We now had the basic shortblock assembly completed and it was time to now install the camshaft and timing chain assembly. The Oldsmobile engine was very similar to the Buick engine, but not identical: it had larger wedge with flat-topped rather than domed pistons, six bolts rather than five per cylinder, and slightly larger intake valves; the valves were actuated by shaft-mounted rocker arms like the Buick and Pontiac versions, but the shafts and rockers were unique to Oldsmobile. The Pontiac was introduced in the same year, 1970, to replace the 428. The dynamometer does not lie! Our modifications to these crankshafts depending on your application are spin balancing and weight modification before assembly. Oldsmobile had been using that name since the 50's. The big and small block engine types are almost identical, with the big block having a higher deck than the small block.
Olds big block engines were cast with extremely high nickel content until mid 1970. Olds 455 620 Pontiac 389 650 a 455 should be the same weight And internal comparisons on bore, stoke and bearing sizes: Maker Size Bore Stroke Mains Rods Olds 455 4. The output of the 307 cu in 5. If it doesn't have any number stamped at all, it could be one of two things. We can pick up your numbers matching engine or we can supply a core.
If someone could verify the buick 350 coming within an olds body, also, please reply. Each piston is a little different, and with the cylinder heads in this particular application we had a little bit of a dish in the pistons for a compression ratio of 15:1. Oldsmobile 307 was produced from 1980-1990 and the 350 was produced from 1968 thru 1980. I've had coolant problems with my cutlass before but it was my 85 Cutlass supreme with a 3. Those particular cylinder heads, the way they flowed, and where, and all the other parameters, that cam worked really well with those.
About the only things common among these four motors are the distributor cap and the carb bolt pattern assuming a Q-jet - the Holley used on some Chevy motors is obviously different. Engines of the first few years have everything from alternator mounts breaking, injector pumps blowing seals, to top end problems with head gaskets blowing, push rods bending, to rockers breaking. Eddies Performance Oldsmobile Performance and Racing Engines By Eddies Oldsmobile performance and racing engines are the most popular motors that go through our machine shop. The block actually had a dummy camshaft in the normal position to drive the distributor and oil pump, with a separate, bolted-in cam carrier in the raised position for the real cam. When we have the cylinder head, intake manifold, and compression, the cam gets matched to that. The high silicon content of these pistons form as a temperature barrier which in turn retains more heat in the chamber and results in less thermal expansion over conventional alloy and stock cast pistons.
The Rockets debuted with 303 inches and 135 horsepower, then inched up over the years in displacement, with a number of variations in power due to carburetion 2bbl or 4bbl , cam profiles and compression ratio. For 1968 and up blocks, this number is located on a pad just below the cylinder head on the front left side of the engine. The Connecting Rods - Connecting rods may be one of the most obscure parts when we build your chevy engine. It could also be fitted with high-compression from the. It is funny how the public relations people at Olds advertised the compression ratio in the 442 at 10. Just ramblin' what I remember. Forged pistons, chrome moly 4340 steel rods, and forged steel crankshaft.
All generation-2 small-block Olds V8s used a stroke of 3. These are not warranty issues. Overhaul that classic Oldsmobile in your back yard in time for your local swap meet this season. Suite 100A Las Vegas Nevada 89102 Email: 1. The crank was dry fitted once in the block to confirm we had proper thrust back and forth crank motion clearance, was then given a generous coating of Lucas brand hi-performance assembly lube and installed in the block. Next was sealing up the bottom end so that meant installing the high volume oil pump with its special bolt on style pick up screen, again using Locktite on the pick up bolts. Careful, this is similar to the 1964 and earlier first generation Olds V-8, and the aluminum 215 Buick.
This can always be machined. Some crankshafts have to be modified or upgraded at extra cost for pilot bearing when used with stick transmission. Some info just kinda seems like it doesn't all add up. This problem did not appear until the engine had over 50,000 miles 80,000 km on it. Those with 5A heads used 0.
The SkyRocket was a 394 available from 1961 thru 1963, and was standard on Ninety Eights and Super 88s. In retrospect, even though these stainless steel headers were a great price and well made with heavy gauge tubing and flanges, this particular brand does not fit that well and there were several modifications necessary to the engine compartment and overall configuration to make them fit properly. Once you get a useable long-block, rebuilding an Oldsmobile Rocket is as straightforward as any other engine. Modern bellhousings are available that have the mounting ears for a stock installation in an Olds. A water-in-fuel sensor was included on cars starting late in 1980 and a retrofit kit offered for earlier cars.
It was also available in Ninety Eight Regencys in '85. This article needs additional citations for. The engine is also known for its reliability, smoothness and quietness. The engine proved so popular, the division's 88 models were popularly called. The Camshaft - Since cylinder heads are the most important part of the engine, then we would have to say that the camshaft is a close second. Oldsmobile Remanufactured Engines This remanufactured engine site has engine swaps, performance engine upgrades and general information at links below. Each engine in this generation is quite similar with the same size block and heads.
Late style crankshaft bolt pattern. You'd break into the water jackets I believe that the outer casing of the cylinder might not even be 4. We can outfit your engine with the exclusive March Performance serpentine belt system. It doesn't even go into anything more than some basic dimensions of the engine. If you want a modern automatic transmission, so far the only choice is from Tanson Sacramento, California.