138 ENGINES and COMPONENTS WARNING: For Proposition 65 information, see p. 189 Some parts are not legal for sale or use in California or other states with similar laws/regulations—see p. 189 for details. Scat Crankshafts Precision-ground and micro-polished, these crankshafts from the pros at Scat are engineered to last. They’re thoroughly inspected before they leave the facility and are available in three different styles. Stock Replacement crankshafts are made from cast steel and are great for stock, stroked, and mildly modified engines. Series 9000 crankshafts are made from cast steel, have aero wing counterweights to reduce windage and increase horsepower, lightening holes in the rod journals, and are designed for mild to moderate street or race engines. Forged 4340 crankshafts are nitride hardened for superior wear resistance, have lightening holes and large fillet radii on all journals, and are for use on highly modified street or race engines. More applications are available—call us or visit SummitRacing.com today. Rod Rear Price Engine Stroke Length Seal Balance HP Rating Each Chevy, Stock Replacement SCA-910442 350 3.480 5.700 2-piece Internal 600 .............$278.99 SCA-910526 350 3.480 5.700 1-piece Internal 600 .............$255.99 SCA-910454 454 4.000 6.135 2-piece External 700 .............$332.99 SCA-910454L 454 4.000 6.135 1-piece External 700 .............$387.99 Chevy, Series 9000 SCA-935010 350 3.480 5.700 2-piece Internal 550 .............$278.99 SCA-935050+ 350 3.750 5.700 2-piece External 600 .............$263.99 SCA-935050L+ 350 3.750 5.700 1-piece Internal 600 .............$322.99 SCA-935056+ 350 3.750 6.000 2-piece Internal 550 .............$278.99 SCA-940050 400 3.750 5.700 2-piece External 600 .............$300.99 SCA-940056 400 3.750 6.000 2-piece Internal 600 .............$299.99 Chevy, Forged 4340 SCA-435010 350 3.480 5.700 2-piece Internal 900 .............$782.99 SCA-435056+ 350 3.750 6.000 2-piece Internal 900 .............$965.99 SCA-445425+† 454 4.250 6.385 2-piece Internal 1,100 .............$924.99 Ford, Series 9000 SCA-46L020+^ 4.6L 3.750 5.850 1-piece Internal 1,000 .............$911.99 SCA-93022*+ 302 3.250 5.400 1-/2-piece External 600 .............$277.99 SCA-93023*+ 302 3.400 5.400 1-/2-piece External 550 .............$305.99 SCA-9351W05* 351W 3.500 5.955 1-/2-piece External 600 .............$393.99 SCA-9351W10*+† 351W 3.850 5.955 1-/2-piece External 700 .............$459.99 SCA-9351W46*+ 351W 4.000 6.000 1-/2-piece External 600 .............$392.99 Ford, Forged 4340 SCA-43023*+ 302 3.400 5.400 1-/2-piece External 800 .............$784.99 Jeep, Series 9000 SCA-942010 4.2L 3.895 6.123 2-piece Internal 400 .............$625.99 *Use 28 oz. balancer. +Stroker crankshaft. ^8-bolt crank flange. †An oversize fee may apply. Details at SummitRacing.com. Callies Forged Crankshafts for Chevy/GM These Callies crankshafts are forged from premium 4340 alloy to keep your Chevy/GM engine spinning and winning, race after race! Available for stroker and stock-stroke applications. Call or visit SummitRacing.com to get yours. CompStar Crankshafts CompStar crankshafts are designed by the pros at Callies to thrive in all types of abusive racing environments. They’re forged on proprietary dies and then finished for consistent grind and polish, plus precise stroke and index. The crankshafts are deep-nitride hardened and undergo a double stress-relief process that makes them dimensionally stable. Properly placed counterweights improve balance and reduce bearing loads, while all rod journals are drilled and counterweights are profiled for piston clearance. CompStar crankshafts, each ............................................................... from $1,072.00 Magnum Crankshafts Lightweight yet tough, Magnum crankshafts are the ultimate choice for high performance race engines. They’re Ultra-Case nitride heat treated, and have strategically placed Mass Correct counterweights to reduce imbalance forces for superior bearing life with minimal wear. The counterweights also feature Dual-Arc leading edges to reduce disruptive windage common in high rpm/displacement engines. Material distribution over the rod journal arms and critical strength- generating regions of each crankshaft has also been enhanced to improve its strength-to-weight ratio, and all rod journals are drilled with generously radiused lightening holes. Magnum crankshafts, each ................................................................. from $3,053.00 An oversize fee may apply. Details