Post Apr 28, 2013 #1 2013-04-28T18:13. Ford built three experimental 289s with a unique single overhead camshaft design that features a cam located in each of the cast aluminum valve covers (instead of on top of the cylinder heads). 1 0 obj Our cylinder heads and intakes alone are capable of making power far exceeding what the OEM blocks can handle, says John. 455 OLDS "Stump Puller" | JMacPerformance from stock 455 motor. Cookie Policy. Two other versions with different camshaft drives were developed before the W43/OW43 program was cancelled. The block comes standard with blind holes threaded for a 1/2-inch head stud, with the option to upgrade to a stout 9/16-inch head stud. EAGLE OLDS 455 CAST CRANKSHAFT - Rocket Racing & Performance LLC The Crankshaft - Getting into a more complex area of engine design we move to crankshafts. Very good motor. Jordan holds a Bachelor of Arts in journalism. We offer a quick and painless return process on all new and unused products when purchased direct. Post-1966 Buicks are known to use spark plugs that had a conical seat rather than compressed washer seal. Apparently at least one of these engines survives under the hood of an engineers personal Pontiac. Image: Hot Rod magazine. Semi-hemi design had spark plug in the middle of the four valves. Chevy 350/375 hp Chrome covers, Polished Intake, without pulleys. Check out the accompanying photos and dyno numbers. The cylinder wall thickness is at least 0.200-inch even with a 4.400-inch bore (the stock 455 bore is 4.125-inch, for comparison). Huntington calculated 480 hp at 6400 rpm, however when compared to the equivalent modern version of the ZL1, the Chevy ZZ427 crate motor produces 480 hp with a . 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. You can put on aftermarket main caps, and run girdles and all that stuff. The other solution was to reduce the angle of the pushrods. An interesting thing happened with the cast iron camshaft as development progressed: Engineers designed new cam bearing journals and revised the front sprocket cover to raise the cam 1.035 inches. ; DO NOT OVERTIGHTEN NPT/Pipe fittings, this may cause the aluminum to crack around the fitting boss. Lets take a look at 5 monsters never sold to the public. In another video he briefly touches on turbos and explains why he thinks building a DX block the purist way is the better way to go; he makes a good point that a mistake on a purist DX block is rarely fatal to the block whereas a mistake on a high compression engine can crack the block and result in a total loss of your investment (dont ever forget your engine is an investment b/c it is lol even if its admittedly a bad investment).
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