Edelbrock EFI Fuel Rail Kit - SB Chrysler Engine and Accessory Fastener Kit They have 5/16" hex-heads and

They have 5/16" hex-heads and come in sets of (8) with reusable bowl screw gaskets

Do not allow the engine to run under 2000 rpm for the first 1/2 hour

Universal application

083" wall mild steel tubing is designed for chassis style cars to help retain the driveshaft in the event of a U-joint failure

Edelbrock EFI Fuel Rail Kit - SB Chrysler Engine and Accessory Fastener Kit They have 5/16" hex-heads andSUPER VICTOR S B CHRYSLER (3500 8000 RPM) Designed for small block Chrysler engines with conventional rectangular port heads like Edelbrock Performer RPM cylinder heads or Victor heads, this single plane Air Gap style manifold operates from 3500 to 8000 rpm. Testing has shown substantial mid range gains over the current designs. The runners have been cast in such a way to insure enough metal thickness to allow for gasket matching and porting. Accepts