle shift auto with the DCT trans.? Different animals entirely. Does it have a torque converter, or doesn't it?

I like the idea of a ten speed automatic. One step closer to the ideal, an electronically controlled CVT.




CVT, like on a snowmobile?

[Hog]

Bottom line, IMHO the ten speed auto would be best for Street driving and drag racing, because it has a torque converter. The DCT would be better for road racing.
Where the shift control is doesn't matter much. Why do people confuse paddle shift auto with the DCT trans.? Different animals entirely. Does it have a torque converter, or doesn't it?

I like the idea of a ten speed automatic. One step closer to the ideal, an electronically controlled CVT.
Only problem is the inherent loss using a torque converter, but GM has been attempting to reduce that loss since the late 90's with the ECCC technology. Having the TCC in an almost constant state of application helps with efficiency.
You're correct, a paddle shifter is simply a switch. You can install them in any V8 rwd Vette, F-body back to 93/94 when the 4l60e was introduced.


GM is sure to remind us that they did design there own trans controller, and not sharing the electronics with Ford. Though this is a Ford designed transmission. In return GM allowed Ford to use its FWD 9 speed auto. Tit for Tat.