Edelbrock Pro Flow XT Intake Manifold



Fits 2005-2009 LS2


Edelbrock part #71403 Pro-Flo XT LS2 EFI intake manifold is engineered with a large plenum and tapered runners to deliver maximum horsepower and broad torque band throughout the rpm range (1500-7000 rpm). Features include a 90mm throttle bore opening and 2.75″ port exit height. This manifold produced 30 more horsepower over a stock LS6 manifold at 6500 rpm. Accepts GM OEM 90mm or Edelbrock #3869 throttle bodies. Compatible with LS1 Fuel Rail Kit #3629 (sold separately). This manifold offers a durable black power coated finish for long lasting protection and a distinctive look.


Manufacturer Edelbrock
Application Application Specific
UPC 00085347714032
Series Pro-Flo XT
Grade Type Performance
Gasket Or Seal Included No
Vehicle Model Chevrolet
Availability Note Available to Order
Warranty 12 Months
Ec Basic Operating Rpm Range 1500-7000 RPM
Emissions Code


Hazardous Materials Warning WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
Installation Notes
  • Recommended intake gasket: LS1/LS6 style individual port o-ring seals or Edelbrock #7386; Port exit dimensions: 1.04″x 2.74″; Manifold Dimensions: A-10.20″, B-10.00″, C-16.90″, D-3.2″, E-15 degree; For the heights of all Edelbrock manifolds, please visit the Manifold Reference Dimensions page. http://www.edelbrock.com/automotive/mc/manifolds/reference-dimensions.shtml; The throttle body centerline is located 6.75″ above the valley plate and 2.5″ forward of the first manifold hold-down bolt; Fits the factory 90mm LS2 throttle body; 90mm single throttle bore opening; Accepts Edelbrock #3869 90mm Pro-Flo XT Throttle body; #3629 LS1 XT Fuel Rail kit including provisions for either Pico or standard height injectors (available separately); Use RTV sealant to properly seal end seals, such as Edelbrock High Temp Silicone sealant #1076, DO NOT USE END SEALS GASKETS.; Hardened washers Must be used with intake bolts to ensure proper torque and prevent galling of the aluminum.; Sealant must be used on intake bolt threads if the threads extend into lifter valley or coolant passage.; NPT/Pipe thread fittings require the use of Teflon tape or paste on threads to ensure proper seal.; DO NOT OVERTIGHTEN NPT/Pipe fittings, this may cause the aluminum to crack around the fitting boss. NPT/Pipe thread is a tapered thread.; To ensure maximum performance and a proper seal, Edelbrock gaskets which are specifically designed and manufactured for use with Edelbrock parts must be used.
Center Maximum Height 10.200 in
CNC Ported No
Finish Black Powder Coated
Front Maximum Height 10.200 in
Material Aluminum
Rear Maximum Height 10.000 in
Single Or Dual Plane Type Single

Additional information

Weight 25.3 lbs
Dimensions 25 × 14.75 × 14.38 in