Because domed Hemi pistons are heavier than wedge pistons, you really need to splurge on good rods. For the sake of comparison, the standard 440 forging on the left (840 grams) is marginal at these power and rpm levels. The middle rod is a Six Pack forging (882 grams). Its wider beam adds strength, making it slightly more durable. We're going way beyond, so we used premium Crower 4340 lightweight billet rods (869 grams). The 2.20-diameter big end is smaller-and lighter-than Chrysler's 2.375 for a compact package that'll handle up to 1,000 hp. All rods measure 6.770 center to center.Because domed Hemi pistons are heavier than wedge pistons, you really need to splurge on g WET SUMP PN PRICE Milodon 7-quart oil pan 31010 $149.95 Milodon oil pump 18790 75.00 Milodon 1/2-inch oil pickup 18330 39.95 Stage V Engineering oil-drain line kit N/A 165.00 Oiling System Total: $429.90 CYLINDER HEADS PN PRICE Stage V Engineering Hemi Conversion N/A $3,990.00 Superior Automotive finish-porting N/A 750.00 Manley double valvesprings w/damper 22430 180.39 Manley valvespring cups 42122 59.95 Manley 2.20-inch stainless intake valves 11516 136.69 Manley 1.90-inch stainless exhaust valves 11901 136.69 Manley titanium retainers 23661 190.00 Manley 10-degree locks 13193 49.00 Manley lash caps 42101 28.00 Pioneer neoprene w/Teflon valve seals N/A 16.00 Manton 3/8 rocker-arm adjusters N/A 224.00 Crower 3/8 chrome-moly pushrods 70399 186.39 SVE cast-aluminum rocker covers N/A 350.00 Mopar Performance rocker-cover gaskets P4120353 35.95 Fel-Pro head gaskets 1009 39.95 SVE Grade 9 head-bolt kit N/A 145.00 MP spark plug tubes 4120294 69.95 We found one on eBay for $438!If you're on a super budget, you can use a stock 440 crankshaft (right) and knock a couple thousand bucks-and 80 cubes-off the tab. Or you can score a used ex-Top Alcohol billet crank like we did. It features a 4.375-inch stroke (5/8 greater than stock) and big-block-Chevy-sized 2.20 rod journals. We paid $500 for this Keith Black piece after ensuring it wasn't cracked or bent. Ex-Top Alcohol cranks are fairly common-just make sure yours has a stock-type flywheel/flexplate flange with an integral, or pressed in, centering ring. Some exotic cranks are a little odd and can cause headaches if not thoroughly checked out before purchase.We found one on eBay for $438! If you're on a super budget, you can use a stock 440 crank The Hemi Conversion heads are shipped in semi-CNC-ported form. To get the maximum flow, Superior's Fred Simpson spent an afternoon with a grinder and was rewarded with 391-cfm intake-port flow at 0.750 lift and 268-cfm exhaust-port flow all the way from 0.400 to 0.550 lift. Fully assembled, each Hemi Conversion head weighs 38 pounds, a full 26 pounds less than iron Hemi heads.The Hemi Conversion heads are shipped in semi-CNC-ported form. To get the maximum flow, Su Because the 440 bore size is 4.320-0.070 larger than a standard-bore 426 Hemi-Hemi Conversion motors don't take off-the-shelf Hemi pistons. Arias offers several forged pistons with compression ratios ranging from 7.0 to 14.0:1. Our 9.8:1 slugs feature modest domes, large valve-relief notches, and Lovatt Akadize hard-anodized coating. Each 0.030-oversize piston (4.350 final size) weighs 830 grams with pin. The anodized coating is applied to all nonmachined surfaces for reduced friction.Because the 440 bore size is 4.320-0.070 larger than a standard-bore 426 Hemi-Hemi Convers The Hemi Conversion roller rockers are almost too pretty to hide. Hemi scholars will note that the pretty, red-anodized rocker-shaft stands position the exhaust rocker shafts 1/2 inch closer to the engine centerline than regular 426 Hemi stands. This is done to straighten the exhaust pushrod angle and get them away from the confines of the wedge block's tighter lifter valley. The cast stainless exhaust rocker arms are 1/2 inch longer than stock to compensate. The valve angles and 175cc chamber volumes are identical to stock Chrysler 426 Hemi castings.The Hemi Conversion roller rockers are almost too pretty to hide. Hemi scholars will note « | 1 | 2 | 3 | 4 | » | View Full Article Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
