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LS1 Crankshaft K1 Technologies LS1 Cranks LS1 Stroker Cranks 4340 LS1 Crankshafts

K1 Technologies LS1 Crank Logo Image

K1 Technologies produces very high quality forged steel LS1 crankshafts. We are proud to be a distributor of  all premium K1 LS1 crank models and engine products. K1 Tech is producing extremely strong 4340 forged LS1 crank assemblies that are machined to very close tolerances and are far stronger than a stock LS1 crankshafts. K1 produces these excellent cranks in a stock stroke model as well as 5 different length LS1 stroker cranks.

4340 Forged Steel LS1 Crank

K1 Technologies Chevy LS1 Crank LS1 Stroker Crank

More K1 Technologies product info here: K1 Technologies Crankshafts and K1 Rods

K1 Technologies 4340 Forged Steel LS1 Crankshaft Specs

The LS1 crank assemblies are available with either a 24 tooth or a 58 tooth reluctor ring. The final two digits of the part number indicate which reluctor gear is installed. This applies to the stock stroke and the LS1 stroker crank part numbers.

Buy the best K1 Technologies LS1 crankshaft here. We offer dedicated customer service, technical assistance and reasonable prices.

Chevy LS1 Crankshafts by K1 Technologies 4340 Forged LS1 Stroker Cranks

All of the K1 Tech LS1 Crankshaft part numbers listed below have the following common features and dimensions:

  • 4340 forged steel
  • Core hardened
  • Nitrided
  • Mag-Particle Inspected
  • Straight oil holes for best rod journal lubrication
  • Stock LS1 main journal size of 2.559 in.
  • Rod journal diameter is 2.100 in.
  • 6 bolt LS1 rear flange
  • Wt = weight in pounds

We recommend the use of K1 Technologies 4340 Billet H beam LS1 connecting rods with these cranks

LS1 Crankshafts Description Stroke Wt Part #
Chevy LS1 crank, 3.622 stock stroke, 24 tooth reluctor 3.622 51

k1 346-3622RB6F-24

$835.44 $785.31

Add To Cart
Chevy LS1 forged crank, 3.622 stock stroke, 58 tooth reluctor 3.622 51

k1 346-3622RB6F-58

$835.44 $785.31

Add To Cart
Chevy LS1 forged LS1 crankshaft, 3.900 stroker, 24 tooth reluctor 3.900 52

k1 346-3900RB6F-24

Sold out, Discontinued by K1

Chevy LS1 forged crank, 3.900 stroker, 58 tooth reluctor 3.900 52

k1 346-3900RB6F-58

Sold out, Discontinued by K1

Chevy LS1 forged crank, 4.000 stroker, 24 tooth reluctor 4.000 52

k1 346-4000RB6F-24

$835.44 $785.31

Add To Cart

Chevy LS1 forged crank, 4.000 stroker, 58 tooth reluctor 4.000 52

k1 346-4000RB6F-58

$835.44 $785.31

Add To Cart
Chevy LS1 forged crank, 4.100 stroker, 24 tooth reluctor 4.100 53

k1 346-4100RB6F-24

$835.44 $785.31

Add To Cart
Chevy LS1 forged LS1 crankshaft, 4.100 stroker, 58 tooth reluctor 4.100 53

k1 346-4100RB6F-58

$835.44 $785.31

Add To Cart
Chevy LS1 forged crank, 4.125 stroker, 24 tooth reluctor 4.125 53

k1 346-4125RB6F-24

$835.44 $785.31

Add To Cart
Chevy LS1 forged crank, 4.125 stroker, 58 tooth reluctor 4.125 53

k1 346-4125RB6F-58

$835.44 $785.31

Add To Cart
Chevy forged LS1stroker crank, 4.250 in. 24 tooth reluctor 4.250 54

k1 346-4250RB6F-24

$835.44 $785.31

Add To Cart
Chevy forged LS1 stroker crank, 4.250 in. 58 tooth reluctor 4.250 54

k1 346-4250RB6F-58

$835.44 $785.31

Add To Cart

 

K1 Technologies Chevy LS1 crankshaft assemblies are 4340 forged LS1 crankshafts for superior strength and durability. These LS1 crank assemblies are ideal for any LS1 performance muscle car rebuild, street car, hot rod, nostalgia dragster, supercharged, LS1 turbo and nitrous engines, all out racing engines, marine, tractor pull, mud bog engines and more.

If you are building a hard running Chevy LS1 engine, why risk using lesser quality LS1 crankshafts in your project? At our discounted prices, you get a premium top quality, high performance K1 crankshaft, for not much more than lesser brand cranks.

K1 Technologies LS1cranksahfts and LS1 stroker cranks on this page are available to fit the following engine blocks:

  • GM LS Series Blocks
  • Chevrolet GM LS1
  • LS2
  • LS6
  • LS7
  • Stroker engines built using OEM LS Series blocks
  • Aftermarket race blocks based on the LS Series design

In addition to LS1 crankshafts we also offer a large variety of pistons and K1 Tech Chevy LS1 connecting rods to work with these LS1 crankshafts including Wiseco forged pistons, supercharged and turbocharged pistons, nitrous pistons, stroker pistons, custom pistons and more.

If you can not find the LS1 engine parts you need, or if you have questions, please e-mail us , call, or use our online chat system and let us know what you need, and we will be happy to help.

 

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