MSD - Ford 289-302 Small Diameter Black Cap Pro-Billet Distributor Coil Spring - Bulletproof -

Coil Spring - Bulletproof - Conventional - 5 in OD - 11 in Length - 175 lb/in Spring Rate - Rear - Steel - Copper Powder Coat - Each

Used with all Holley EFI systems

The length of the shank underneath the head is 1 7/8" and the thread size is 7/16-20

5 in Deep - Two 12 AN Female Forward Pickups - Aluminum - Natural - 2-Piece Seal - Dart / Brodix Spread Rail - Small Block Chevy - Each

then allows you to plug in any Holley EFI CAN device

MSD - Ford 289-302 Small Diameter Black Cap Pro-Billet Distributor Coil Spring - Bulletproof -Mounted to the top of this shaft is a fully adjustable mechanical advance assembly. The rate at which the chromoly assembly advances the timing is easily controlled by changing the supplied advance springs and stop bushing for total advance.