MSD's Atomic EFI billet fuel rails are machined to complement the Atomic AirForce intake manifold, featuring a bright dip black anodized finish with laser-etched logos and a 5/8" diameter fuel passage sized for high-horsepower applications.
Specifications:
- Fitment: LS7 Atomic AirForce Intake Manifolds, PN 2701 / 27013 / 27014
- Fuel Passage Diameter: 5/8"
- Finish: Bright dip, black anodized with laser-etched logos
- Fitting Size: -8 (3/4-16 O-ring), fittings sold separately
- Includes: (4) -6 to 3/4-16 O-ring adapters
- Part Number: 2722
Note: tall EV1/Bosch-style injectors may interfere with low-hood applications like the Corvette on LS7/LT manifolds; 1999-2004 applications with a factory supply-and-return fuel line require adding a fuel pressure regulator; connecting directly to a GM factory quick-connect fuel line requires Adapter Kit PN 534-211 and a GM 3/8" quick-connect release tool.
FAQ
What intake manifolds do the MSD 2722 fuel rails fit?
LS7 Atomic AirForce intake manifolds, part numbers 2701, 27013, and 27014.
What fuel passage size do these rails use?
A 5/8" diameter fuel passage sized for high-horsepower applications.
Are fittings included with the rails?
Four -6 to 3/4-16 O-ring adapters are included; the large -8 O-ring fittings themselves (e.g., Earl's PN AT985008ERL) are sold separately.
Is there an interference concern with tall injectors?
Yes, MSD notes that tall EV1/Bosch-style injectors may interfere on low-hood applications such as the Corvette.
What's needed to connect directly to a GM factory quick-connect fuel line?
Adapter Kit PN 534-211 and a GM 3/8" quick-connect release tool are required.
