E85-Fed 496-Inch Blown Big-Block Chevy Makes Over 1,000 HP On Westech Dyno. The E85 dropped intake temps by 85 degrees!

However, the biggest Chevy crate engines include big block varieties as well. Chevrolet's largest displacement and final, big block engine for production vehicles was the 496-cubic-inch 8.1L Vortec.

Chevy's final big block engine was one of the biggest ever. ... The Vortec 8.1 (also known as the Vortec 8100 or 496) stayed in production for heavy-duty GM vehicles all the way until 2007.

The 454 LS6 V8 engine is a rare Chevy big-block V8 from 1970. Labeled as the LS6, the 454 made 450 hp with a single 4-barrel carburetor. Chevrolet offered the 454 V8 from 1970-1975 in cars like ...

In the May 2009 issue of PHR, we introduced you to our 408ci small-block Chevy that now resides in our '75 Laguna project car. ... Our 496-cube big-block '68 Chevelle made 626 hp on the pump, ...

A walkaround of a blown 496-inch big-block Chevy engine warming up on Westech's Superflow 902 dyno. Related Videos. 0:43. 540-Inch Big-Block Chevy Makes Nearly 1,000 HP At 7,400 RPM On The Dyno.