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K1 Technologies Crankshafts Chevy / Chrysler / Ford K1 Technologies produces high performance and auto racing engine parts, and is dedicated to providing world class "energy transfer technology" at an affordable price. These are K1 Forged 4340 Crankshafts. Material properties are closely monitored for optimum performance. Counterweight placements designed for improved crankshaft performance. .125" fillet radii. Nitrided for improved bearing life. Straight hole oiling system for better lubrication. Size tolerances held to +/- .0001”. You'll find these crankshafts are top quality and you can't beat the price for what you're getting. Rely on K1 for your performance crankshaft needs!

Part # Description Stroke Main Jrnl Rod Pin Weight Price (per set) Order Online Chevy Small Block 350-3480BA6F-57 350 Forged Crank (Cam cut for 5.700" rod) 3.480 350 2.000 51 $594.99 order here 350-3480BA6F-60 350 Forged Crank (Cam cut for 6.000" rod) 3.480 350 2.000 51 $594.99 order here 350-3480BB6F-57 350 Forged Crank (Cam cut for 5.700" rod) 3.480 350 2.100 53 $594.99 order here 350-3480BB6F-60 350 Forged Crank (Cam cut for 6.000" rod) 3.480 350 2.100 53 $594.99 order here 350-3480BB6F-RN 350 Forged Crank (Cam cut for 5.700" rod) * 3.480 350 2.100 50 $594.99 order here 350-3500BA6F-57 350 Forged Crank (Cam cut for 5.700" rod) 3.500 50 2.000 51 $594.99 order here 350-3500BA6F-60 350 Forged Crank (Cam cut for 6.000" rod) 3.500 50 2.000 51 $594.99 order here 350-3500BB6F-57 350 Forged Crank (Cam cut for 5.700" rod) 3.500 50 2.100 53 $594.99 order here 350-3500BB6F-60 350 Forged Crank (Cam cut for 6.000" rod) 3.500 50 2.100 53 $594.99 order here 350-3625BB6F-57 350 Forged Crank (Cam cut for 5.700" rod) 3.625 50 2.100 56 $594.99 order here 350-3625BB6F-60 350 Forged Crank (Cam cut for 6.000" rod) 3.625 50 2.100 56 $594.99 order here 350-3750BB6F-OPS 350 Forged Crank (with 1-Piece Rear Seal) ** 3.750 50 2.100 54 $594.99 order here 350-3750BB6F-57 350 Forged Crank (Cam cut for 5.700" rod) 3.750 50 2.100 55 $594.99 order here 350-3750BB6F-60 350 Forged Crank (Cam cut for 6.000" rod) 3.750 50 2.100 55 $594.99 order here 350-3875BB6F-5850 350 Forged Crank (Cam cut for 5.850" rod) 3.875 50 2.100 54 $594.99 order here 350-3875BB6F-60 350 Forged Crank (Cam cut for 6.000" rod) 3.875 50 2.100 54 $594.99 order here 350-4000BB6F-57 350 Forged Crank (Cam cut for 5.700" rod) 4.000 50 2.100 57 $594.99 order here 350-4000BB6F-60 350 Forged Crank (Cam cut for 6.000" rod) 4.000 50 2.100 57 $594.99 order here 400-3500CB6F-57 400 Forged Crank (Cam cut for 5.700" rod) 3.500 400 2.100 54 $594.99 order here 400-3500CB6F-60 400 Forged Crank (Cam cut for 6.000" rod) 3.500 400 2.100 54 $594.99 order here 400-3750CB6F-57 400 Forged Crank (Cam cut for 5.700" rod) 3.750 400 2.100 54 $594.99 order here 400-3750CB6F-60 400 Forged Crank (Cam cut for 6.000" rod) 3.750 400 2.100 54 $594.99 order