Holley EFI ECU & Harness Kit - GM TPI/Holley EFI Stealth Ram Hose Assembly Lubricant Crush Sleeve / Hardware /

Crush Sleeve / Hardware / RTV / Seal / Shims

12 hole billet booster inserts for superior atomization and crisp throttle response

1971-1972 Chevrolet Biscayne CID 305

521lb/in front spring rate

Bolts onto 360 cid engines with an externally balanced crankshaft using a 10-inch converter bolt pattern

Holley EFI ECU & Harness Kit - GM TPI/Holley EFI Stealth Ram Hose Assembly Lubricant Crush Sleeve / Hardware /Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional controls