Engineered with a large plenum and 6 25" tapered runners, the Pro-Flo XT LS3 EFI intake manifold delivers maximum horsepower and a broad torque band from 1500-7000+ rpm.
It features a 90mm throttle bore opening that can be ported to 105mm as needed.
Machined for use with a stock LS3 style MAP sensor or Edelbrock #36019, which is mounted directly to the manifold.
The Pro-Flo XT LS3 EFI accepts GM OEM 90mm or Edelbrock #3869/#38693 throttle bodies.
Compatible with LS3 Fuel Rail Kit #3648 (sold separately), which features -8 AN inlet and outlet.
Not intended as a direct replacement for late-model vehicles due to hood and cowl clearance.
In testing, the Pro-Flo XT LS3 intake manifold made 16 horsepower more, and the peak power point also increased by 500 rpm compared to a competitor's plastic design.
The Pro-Flo XT LS3 intake manifold is the best choice for your boosted or nitrous powered LS3 engine.
Throttle body recommendations include Edelbrock #3869/#38693 or OEM drive-by-wire style.
Installation notes indicate it uses LS3/ L92/L76 style individual port O-ring seals GM PN19256623 or Edelbrock #7395.
Manifold dimensions are A-9 28", B-9 68", C-17 40", D-3 02", E-15° with port exit dimensions of 1 23" x 2 52".
