The block arrived in a protective plastic wrapper with a $109 UPS "lift gate fee." That takes the total price to about $800.The block arrived in a protective plastic wrapper with a $109 UPS "lift gate fee." That ta In the Mar. '10 issue, we test-fitted a Ford 347 stroker kit from Summit Racing in a 302 Windsor block we had pulled from a wrecked '73 Ranchero ("Garage Built Stroker"). The block wasn't a total junker. As a 302, it had been machined by our friends at JMS Racing Engines in El Monte, California, and run on the dyno, so we already knew the bores were 4.030 and the mains were straight. The 347 parts fit, but we had to clearance the block with the Makita, dingle-hone the bore, then hope we didn't damage the cam bearings during the process. It's a lot of work and maybe a bit over the head of the first-time engine builder but not all that difficult. Summit figured this out and came up with a solution. The company's 347 stroker block has been clearanced for the 3.400 crank, bored, align-honed, and even washed like that fancy lettuce you buy in the bag at the grocery store. We decided to test-fit the same 347 rotating assembly in the new block to see if we had to lift a finger to make things fit. We were also curious to see exactly what you get for just under $700.00. Our plan was to swap all the guts from the JMS stroker into the new block. You will still have to check main bearing clearances, but the rest of the work has been done for you.Our plan was to swap all the guts from the JMS stroker into the new block. You will still 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 cap screw); 20 ft-lb (stock); 0.0060-0.0067 bolt stretch 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 TOLERANCES Main bearing clearance 0.0025-0.0030 Rod bearing clearance 0.0020-0.0030 Crank end play 0.0040-0.0080 Side clearance 0.010-0.020 PARTS LIST DESCRIPTION PN PRICE Summit Ford small-block SUM-150110 $689.95 Bolt protectors CLE-2800B1 2.39 SBF gasket set FEL-KS2328 59.25 Engine brush kit MRG-5192 26.75 4.030 ring compressor SME-904030 26.95 Outside micrometer SUM-900014 51.95 Rod bolt stretch gauge SUM-900015 64.95 Dial bore gauge SUM-900041 109.95 Engine stand drip tray SUM-901011 35.95 Balancer installer/remover SUM-G1025 94.95 Torque wrench (0-100) SUM-G1055 93.95 Engine assembly lube SUM-LUBE 1.95 Piston ring installer WMR-W80575 4.95 Eagle 347 FSB rotator ESP-B16422LA030 999.95 We clearanced our 302 original block using a Makita die grinder with a carbide tip to clear the additional 0.400-inch stroke. We've also heard that the crank could interfere with the oil pump, but we didn't have that problem.We clearanced our 302 original block using a Makita die grinder with a carbide tip to clea The Summit Racing block was clearanced for the larger H-beam rods with ARP bolts. Our I-beam rods and ARP bolts cleared as well.The Summit Racing block was clearanced for the larger H-beam rods with ARP bolts. Our I-be On the left is our 302 block. Note the threaded plugs in the oil gallery versus the press-in plugs on the Summit block. Our block also has a cam plate that can be purchased separately along with a lifter hold-down plate, a guideplate, and hardware from Summit Racing.On the left is our 302 block. Note the threaded plugs in the oil gallery versus the press- The Summit blocks are from '86 to '00, so they already have provisions for the roller-cam spider.The Summit blocks are from '86 to '00, so they already have provisions for the roller-cam The Summit blocks are from '86 to '00, so they already have provisions for the roller-cam spider.The Summit blocks are from '86 to '00, so they already have provisions for the roller-cam We also checked the bore before we attempted to drop the slugs into the bore. It measured 4.028.We also checked the bore before we attempted to drop the slugs into the bore. It measured We installed the No. 1 and No. 5 piston and rod assembly using a set of standard bearings to check the block clearance.We installed the No. 1 and No. 5 piston and rod assembly using a set of standard bearings The stroker kit has a 3.400-inch stroke crank and 5.400-inch rods with ARP rod bolts. The big end of the rod had plenty of clearance.The stroker kit has a 3.400-inch stroke crank and 5.400-inch rods with ARP rod bolts. The When you hear about the deck height, it's usually more of a guideline than an actual number unless your machinist cuts the deck to your specs. Our rotating assembly added up to exactly 8.200 inches, which is theoretically the same as the stock 302 deck. Our pistons were 0.035 in the hole in the original 302 block because of the factory deck variance. The CNC deck surface on the Summit Block put the same piston 0.005 in the hole, right where it needs to be. Deck height also has a big effect on compression ratio. The 0.030-inch-tighter deck clearance adds more than half a point of compression.When you hear about the deck height, it's usually more of a guideline than an actual numbe The 347 block has all the little things like threaded plugs in the oil pressure holes, expansion plugs, and cylinder head dowels that make engine builds a breeze. We're going to say this block is as advertised.The 347 block has all the little things like threaded plugs in the oil pressure holes, exp SOURCES Summit Racing Equipment PO Box 909 Akron OH 44398 800-230-3030 330-630-0240 www.summitracing.com Eagle Specialty Products 8530 Aaron Lane Southaven MS 38671 662-796-7373 www.eaglerod.com JMS Racing Engines El Monte CA 626-579-4567 www.jmsracing.com By Douglas R. Glad Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
