whats the average gas mileage for an M6 LT1 car? also rwhp rwtq #'s please


-Iroc

 

I would say, 18 in the city and 25 or so on the hwy. Stock RWTQ probably about 255.

 

26mpg on the highway.
96 Trans Am, 3.73 gears, 328hp, 330tq.
Also has the 93 Tranny with the .62 6th gear.

 

I was getting 27-28 mpg on my last big trip before the supercharger. That's with stock 3.42 gears. Oh, and generally average stock RWTQ is 280-300.

 

thanx guys

 

What were the gear choices in the rear diff for a 93 LT1 I have one I dont want to pull the rear cover. It will do almost 90 in 2nd gear (thats 2nd gear in the 4 speed Auto) Any guesses as to what gear ratio I have?

 

You don't have to guess. Find the "build tag" with the RPO codes on it - usually on the end drivers door. Look for:

GU2 = 2.73 rear axle
GU5 = 3.23 rear axle

My calculator says an A4 in 2nd gear @ 90MPH:

2.73 = 5,285RPM
3.23 = 6,251RPM

Since that's above redline with 3.23's.... you would be at 83-84MPH at 5,800RPM.

 

Thanks

 

The WORST I have ever gotten on a tank was about 17.5mpg...normally I'm in the 20-22 range with city/hwy combo driving...if I drive nice I'll get 22+...on the hwy I get about 27-29mpg depending on how fast I drive...

 

OK Dam it LOL I have 2.73 gears. On older Camaros in order to change to anything 3.42 or better I would need to change the carrier or buy a shim to move the ring gear out. Is this still true for the new Camaros? If that is the case 3.23 is the best I can do with my exsiting gears? Is it worth changing to the 3.23 or should I spring for the new carrier and do 3.73? I still am going to use it as a daily driver I would be doing mild bolt on mods and a set of 1.6 RR. i would still like to get 20 MPG at worst what do you guys think?

 

Anyone???????????