25 reactions | With plenty of power and great reliability, this 454 cid twin-turbo LS engine keeps customers knocking at Redline Performance, Inc.’s door. Find out what makes this 454 LS Redline's most popular engine package in our latest Engine of the Week video sponsored by PennGrade & Cometic Gasket, Inc. | Engine Builder Magazine | Facebook

The 1974 Motion 454 Vega was a wild experiment by Joel Rosen’s Motion Performance: taking a super-light Chevy Vega and stuffing in a massive 454-ci big-block V8. To make it work, they cut back the firewall, used a “saddle-type” front mount (think ’62 Corvette style), and moved the stock crossmember rearward. With a fresh solid-cam 454, close-ratio 4-speed manual, 4.56:1 rear axle, and big rear tires on a narrowed 12-bolt, it ripped through every gear — launching off the line so hard it broke tir