here 400-3750CB6F-2 400 Forged Crank (with Big Block Snout) 3.750 400 2.100 55 $594.99 order here 400-3800CB6F-57 400 Forged Crank (Cam cut for 5.700" rod) 3.800 400 2.100 59 $594.99 order here 400-3800CB6F-60 400 Forged Crank (Cam cut for 6.000" rod) 3.800 400 2.100 59 $594.99 order here 400-3875CB6F-57 400 Forged Crank (Cam cut for 5.700" rod) 3.875 400 2.100 57 $594.99 order here 400-3875CB6F-60 400 Forged Crank (Cam cut for 6.000" rod) 3.875 400 2.100 57 $594.99 order here 400-4000CB6F-57 400 Forged Crank (Cam cut for 5.700" rod) 4.000 400 2.100 57 $594.99 order here 400-4000CB6F-60 400 Forged Crank (Cam cut for 6.000" rod) 4.000 400 2.100 57 $594.99 order here * Rounded Leading and Trailing Edges - 50# Legal ** One Piece Rear Seal Chevy Small Block 4340 Lightweight Cranks** 327-3480AD6L 327 Lt.wt. Forged Crank (283 Mains Honda Rod Pins) 3.480 327 1.890 43 $997.99 order here 327-3500AD6L 327 Lt.wt. Forged Crank (283 Mains Honda Rod Pins) 3.500 327 1.890 43 $997.99 order here 350-3330BA6L-2 350 Lt.wt. Forged Crank (with Big Block Snout) 3.330 350 2.000 42 $997.99 order here 350-3350BB6L 350 Lightweight Forged Crank 3.350 350 2.000 44 $997.99 order here 350-3500BB6L-57 350 Lt.wt. Forged Crank (Cam cut for 5.700" rod) 3.500 350 2.100 43 $997.99 order here 350-3500BB6L-60 350 Lt.wt. Forged Crank (Cam cut for 6.000" rod) 3.500 350 2.100 43 $997.99 order here 350-3625BA6L-57 350 Lt.wt. Forged Crank (Cam cut for 5.700" rod) 3.625 350 2.000 44 $997.99 order here 350-3625BA6L-60 350 Lt.wt. Forged Crank (Cam cut for 6.000" rod) 3.625 350 2.000 44 $997.99 order here 350-3750BB6L-57 350 Lt.wt. Forged Crank (Cam cut for 5.700" rod) 3.750 350 2.100 46 $997.99 order here 350-3750BB6L-60 350 Lt.wt. Forged Crank (Cam cut for 6.000" rod) 3.750 350 2.100 46 $997.99 order here 350-3800BA6L-5850 350 Lt.wt. Forged Crank (Cam cut for 5.850" rod) 3.800 350 2.000 46 $997.99 order here 350-3800BA6L-60 350 Lt.wt. Forged Crank (Cam cut for 6.000" rod) 3.800 350 2.000 46 $997.99 order here 350-4000BB6L-57 350 Lt.wt. Forged Crank (Cam cut for 5.700" rod) 4.000 350 2.100 47 $997.99 order here 350-4000BB6L-60 350 Lt.wt. Forged Crank (Cam cut for 6.000" rod) 4.000 350 2.100 47 $997.99 order here ** Fully Machined on all Surfaces and Includes Undercut Counterweights LS1 Chevy 4340 Forged Cranks 346-3622RB6F-24 LS1 Forged Crank (24 Tooth Reluctor Ring) 3.622 LS1 2.100 51 $743.99 order here 346-3622RB6F-58 LS1 Forged Crank (58 Tooth Reluctor Ring) 3.622 LS1 2.100 51 $743.99 order here 346-3900RB6F-24 LS1 Forged Crank (24 Tooth Reluctor Ring) 3.900 LS1 2.100 52 $743.99 order here 346-3900RB6F-58 LS1 Forged Crank (58 Tooth Reluctor Ring) 3.900 LS1 2.100 52 $743.99 order here 346-4000RB6F-24 LS1 Forged Crank (24 Tooth Reluctor Ring) 4.000 LS1 2.100 52 $743.99 order here 346-4000RB6F-58 LS1 Forged Crank (58 Tooth Reluctor Ring) 4.000 LS1 2.100 52 $743.99 order here 346-4100RB6F-24 LS1 Forged Crank (24 Tooth Reluctor Ring) 