WebAug 20, 2008 · Enter Piston Stroke Length: 3.4" (I think this is the correct stroke length for a 347) Enter Head Gasket Bore Diameter: 4.100" (standard 302 gasket bore diameter) Enter Compressed Head Gasket Thickness: .041" (this is up in the air, I am willing to change this to get the right quench pad area) WebNov 18, 2024 · As a result, a stroke increase of ½” over the 302, from 3.0” to 3.5”, was determined to be the best solution. To accommodate this long stroke, a 1.28” block deck height increase was required and the crankshaft main journals were enlarged to 3” for increase strength.
302 piston to head clearance??? - Ford Mustang Forums
WebApr 29, 2024 · The clearance was well within the 0.010- to 0.020-inch tolerance, which saved us from buying new rods. See all 33 photos After removing the rod caps, we slipped some fuel hose over the rod bolts... WebWhile we were 99% sure the critical clearances would check out, a custom piston and a reduced deck height required verifying consistent piston-to-head clearance and sufficient piston-to-valve clearance. Remember, to reach a 9.5:1 compression ratio the Ford 400 block was decked a significant amount, just over .060". emma watson at 30
Deck Clearance Clarification - Ford Truck Enthusiasts Forums
WebMay 25, 2024 · The simplest way to check deck clearance is to use Dial Calipers. This is a rough measurement and not as accurate as other methods. Rotate the crankshaft so the piston is at TDC. Position the … WebJan 28, 2004 · I'm figuring the compression ratio of my 1969 302... what's the piston-deck distance with flat top pistons, stock rods? The only way to know is to measure it. If the … WebIn 1980, Ford introduced a new version of its small-block V-8 engine. It was a 4.2-liter or 255 cubic inch variant of the 302 which had a smaller bore of 3.68 inches. Essentially, it was a scaled-down version of the 302. This engine was rated at 118 horsepower and 193 lb-ft … drag show reading hour