Your Mileage May Vary

[Hog]

The only C4 Corvette listed that got the gas guzzler tax (according to the EPA source)was the Callaway twin Turbo for 1990 and 1991 model years, listed under the Callaway company as the manufacturer.
For model year 1994, there not one single GM made car that is listed to get the gas guzzler tax.
MY1993
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 279cid/8 cylinders
GENERAL MOTOR COMMERCIAL CHASSIS 290cid/8 cylinders
MY1992
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 279cid/8 cylinders
GENERAL MOTOR COMMERCIAL CHASSIS 290cid/8 cylinders
MY1991
CALLAWAY CALLAWAY TWIN-TURBO CORVETTE 350cid/8 cylinders
GENERAL MOTORS BROUGHAM 350cid/8 cylinders
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 279cid/8 cylinders
GENERAL MOTOR COMMERCIAL CHASSIS 290cid/8 cylinders
MY1990
GENERAL MOTORS BROUGHAM 350cid/8 cylinders
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 273cid/8 cylinders
GENERAL MOTOR COMMERCIAL CHASSIS 273cid/8 cylinders
CALLAWAY CALLAWAY TWIN-TURBO CORVETTE 350cid/8 cylinders
MY1989
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 273cid/8 cylinders
MY1988
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
MY1987
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
MY1986
GENERAL MOTORS CAPRICE WAGON 305cid/8 cylinders
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS PARISIENNE WAGON 305/8 cylinders
Here is the EPA document for perusal.
https://www3.epa.gov/fueleconomy/guzzler/420b06006.pdf
From the EPA website
https://www3.epa.gov/fueleconomy/guzzler/
I do remember that when the Chev group did the "ZR2 Big Doggie" C4 with a MARK 4 BBC with a TPI ECM that there was no way that a BBC equipped C4 would be marketable by GM as it competed with the upcoming LT5 equipped ZR1 car and that it would surely get tagged with the EPA gas guzzler tax and that was against policy.

I don't know why there is an apparent conflict, the EPA source I listed was a simple quick search. I have no idea as to its accuracy or validity.
Errors or omissions can occur in any format.

[BigJohn]

Cool, y'all want to race?

[Corvettes White]

What is "The gold leaf book?". I have been following C4's since before there were any. And this is new to me. Thanks. George

[BigJohn]

We can put gold leaf on anything even chocolate cake!

Gold Leaf Book!

[GOLDCYLON]

Originally Posted by Corvettes White

What is "The gold leaf book?". I have been following C4's since before there were any. And this is new to me. Thanks. George

There is no gold leaf book that's is what BJ called it. I was referring to "The Heart of the Beast" by Anthony young. It's the best source of information to date that I am aware of of the LT5 program. It's worth the read

[GOLDCYLON]

Originally Posted by Hog

The only C4 Corvette listed that got the gas guzzler tax (according to the EPA source)was the Callaway twin Turbo for 1990 and 1991 model years, listed under the Callaway company as the manufacturer.
For model year 1994, there not one single GM made car that is listed to get the gas guzzler tax.
MY1993
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 279cid/8 cylinders
GENERAL MOTOR COMMERCIAL CHASSIS 290cid/8 cylinders
MY1992
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 279cid/8 cylinders
GENERAL MOTOR COMMERCIAL CHASSIS 290cid/8 cylinders
MY1991
CALLAWAY CALLAWAY TWIN-TURBO CORVETTE 350cid/8 cylinders
GENERAL MOTORS BROUGHAM 350cid/8 cylinders
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 279cid/8 cylinders
GENERAL MOTOR COMMERCIAL CHASSIS 290cid/8 cylinders
MY1990
GENERAL MOTORS BROUGHAM 350cid/8 cylinders
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 273cid/8 cylinders
GENERAL MOTOR COMMERCIAL CHASSIS 273cid/8 cylinders
CALLAWAY CALLAWAY TWIN-TURBO CORVETTE 350cid/8 cylinders
MY1989
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS ALLANTE 273cid/8 cylinders
MY1988
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
MY1987
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
MY1986
GENERAL MOTORS CAPRICE WAGON 305cid/8 cylinders
GENERAL MOTORS CAPRICE 350cid/8 cylinders (Police Package)
GENERAL MOTORS PARISIENNE WAGON 305/8 cylinders
Here is the EPA document for perusal.
https://www3.epa.gov/fueleconomy/guzzler/420b06006.pdf
From the EPA website
https://www3.epa.gov/fueleconomy/guzzler/
I do remember that when the Chev group did the "ZR2 Big Doggie" C4 with a MARK 4 BBC with a TPI ECM that there was no way that a BBC equipped C4 would be marketable by GM as it competed with the upcoming LT5 equipped ZR1 car and that it would surely get tagged with the EPA gas guzzler tax and that was against policy.

I don't know why there is an apparent conflict, the EPA source I listed was a simple quick search. I have no idea as to its accuracy or validity.
Errors or omissions can occur in any format.

I have no idea either Paul far be it from me to debate the Vice President of GM who was quoted in the book that he said to send the L98 to Lotus since it could not beat their guzzler tax. Who the hell really knows. I have moved on

[Bradjon]

I average 26/28onthd freeway and 18 around town

[davidijaxson]

I get around 15 in town and maybe 18 or 19 on the highway. We can't get any pure gas in Dallas so I don't know what effect that has on the mileage.

[ram_g]

Originally Posted by davidijaxson

We can't get any pure gas in Dallas

Depending on where specifically you are it may not be that far away. There are several Buc-ees in a ring around Dallas (and Houston, FWIW) that carry Ethanol free gas. You may have to drive 30 miles or so, but that's what I do to get Ethanol free gas near Houston.

Just BTW, I've been running 92 octane Buc-ees Ethanol Free and I get roughly the same mileage as you, although I've only gone through 2 tankfuls so far so too early to tell.