K1 Chrysler. 360. 4.000" Forged Crankshaft

K1 - Forged CrankShaft

Part Number: 007CAO400
Manufacturer: K1 Technologies
Application: Chrysler Small Block 360 V8 engine — performance crankshaft for 360 LA series small block Chrysler engines and stroker builds based on that block family. 

Key Specifications

• Engine Fitment: Chrysler 360 Small Block V8 (LA family) 

• Stroke: 4.000 in (101.6 mm) — standard stroker length for 360 builds aimed at 408–410 ci, depending on piston/rod combo. 

• Material: Forged 4340 steel (high strength, core hardened and nitride hardened for durability) 

• Main Journal Diameter: 2.810 in — sized for Chrysler 360 main bearings (LA block journals) 

• Rod Journal Diameter: 2.125 in — typical small block Mopar rod journal size 

• Flange Type: 6‑bolt crank flange (standard Chrysler SB setup)

• Rear Main Seal Style: 2‑piece configuration

• Weight: ~63 lb (approx. 1850 g bob weight)

• Bearings: Crank is sold without bearings included — main/rod bearings must be sourced separately. 

• Magnetic Particle Tested: Yes — inspected to ensure no internal flaws.

• Tolerance: Journals machined to tight tolerances (~±0.0001″).

Fitment & Use

✔ Designed to replace or upgrade the crankshaft in Chrysler LA 360 engines
✔ Ideal for performance builds (higher RPM, high‑stress use, mild to moderate stroker builds)
✔ Works with standard small block Mopar main caps and blocks with standard 6‑bolt crank flange

Typical vehicles that use the Chrysler 360 engine include many Dodge / Plymouth / Chrysler models from the muscle and classic era (e.g., Duster, Dart, Charger, etc.), depending on year and configuration. This crank allows building up to roughly 408–410 ci with appropriate rods and pistons on a 360 block.