4.100 LS1 2.100 53 $743.99 order here 346-4100RB6F-58 LS1 Forged Crank (58 Tooth Reluctor Ring) 4.100 LS1 2.100 53 $743.99 order here 346-4125RB6F-24 LS1 Forged Crank (24 Tooth Reluctor Ring) 4.125 LS1 2.100 53 $743.99 order here 346-4125RB6F-58 LS1 Forged Crank (58 Tooth Reluctor Ring) 4.125 LS1 2.100 53 $743.99 order here 346-4250RB6F-24 LS1 Forged Crank (24 Tooth Reluctor Ring) 4.250 LS1 2.100 54 $743.99 order here 346-4250RB6F-58 LS1 Forged Crank (58 Tooth Reluctor Ring) 4.250 LS1 2.100 54 $743.99 order here Chevy Big Block Forged 4340 Cranks 454-4000DC6F-6385 454 Forged Crank (Cam cut for 6.385" rod) 4.000 454 2.200 71 $689.99 order here 454-4250DB6F-6135 454 Forged Crank (Cam cut for 6.135" rod) 4.250 454 2.100 69 $689.99 order here 454-4250DB6F-6385 454 Forged Crank (Cam cut for 6.385" rod) 4.250 454 2.100 69 $689.99 order here 454-4250DC6F-6135 454 Forged Crank (Cam cut for 6.135" rod) 4.250 454 2.200 81 $689.99 order here 454-4250DC6F-6385 454 Forged Crank (Cam cut for 6.385" rod) 4.250 454 2.200 81 $689.99 order here 454-4375DC8F-6385 454 Forged Crank (Cam cut for 6.385" rod) 4.375 454 2.200 82 $689.99 order here 454-4375DC8F-6535 454 Forged Crank (Cam cut for 6.535" rod) 4.375 454 2.200 82 $689.99 order here 454-4500DC8F 454 Forged Crank 4.500 454 2.200 82 $765.99 order here 454-4625DC8F 454 Forged Crank 4.625 454 2.200 77 $765.99 order here 454-4750DC8F 454 Forged Crank 4.750 454 2.200 78 $765.99 order here Chevy Big Block 4340 Lightweight Cranks ** Fully Machined on all Surfaces and Includes Undercut Counterweights ** 454-4250DB6L-6135 454 Lt.Wt. Forged Crank (Cam cut for 6.135" rod) 4.250 454 2.100 57 $1152.99 order here 454-4250DB6L-6385 454 Lt.Wt. Forged Crank (Cam cut for 6.385" rod) 4.250 454 2.100 57 $1152.99 order here 454-4250DC6L-6135 454 Lt.Wt. Forged Crank (Cam cut for 6.135" rod) 4.250 454 2.200 59 $1152.99 order here 454-4250DC6L-6385 454 Lt.Wt. Forged Crank (Cam cut for 6.385" rod) 4.250 454 2.200 59 $1152.99 order here 454-4375DC8L-6385 454 Lt.Wt. Forged Crank (Cam cut for 6.385" rod) 4.375 454 2.200 61 $1152.99 order here 454-4375DC8L-6535 454 Lt.Wt. Forged Crank (Cam cut for 6.535" rod) 4.375 454 2.200 61 $1152.99 order here 454-4500DC8L 454 Lightweight Forged Crank 4.500 454 2.200 63 $1152.99 order here Chrysler Small Block Forged 4340 Cranks 340-3790EB6F 340 Forged Crank (3.790" stroke) 3.790 340 2.100 58 $655.99 order here 340-4000EB6F 340 Forged Crank (4.000" stroke - 1.900" wide rod pins) 4.000 340 2.100 58 $655.99 order here 340-4000EF6F 340 Forged Crank (4.000" stroke) 4.000 340 2.125 58 $655.99 order here 340-4125EA6F 340 Forged Crank (4.125" stroke) 4.125 340 2.000 59 $655.99 order here 360-3790FB6F 360 Forged Crank (3.790" stroke) 3.790 360 2.100 60 $655.99 order here 360-4000FB6F 360 Forged Crank (4.000" stroke - 1.900" wide rod pins) 4.000 360 2.100 63 $655.99 order here 360-4000FF6F 360 Forged Crank (4.000" stroke) 4.000 360 2.125 63 $655.99 order