at SummitRacing.com. K1 Technologies Forged Crankshafts K1 Technologies 4340 forged crankshafts are nitride core hardened to reduce stress and prolong bearing life, and feature optimized counterweights for improved performance, gun-drilled rod and main journals, and cut crank keyways to match OEM locations. Available for a wide range of domestic and import applications, in a variety of stroke lengths—call us or visit SummitRacing.com for yours. Forged crankshafts, each* ......................................................................from $767.99 H-Beam Billet Connecting Rods Manufactured from 4340 billet steel, these H-beam connecting rods are finish-honed to +/- .0001" and weight matched within +/- 1 gram per end. Each rod is shot-peened for long lasting durability, has dual reinforced ribs, and includes bronze wrist pin bushings and 7/16" ARP 2000 12-point cap screws. H-beam billet connecting rods, set .........................................................from $399.99 *An oversize fee may apply. Details at SummitRacing.com. Summit Racing™ Pro LS Crankshafts Our Pro LS forged 4340 steel crankshafts are core hardened, tempered to remove stress, and nitride hardened for optimal strength. They feature 24-tooth reluctors, plus lightened rod journals, gun-drilled mains, profiled counterweights, and straight-shot oiling. SUM-180LS362224X 3.622" stroke ............................................each $927.99 SUM-180LS400024X 4.000" stroke ............................................each $899.99 Summit Racing™ Cast Crankshafts Perfect for stock replacement or mild performance builds, our cast steel cranks are precision-ground and micro-polished to exacting tolerances. Price Each SUM-180366 Chevy 350, 3.48" stroke, 1-piece rear main seal ..................$199.99 SUM-180365 Chevy 350, 3.48" stroke, 2-piece rear main seal ..................$199.99 SUM-180368* Chevy 350, 3.75" stroke, 1-piece rear main seal ..................$199.99 SUM-180367* Chevy 350, 3.75" stroke, 2-piece rear main seal ..................$199.99 SUM-180369 Chevy 400, 3.75" stroke, 2-piece rear main seal ..................$199.99 SUM-180370 Chevy 454, 4.00" stroke, 2-piece rear main seal ..................$259.99 *Stroker crankshaft. Eagle Specialty Products Crankshafts For reliable performance at a great price, take an Eagle Specialty Products cast steel crankshaft for a spin—or step up to a forged 4340 steel crankshaft for higher horsepower applications. All crankshafts have a target bobweight of +/- 2% for reduced balancing time. NOTE: Horsepower ratings are a guide for general applications— several other factors can increase or decrease a horsepower rating. Call for more details. Cast Steel Crankshafts These crankshafts feature .092" fillet radii on the rod and main journals for increased strength. Each is inspected for dimension and stroke accuracy, and has a journal finish of 6 Ra or less. Small block cranks are rated up to 500 hp, big block cranks up to 700 hp. GM cranks work with 2-piece rear main seal blocks unless noted, Ford cranks fit 1- or 2-piece blocks. Rod Price Chevy Engine Stroke Bobweight Length Balance Each ESP-103503480 350 3.480 1870 5.700 Internal .........$269.99 ESP-103523480* 350 3.480 1870 5.700 Internal .........$264.99 ESP-103503750^ 350 3.750 1870 5.700 External .........$329.99 ESP-103523750*^ 350 3.750 1870 5.700 External .........$339.99 ESP-104003750 400 3.750 1870 5.700 External .........$316.99 ESP-104544000 454 4.000 2440 6.135 External .........$322.99 Ford ESP-103023000 302 3.000 1835 5.090 28 oz. ext. ....$306.99 ESP-103023000-50 302 3.000 1835 5.090 50 oz. ext. ....$376.99 ESP-103513850^ 351W 3.850 1900 5.956 28 oz. ext. ....$399.99 Olds 455 ESP-104554260 455 4.260 2425 6.735 External .........$559.99 Forged 4340 Crankshafts These 4340 steel crankshafts feature a non-twist forging, go through a multistage heat-treat process, and are stress relieved and shot peened. They’re also X-rayed, magnafluxed, and sonic tested. Each crankshaft has cross-drilled and chamfered oil holes for improved oiling, a .125" fillet radius on rod and main journals for increased strength, and the journals are precision ground and micropolished to less than 5 Ra. Small block cranks are rated to 1,000+ hp, big block cranks to 1,500+ hp. Call us or visit SummitRacing.com to get yours. Forged 4340 crankshafts, each ...............................................................from $844.99 An oversize fee may apply. Details at SummitRacing.com. *1-piece rear seal. ^Stroker crankshaft.
