Budget-Building the 455 Olds It took Roger and Alan exactly one day to find a rebuildable junkyard 455, for $150. Although it was a 2-barrel, as advertised it had the big-valve heads.

Oldsmobile and Hurst inked a deal: Olds would build 442s and send them to Hurst, who would work their voodoo and send them back just legal enough to slide through corporate with a wink. The result?

This 1969 Oldsmobile Hurst/Olds 455 is currently getting auctioned off to the highest bidder after having undergone full refurbishment both inside and out ...

GM offered two massive 455-CI big-block V8s in the late 1960s and early 1970s, one each from Oldsmobile and Pontiac. But how did these two engines differ?