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Re: Corvette Z06 Torque

To: "autox" <autox@autox.team.net>
Subject: Re: Corvette Z06 Torque
From: "Jim Howard" <howardje@erols.com>
Date: Thu, 29 Jun 2000 06:32:58 -0400
If you look at http://www.c5-corvette.com/2001_corvette.htm

You'll see:

"Torque is what most customers really mean when they ask for "more power,"
and down low in the torque curve is where 2001 Corvette drivers will really
feel the difference. Corvette engineers opened up the intake system,
enabling the LS1 engine to pull in more air and the camshaft profile to be
moderated in lift and overlap. The results are significant.

•300 lb-ft is delivered at 1,000 rpm - 400 rpm earlier than before

•320 lb-ft is delivered at 1,400 rpm - 800 rpm earlier than before

•340 lb-ft is delivered at 2,500 rpm - an amazing 1,400 rpm earlier than
before

•Maximum torque of 360 lb-ft for automatics, 375 lb-ft for manuals, arrives
at 4,400 rpm."

I don't know the LT4 numbers for comparison, but this is a significant
improvement and should definitely help autocrossing.

Also, there is a new transmission with lower gearing.


"New M12 6-Speed Manual
This transmission is unique to the Z06, is the only transmission available
for that model and is not available on coupe or convertible. It has more
aggressive gearing to increase torque multiplication in most forward gears,
allowing for more rapid acceleration and more usable torque at higher
speeds. The following comparisons serve to illustrate the differences
between the M12 and MM6 (which is optional on coupe and convertible models):

Gear Ratios

LS1/MM6 LS6/M12
1st Gear 2.66:1 2.97:1
2nd Gear 1.78:1 2.07:1
3rd Gear 1.30:1 1.43:1
4th Gear 1.00:1 1.00:1
5th Gear 0.74:1 0.84:1
6th Gear 0.50:1 0.56:1
Reverse 2.90:1 3.28:1 "

If you want to see some lively discussion go to corvetteforum.com and check
out the Z06 area in the discussion groups.

See ya!

Jim Howard




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