MSD RPM Adjustable Module - 1000-3000 RPM Speedo / Tachometer Combo EFI fuel rails are machined

EFI fuel rails are machined for 8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI HiRam kits

Works w/ XFI

Adapts 5 1Γüä8" air cleaner to 4 7Γüä32" carb neck

2008-2012 GMC Savana 3500

10 x 18 in Rectangle

MSD RPM Adjustable Module - 1000-3000 RPM Speedo / Tachometer Combo EFI fuel rails are machinedWith this module, the user can dial in any rpm between 1,000 and 3,000 rpm by simply turning a potentiometer. Ideal for vehicles with automatic transmissions that are using the MSD Two Step Module Selector to leave the starting line below 3,000 rpm. MSD RPM Adjustable Module 8677 1000 3000 RPM Simple Adjustable Low RPM Module Dial In Any RPM Range Between 1K And 3K Change RPM By Turning A Potentiometer Great w Auto Tranny Using MSD 2 Step Mod Selector