Editing Buick V8 engine (section)

====Oldsmobile version====
Although sharing basic architecture with the Buick, Oldsmobile developed its own [[Oldsmobile V8 engine#Aluminum 215|all-aluminum 215]], the "Rockette V8", to install in its F-85 Cutlass Y-body. Its angled valve covers were designed by Oldsmobile engineers to look like a traditional Olds V8.

Olds also released a turbocharged version, the {{cvt|215|hp|kW}} [[Oldsmobile V8 engine#Turbo-Rocket|Turbo-Rocket]], in its 1962–63 Oldsmobile Jetfire.<ref> Flory, J. "Kelly", Jr. ''American Cars 1960-1972'' (Jefferson, NC: McFarland & Coy, 2004), pp.205 & 246.</ref> Together with Chevrolet's turbocharged 1962 Corvair Spyder, these were the first [[Turbocharger|turbochargers]] ever offered in passenger cars.

Produced on a separate assembly line, the Olds 215 was somewhat heavier at {{cvt|350|lb|kg}}. Intended to alleviate a head-warping problem on high-compression versions, Oldsmobile added a sixth head bolt on the intake manifold side. This meant that the five-bolt Buick heads would fit on Oldsmobile blocks, but not vice versa. The Oldsmobile used wedge-shaped/quench combustion chambers/pistons that allowed larger valves, while the Buick had a 37-cc wedge combustion chamber and used "dished head" pistons.<ref>{{cite magazine|url=https://www.teambuick.com/reference/library/affordable_aluminum_v-8.php|via=TeamBuick.com|title=Affordable Aluminum V-8's|last=Davis|first=Marian|magazine=[[Hot Rod (magazine)|Hot Rod]]|date=March 1985|access-date=28 February 2019}}</ref> Altering the compression ratio on the Oldsmobile 215 required changing the heads, but on a Buick 215, only the pistons were changed, which was less expensive and simpler.