WebBig Block Chevy Engines Specs and Sizes. The big-block Chevy started as a significant upgrade from the 348/409 W motor. It is a 90-degree, naturally-aspirated overhead valve engine for gasoline-powered V8 … WebSep 11, 2008 · 11,294 Posts. #16 · Sep 11, 2008. I think that article's suggestion that 15-17 psi oil pressure is good - really isnt so good. My 454HO, which is basically the same shortblock as the 502, generates about 22-25psi at an 800rpm idle fully heated up, and 45psi at a 1500rpm cruise, close to 60 at 2000 rpm cruise.
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The Mark IV differed from the W-series engine in the placement of the valves and the shape of the combustion chambers. Gone was the chamber-in-block design of the W-series engine (which caused the power curve to drastically dip above 6500 rpm), and in its place was a more conventional wedge chamber in the cylinder head, which was now attached to a conventional 90 degree deck… WebFind CHEVROLET 8.2L/502 Crate Engines and get Free Shipping on Orders Over $109 at Summit Racing! Stock up on Stock Replacement Parts! ... Crate Engines, GM 502 515 … WebSep 30, 2024 · As we’ve seen, ring endgap specs are given as a clearance-per-inch of the bore. A normally aspirated 350 small-block Chevy with a 4.00-inch bore utilizing a 0.004-inch top-ring spec would only require a 0.016-inch top-ring endgap. But a normally aspirated 540ci big-block Chevy with a 4.50-inch bore would require a larger 0.018-inch top-ring ... chelsea vs man united highlight on youtube