Ford 347 Engine Build - Garage-Built Stroker

JMS also recommended we add a windage tray or an aftermarket pan. The extra stroke tends to dip the counterweights into the oil, causing foaming and loss of horsepower. Because the deck height is 8.200 on our block, the pistons are at zero deck. With the 58cc chamber on the AFR heads, the engine has a 10.9:1 compression ratio. That will work with pump gas and we will add a little fog of nitrous for some street fun.

JMS also recommended we add a windage tray or an aftermarket pan. The extra stroke tends t

Engine Specs
Bore: 4.030
Deck: 8.200
Stroke: 3.400
Cubic inches: 347
Rod length: 5.400
Compression distance: 1.100
Valve relief: -5cc
Rod journal: 2.100
Main journal: 2.249

Engine Specifications
Torque Specs
Main cap: 65 ft-lb (with ARP moly-lube and bolts); 85 ft-lb (motor oil and stock bolts)
Rod cap: 50 ft-lb (3/8-inch ARP bolt and nut); 40 ft-lb (3/8-inch ARP capscrew); 20 ft-lb (stock); 0.0060 to 0.0067 bolt stretch

Tolerances
Main bearing clearance: 0.0025 to 0.0030
Rod bearing clearance: 0.0020 to 0.0030
Crank end play: 0.0040 to 0.0080
Rod side clearance: 0.010 to 0.020