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Crankshaft Tech - Crank Call

Crankshaft Tech
Domestic versus overseas is... 
   
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Crankshaft Tech
Domestic versus overseas is a hot topic, but the increased competition has definitely resulted in lower pricing for consumers. While best known for its premium cranks, Lunati recently introduced its Sledgehammer line of entry-level 4340 cranks. They're 100-percent U.S. made, and this big-block Chevy unit retails for $860 from Summit.
Crankshaft Tech
These days, it's no longer... 
   
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Crankshaft Tech
These days, it's no longer accurate to dub Mopars as "alternative makes." Companies such as Eagle and 440 Source have a full line of cast and forged cranks for Chrysler LA, B, and RB motors. Thanks to the big-block Chrysler's massive bore spacing, the modest 4.150-inch stroke of this forged Eagle crank nets 500 inches out of a factory 400 block.
Crankshaft Tech
Taking advantage of the 385-series... 
   
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Crankshaft Tech
Taking advantage of the 385-series big-block Ford's towering deck height, Eagle and SCAT offer cast-steel cranks with strokes ranging from 3.850 inches to a jaw-dropping 4.850 inches. This rotating assembly is from SCAT
MATERIAL: TENSILE STRENGTH: RATING:
Cast iron 70,000-80,000 psi OE engines
Nodular iron 95,000 psi OE engines
Cast steel 105,000 psi strongest of the cast cranks
1010/1045/1053 100,000-110,000 psi high-carbon factory-grade forging
5140 steel 115,000 psi sportsman-grade forging
4130 steel 120,000-125,000 psi premium alloy
4340 steel 140,000-145,000 psi strongest alloy for cranks and rods

440 Source
Lancaster
CA
Lunati
11126 Willow Ridge Dr.
Olive Branch
MS  38654
662/892-1500

www.lunatipower.com
Automotive Machine
810/296-6501
Performance Crankshaft
Butler Performance
(931) 762-4596

www.butlerperformance.com
Scat Crankshafts
Dept. SC
Redondo Beach
CA  90278
Callies Performance Products
Fostoria
Oh
(419) 435-2711

www.callies.com
School of Automotive Machinists
Houston
TX

samracing.com
Dick Miller Racing
Hernando
MS

www.dickmillerracing.com
Survival Motorsports
(248) 366-3309

www.survivalmotorsports.com
Eagle Specialty Products
Dept. SC
Southaven
MS  38671

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