Chevrolet Performance 19370171 - Big Block 58X Conversion Kit

Enables the use of the latest aftermarket electronic control systems to convert your BBC to a "Coil-on-Plug" system or use the LS computer to control your Big Block Chevrolet. Fits MARK 4, 5, and 6 Big Blocks. The options for choosing an electronic control system when using this conversion kit are unlimited.

• 58X Reluctor Wheel - Installs in front of the crankshaft timing gear
• 4X Camshaft Timing Gear
• New Front Cover
• Heavy Duty Double Roller Chain
• Coil Packs and ECM are NOT Included!

NOTE: Timing cover bolt pattern is for MARK5 & 6 Big Blocks, however it will fit the older MARK 4 Block - - - the MARK 4 has more timing cover bolt locations and these will not be used with this cover. Timing set interference is possible with some blocks (especially older blocks) you must check fitment and clearance prior to final installation. Depending upon your application and front pulley system, the harmonic balancer may require machining to the mounting hub to account for the added dimension of the reluctor wheel for proper front drive pulley alignment. Previous Part Number was 19260247.