[racprops]

Great Cats that is a 496 BIG BLOCK...sorry but a OLDs 350/403 is the total limit to fit into my vans firewall and doghouse.

Interesting reading: Horsepower: 330 hp @ 4200 RPM
Torque: 450 lb.-ft. @ 3200 RPM

In fact, the primary complaint is the gas mileage, which most state is in the 8-10 mpg range, but that is to be expected with an 8.1 liter gasoline engine. The 8.1L Vortec was the final big block gas engine from GM to date. This engine was primarily created for work purposes and was very popular among people who needed that kind of power. The massive size led to high fuel consumption, which was likely one of the key contributors to this engine being replaced by the small block 6.0 liter.

Of course your mileage may be different...I know because my Mercury is on record for getting 25MPH Highway.

Thanks anyway.

PS I do not plan on doing any towing.

Also look at the gears of the 8L90: 1st. A super Granny 4.56 2nd low 2.97, 3rd 2.08 4th. 1.69 5th.1.27 6th. 1.00 7th. .85 OD 8th. .65OD.

Compared to my stock 4L60: 1st. 2.48 2nd. 1.48 3 rd. 1.00 and 4th. .75OD.