here 360-4125FA6F 360 Forged Crank (4.125" stroke) 4.125 360 2.000 58 $655.99 order here 360-4250FD6F 360 Forged Crank (4.250" stroke) 4.200 360 1.890 57 $655.99 order here Chrysler Small Block Hemi Forged 4340 Cranks 345-3795SB6F SB Hemi Forged Crank (3.795" stroke) 3.795 SB HEMI 2.100 56 $766.99 order here 345-4080SA6F SB Hemi Forged (4.080") (5.7L req's 4-bolt reluctor ring #TR-32) 4.080 SB HEMI 2.000 56 $766.99 order here 345-4080SB6F SB Hemi Forged (4.080") *Special order only!* 4.080 SB HEMI 2.100 57 $766.99 order here 345-4250SA6F SB Hemi Forged (4.250") 4.250 SB HEMI 2.000 - $766.99 order here Chrysler 383/400 Forged 4340 Cranks 383-4150TC6F 383 Crank • 4.150" stroke (use Chevrolet rod widths) 4.150 383/400 2.200 68 $792.99 order here 383-4250TC6F 383 Crank • 4.250" stroke (use Chevrolet rod widths) 4.200 383/400 2.200 69 $792.99 order here Chrysler Big Block Forged 4340 Cranks 426-3750JE6F 426 Forged Crank 3.750 426 2.375 71 $792.99 order here 426-4150JC6F 426 Forged Crank (use Chevrolet rod widths) 4.150 426 2.200 71 $792.99 order here 426-4150JE6F 426 Forged Crank 4.150 426 2.375 72 $792.99 order here 426-4150JE6F-3 426 Forged Crank (2800 Gram Bob Wt.) 4.150 426 2.375 71 $792.99 order here 426-4250JC6F 426 Forged Crank (use Chevrolet rod widths) 4.250 426 2.200 71 $792.99 order here 426-4250JE6F 426 Forged Crank 4.250 426 2.375 72 $792.99 order here 426-4375JC6F 426 Forged Crank (use Chevrolet rod widths) 4.375 426 2.200 71 $792.99 order here 426-4375JE6F 426 Forged Crank 4.375 426 2.375 72 $792.99 order here 426-4500JC6F 426 Forged Crank (use Chevrolet rod widths) 4.500 426 2.200 72 $792.99 order here 426-4500JE6F 426 Forged Crank 4.500 426 2.375 73 $792.99 order here 440-4150JC6F 440 Forged Crank (use Chevrolet rod widths) 4.150 440 2.200 71 $792.99 order here 440-4150JE6F 440 Forged Crank 4.150 440 2.375 71 $792.99 order here 440-4250JC6F 440 Forged Crank (use Chevrolet rod widths) 4.250 440 2.200 71 $792.99 order here 440-4250JE6F 440 Forged Crank 4.250 440 2.375 72 $792.99 order here 302 Ford Small Block Forged 4340 Cranks 302-3000GA6F 302 Forged Crank 3.000 302 2.000 46 $594.99 order here 302-3250GB6F 302 Forged Crank 3.250 302 2.100 47 $594.99 order here 302-3400GB6F 302 Forged Crank 3.400 302 2.100 47 $594.99 order here 351 Ford Small Block Forged 4340 Cranks 351-3500HB6F-RN 351 Forged Crank (w/ Rounded Nose & Trailing Edges) 3.500 C 2.100 50 $693.99 order here 351-3750HB6F-S-60 351 Forged Crank (Cam cut for 6.000" rod) 3.750 C 2.100 59 $627.99 order here 351-3750HB6F-S-62 351 Forged Crank (Cam cut for 6.200" rod) 3.750 C 2.100 60 $627.99 order here 351-3900HB6F-S 351 Forged Crank 3.900 C 2.100 61 $627.99 order here 351-4000HB6F-S 351 Forged Crank 4.000 C 2.100 61 $627.99 order here 351-4000KB6F-S 351 Forged Crank 4.000 W 2.100 61 $627.99 order here 351-4100KB6F-S 351 Forged Crank 4.100 W 2.100 62 $627.99 order here

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