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PRO-FLO XT MANIFOLDS
FOR LS SERIES CHEVY
The Pro-Flo XT LS1 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 Pro-Flo XT throttle body #3869/#38693 or adapter #2737 and standard LS1 throttle bodies. Compatible with LS1 Fuel Rail Kit #3629 (sold separately). The Pro-Flo XT LS2 intake manifold offers the same performance qualities as the LS1 version and is machined to accept OE or equivalent LS2 throttle bodies. Aesthetics were also a major consideration in these designs by offering custom looks and choice of natural cast aluminum or black powder coated finish with contrast machined surfaces.
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| Applications |
Part# |
| Pro-Flo XT LS1 Gen III manifold (Natural Aluminum Finish) |
#7139 |
| Pro-Flo XT LS1 Gen III manifold (Black Powder-Coated Finish) |
#71393 |
| Pro-Flo XT EFI Manifold for LS2 with OE LS2 or equivalent throttle body (Natural Aluminum Finish) |
#7140 |
| Pro-Flo XT EFI Manifold for LS2 with OE LS2 or equivalent throttle body (Black Powder-Coated Finish) |
#71403 |
| Fuel Rail Kit for LS Series Chevy (Compatible with Standard or Pico injectors) |
#3629 |
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| Throttle Body Recommendations: Edelbrock #3869 or #38693. Installation Notes: Recommended gasket:
Uses LS1/LS6 style individual port O-ring seals. Manifold Dimensions: A-10.2", B-10", C-20.1" |
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CHEVROLET LS1 V8
VICTOR JR. LS1 EFI (Up to 7500 rpm)
This high-rise single plane intake is capable of supporting up to 600 hp. Like our Performer RPM LS1 intake, the Victor Jr. LS1 EFI accepts a standard flange throttle body. Includes a throttle bracket designed to work
with 700R-4, 200R-4 and Turbo 350 transmissions. Most applications will require hood modification. |
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| Application |
Part # |
| Victor Jr. LS1 EFI Intake Manifold |
#29085* |
| Fuel Rail Kit for use with #29085 & #28095 and Bosch injectors |
#3638 |
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| Throttle Body Recommendations: Edelbrock #38783 or #39783.
 Installation Notes: Uses LS1/LS6 style individual port O-ring seals. Use Edelbrock Thermostat and
Housing Assembly #4807 (160°) or #4808 (180°). Crankshaft sleeve #HP3795 and Flexplate #HP4004 is recommended when using a TH350, TH400 or 700R4 on a LS1; these items are available through Hughes
Performance retailers or you can call Hughes at 800-274-RACE. Manifold Dimensions: R-1.39", F-1.35", W-0.98", H-2.74", CH-4.95", CA-0°.
See manifold reference dimensions.
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VICTOR JR. MANIFOLDS
FOR GEN IV LS SERIES ENGINES WITH L92 HEADS
Designed for Gen IV LS engines equipped with L92 cylinder heads, this manifold is intended for EFI
racing applications operating between 3,500 – 7,500 rpm. This manifold uses a standard squarebore
carb flange that is compatible with both Edelbrock EFI intake elbows and throttle body or
four-barrel throttle bodies. L92 heads are only compatible with a 4.00" and larger bore diameters;
smaller bores (including most 5.7L blocks) will require valve reliefs cut into the block. Available for
carbureted and EFI applications; EFI manifold #28455 has additional bosses and machining that
allow for the use of fuel injectors when combined with the #3638 fuel rail kit. |
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| Applications |
Part # |
| Victor Jr. LS Series Gen IV EFI Manifold for L92 heads |
#28455 |
| Fuel Rail Kit for use with #28455 and Bosch injectors |
#3638 |
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SUPER VICTOR LS1 MANIFOLDS
CARBURETED OR COMPETITION EFI FOR GM GEN III
Building on the success of the Victor Jr. LS1 manifold, the Super Victor LS1 offers greater air flow potential for ever bigger power gains from these modern engines. The carb mount pad is 1.12" taller than the Victor
Jr. LS1, and the port exits have been increased to 1.08" x 2.74". Use Edelbrock Timing Control Module #91238 to drive the stock coil-on-plug ignition system. Super Victor EFI LS1 manifold #28095 is for high-output competition EFI systems and features precisely positioned and machined injector bosses
for excellent fuel spray patterns and maximum power. Universal 4-Barrel Throttle Bodies, fuel rails, fuel injectors, fuel pumps and regulators are available separately to complete your competition EFI system. |
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| Application |
Part # |
| Super Victor LS1 EFI manifold |
#28095 |
| Fuel Rail Kit for use with #29085 & #28095 and Bosch injectors |
#3638 |
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Installation Notes:
See manifold reference dimensions. |
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Aluminum Fuel Rails
CNC machined from aluminum extrusions, these fuel rails have a 9/16" i.d. fuel passage, a flow-through
design and 3/8" pipe threads on both ends. All hardware is included. Bracket stands included match with
standard injectors (2.650" O-ring spacing) or pico injectors (1.50" O-ring spacing) as indicated. |
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| Application |
Part # |
| Small-block Chevy LS1 (for use with #29085 and Bosch injectors) |
#3638 |
| Pro-Flow XT #7139, #71393 (Compatible with Standard or Pico injectors) |
#3629 |
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Pro-Flo2 EFI
