1QWIKLT1

Was wondering what you guys thought about any of the LT1 cars (auto or stick) generally being quicker in one particular year than any of the other years.

aggie88

The LT1 actually had minor changes over the years. I know for a fact the cam profiles vary over the years - but not significantly. I think there are also some other minor changes with engine accessories. Another significant change was the move to OBD II in 96. But I never heard anyone boasting a "93 is quicker than a 96" . If you are asking about autocross times, the earlier models with sitffer springs and the Z07 cars are quicker through the cones.

Z06_BluByU

The cam changed for the 1993 year.. yielding the LT1 H.O. cam.. all it does is add another 10 ft/lbs of torque to the advertised numbers...

http://www.malcams.com/legacy/misc/CamData.htm

Timmy!

95 had a lot of changes including going to the 13" front brakes. I went with a 95 because I figured it had the most advancements at the time for the LT1 including the Vented Opti Spark (a must have). I don't know that it's faster than any other year though.

Raysur

I think it's a wash. The '92 has 10ftlbs less than the '93-'96. The '94-'96 have a restrictive maf setup and sequential fuel injection (a plus). The '93 has no maf but batch fire injection(a minus).

Strick

The 92 is cheaper.

froggy47

I could be wrong, but usually the sticks have a better (higher #) rear end therefore quicker off the line. Why is that anyway???? Why don't the auto's come with 3.45, 3.54. 3.73 etc stock from the factory?

To answer my own question, GM figures the auto buyers are more crusing oriented?

Dunno.

Opinions/factoids?

Strick

Wouldn't it be nice if the General asked us, the Vette owners, what we would like in a Vette?

VetBoyZR1

Can you imagine a 4.10 rear in a 4 speed auto? You'd be cruising at 3000 RPM all the time, and getting 15 MPG. That's why only the 6 speed manuals get the better ratios.

mitymek

hmm,my 373 geared auto is abiut 1800 at 60 mph and 20 mpg.
ive read several times that up to 373 is hardly noticable in the autos,
loosing 1-2 mpg.
but 410 is sposedly a noteable difference in r's and mpg.
my car had 373's in it when i got it so i cant say what it felt like before.
but i would opt for 373 gears in it f they werent there already,from all that ive read so far...
i,e, i feel i lucked out on that :)
it hits fourth gear at 115 when w.o.t.,which is fast enough for me
makes me wonder if the darn thing wasnt way to long legged from the factory.


[Modified by mitymek, 9:46 PM 7/2/2003]

mitymek

hmm,i wonder what the gear ratio difference is between an auto in 4th with full lockup and the standard in 6th?
anyone got that info?

;)

aggie88

If the General ever built a 5 speed (or God forbid 6 or 7 speed auto!!!) then the skys the limit on gear ratios. Just look at the Germans (and bite my tongue - the new ricers) 4 speed automatics are about as relevant today as a 3 speed slush box. Its a shame a $50k plus flagship sports car has to live with an outdated automatic.

merrick

I know you can't reach top speed in 6th gear. 5th and 6th are overdrive.

My bias opinion is the (preOBDII) 1995 6-speed is quickest.

mitchcole

About gear ratios: on the ZF, the 4th gear is 1:1, 5th is 0.7:1, and 6th is 0.5:1.

The 4L60E 3rd is 1:1, 4th is 0.7:1

This is from memory, so feel free to correct me...

I had a 94 and now a 92. The biggest difference is the brand of tires on the car. The 92 hooks up WAY better with Dayton tires than the 94 ever did with the goodyears.

They're ALL good though. (until the C5.......... :skep: )

VET 350

92' was the last year all 4 rims and tires were the same size.
Plus, they cheaper. :-)

MTVette

There's probably more variability within each year than there is between the years. Yes, 92's probably averaged 10 ft-lbs less torque than later years, but I'll bet that the variance within each year is at least that. So, you might be able to get a 92 that's as good as the average 93.

Either way, the LT1 is a great engine. In my 92 auto, with no engine mods and a few bolt-ons (Muffler elims, 3.54 gears, K&N, etc), I just got a 13.36 at 107 mph on street tires. YMMV.
[edit - danged typos]


[Modified by MTVette, 1:13 PM 7/3/2003]

Ruby6spd

6spd's with 4.10's rock. If you have a manual it's the only way to go.. It wakes the LT-1 cars right up.

aggie88

Funny, I have the same bias. But what about Coupe vs Convertible!!!! :iagree:


[Modified by aggie88, 2:24 PM 7/3/2003]

BlackBeast2

:iagree: :withstupid:

Me bias man too. (But man I would love a 96 CE) (with my mods of course).

Most people think 'verts are lighter, but traditionaly, they are heavier due to the electric motors and wiring. And on many cars, vert springs are softer.

Lone Ranger

Actually, GM is looking at the bigger picture: fleet average emissions and fleet average mpg. Its an EPA thing that the automakers have to work with.
Tall gearing helps improve these averages, or rather, helps GM get in under the EPA's numbers.