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Olds simply raised the deck height on their small block casting about an inch to accommodate the 4.25" stroke of the big block 455. The above is a simplification, but the bottom line is that virtually nothing …

Aug 11, 2025 · 1989 Olds 98 - Clean car for Sale [email protected] on Aug 25, 2025 Aug 25, 2025 12:38 PM by [email protected] 0

Olds engines used 7/16" head bolts up 'til 1976, after that they used 1/2" head bolts. The 7/16" head bolts took 85 ft/lbs of torque, and the 1/2" bolts took 130 ft/lbs. [ Thanks to Jim Chermack, Bob Barry …

Identification The early Olds V-8s used a "raised" intake manifold design with a separate valley cover. There was also a small "bug" shield in front of the intake. The later V-8 intake seals directly to the block.

Olds didn't cast the displacement into the side of the blocks until they went to the light weight design in 1977. The 1977 and newer blocks will have the cubic inches cast in large raised numbers right above …

Dec 8, 2025 · Cutlass, 442, and Hurst/Olds -All times are GMT -7. The time now is 08:52 PM.

According to my trusty Olds engine book, the 455 was available in 310 hp, 320 hp, 365 hp, 370 hp, 390 hp, all street engines, with full manufacturers warranties. The 455 is a very forgiving and long-lasting …

The 350 was built from 1968 through 1980, produced from 160hp to 320hp, and was installed in just about every car Olds built in that period at one time or another, including the Cutlass/442, Delta 88's, …