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Cars For Sale - ClassicOldsmobile. com 1989 Olds 98 - Clean car for Sale johnaevans887@gmail com on Aug 25, 2025 Aug 25, 2025 12:38 PM by johnaevans887@gmail com 0
Olds FAQ -- Heads 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 for this information PMD Head Castings Pontiac Motor Division (PMD) was commissioned, for lack of a better term, to produce Olds heads
Olds FAQ -- Engines 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 is interchangeable among the engines of the different GM divisions, without a lot of machine work
Summary of Olds 425 455 Engines - ClassicOldsmobile. com Summary of Olds 425 455 Engines You wish: 0- Exotic heads: D, F, H, or maybe K Block? Crank? If the price is right, who cares!? Best of the best: Toro 442 engine 1968-69 Big valve C heads 4V carb High compression Toro engine has oil pan with extra capacity, built-in crank scraper, factory windage trays
Olds FAQ -- 455 CID Engine Detail - ClassicOldsmobile. com 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 engine To eek out more HP you can go with higher compression, which will prevent pump gas usage (highest stock 455 comp was 10 5:1)
Olds FAQ -- Intake Manifolds 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 FAQ -- Blocks 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 the right hand center freeze plug, eg 403 The 307 will be in liters (5L), and a diesel engine will have the letters "DX" on it
Experimental 455 Engines - 1964 - 1990 The twin-turbo injected 455 on display at the REO museum is, I believe, one of the Can-Am (see "Aluminum 2 Valve 455" in this section) motors (note that it is NOT a DOHC motor) Iron, Aluminum 2 Valve 455 Hemi (W-45) The W-45 was an experimental engine that Olds developed to compete with the Chrysler Hemi It was a overhead cam of some sort