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Edelbrock 5425 Small Block Chevy Dual Quad Intake Manifold

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Specs
Finish:
Natural
MFG. Part #:
5425
Intake Manifold Type:
Dual Plane
Carburetor Quantity:
Two
Carburetor Flange Type:
4-Barrel Spread Bore

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What's in the Box

Edelbrock's C-26 manifold is designed for 1955-1986 262-400 c.i.d. S/B Chevys with a power band of 1500-5000 rpm. This dual-quad is low profile for hood clearance on most vehicles. Air-conditioning bosses and front oil filler tube boss included. Stock alternator brackets DO NOT fit.

H.E.I. distributor will fit. Use with 500 cfm Edelbrock carbs.

Dual Quad Intake Manifold Installation Instructions (PDF)

Notes

  1. This intake has a hole infront to accept a vent-tube like Chevy used from 1955-up. Our vent tube 910-17441 and cap 550-2060 can be used in this hole. If the vent tube is not needed, the hole can be filled with a "shallow-cup" frost plug available at most auto parts stores.

Specs

  • Carburetor Recommendations:  Edelbrock Perfromer Series, 500 cfm
  • Carb center to carb center:  6-7/16"
  • Manifold height @ front:  2.95"
  • Manifold height @ rear:  3.30"
  • Carb pad height:  3.125"
  • Port exit dimensions:  1.18" x 1.90"

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Oil Breather Tube
                        

Triple chrome plated steel oil fill tube fits stock Chevy V8 1955-1964 or aftermarket intake manifolds with filler tube hole at front. Works perfect in situations where there is no fill provision on the valve covers.

Works great with early-style push-on cap 550-2060. 6-13/16" in overall length.

Edelbrock Small Block Chevy Dual Quad Set-Up
                        

There is nothing sweeter looking or sounding than a dual quad on a Chevy!  This one kit gets you two manual choke Edelbrock carbs, an Edelbrock unpolished intake manifold, fuel line and special progressive linkage.  Just add a suggested air cleaner to finish your installation. Will clear HEI distributors. 6-7/16" carb centers. 

  • 1957-86 262-400 small block
  • (2) 500 cfm manual choke carbs
  • C-26 Dual-Quad manifold
  • 1500-5000 rpm
  • Low profile for hood clearance on most vehicles

Edelbrock 1235 Dual Quad Oval Air Cleaner
                        

This Edelbrock dual-quad air cleaner clears HEI distributors and all stock components. It will fit all Edelbrock dual-quad manifolds and others with 6-7/16" carb center-to-center. They come with high-quality K&N 2-1/2" washable, pre-oiled cotton gauze filter for excellent filtration.

Chrome steel.

 

Push-On Early Style Oil Breather Cap
                        Our push-on breather cap fits 1-3/8" O.D. oil fill tubes (such as our tube 910-17441).
                    
Edelbrock 7094 Dual Quad Carburetor Linkage
                        

Designed for use with Edelbrock Dual-Quad manifolds and Performer Series carburetors. This linkage kit provides smooth, progressive throttle activation using high-quality aluminum, stainless steel and brass parts with spherical rod ends.

Fits our dual-quad manifolds (with Edelbrock Performer Series carburetors):

  • 325-5420 B/B Chevy Oval Port (Edelbrock #5420)
  • 325-5425 S/B Chevy (Edelbrock #5425) 
  • 325-5408 Chevy W-Series Small Port (Edelbrock #5408)
  • 325-5409 Chevy W-Series Large Port (Edelbrock #5409)
  • 325-7535 Ford 289-302 (Edelbrock #7535)
  • 325-7585 Ford 351W (Edelbrock #7585)
325-7094 Instructions (PDF)
Dual Quad Fuel Line for Edelbrock Carbs
                        

This fuel line is intended to connect two Edelbrock (or Carter) four-barrel carbs on a low-rise 2x4 intake. The inlet fitting thread is 3/8" NPT female, and there is a 1/8" NPT hole that can be used for a fuel pressure gauge. The outlets on this adjustable fuel log can be as close together as 6-1/2" and as far apart as 8-1/4". All of this carburetor fuel line is anodized blue, except for the central piece of braided stainless steel hose.

OTB Gear 4451 Full Fin Air Cleaner, Offset Base, Polished
                        Have you got twin 4's with really tight spacing? The selection of air cleaners for you has been pretty slim right? Many manifolds out there position the carbs with only 6-7/16" center to center. This assembly features a 1/4" offset base to deal with this problem - a simple solution to an old issue. We use our Platinum Series air filter with A-356 aircraft grade castings for a show quality product. The filter media is a medium gray, washable oiled cloth. Hardware furnished includes a polished stainless socket drive top screw. Diameter 6-3/4" - Height 4-1/8". Fits carbs with the typical 5" base.
Priced and sold as single assembly - purchase 2 for a twin carb application.
  • Washable Filter Media
  • Polished
  • Fits carbs with the typical 5-1/8" base
  • Diameter 6-3/4"
  • Height 4-1/8"
  • Hardware furnished includes a polished stainless socket drive top screw
  • Priced and sold as single assembly - purchase 2 for a twin carb application.
OTB Gear 4461 Orbit Style Air Cleaner, Offset Base, Polished
                        
The inspiration for "Orbit" came from the the '30's - '40's Ford horn button design. But repeating rings were a very popular design theme by a number of auto builders. Got twin 4's with real tight spacing? The selection of air cleaners for you has been pretty slim, right? Many manifolds out there position the carbs with only 6-7/16" center to center. This variation features a 1/4" offset base to deal with this problem - a simple solution to an old issue. If spacing this tight isn't your problem, we have a straight base also. If running twin carbs, check your center to center spacing. We use our Platinum Series air filter with A-356 aircraft grade castings for a show quality product. The filter media is a medium gray, washable oiled cloth. Prefer to have an unpolished finish? You can have that too. Hardware furnished includes a polished stainless socket drive top screw. Diameter 6-3/4" - Height 4-1/2". Fits carbs with the typical 5" base.
  • Washable Filter Media
  • Polished
  • 1/4" Offset base plate
  • Fits carbs with standard 5-1/8" neck
  • Diameter 6-3/4"
  • Height 4-1/2"
  • Hardware furnished includes a polished stainless socket drive top screw
  • Priced and sold as single assembly - purchase 2 for a twin carb application
OTB Gear 4471 Mohawk Style Air Cleaner, Offset Base, Polished
                        Mohawk steps out with 5 fins and an elegant stepped  shoulder design. This variation uses a offset base. If running twin  carbs, measure your center to center dimensions. We use our Platinum  Series air filter with A-356 aircraft grade castings for a  show quality product. The filter media is a medium gray, washable oiled cloth. Hardware furnished includes a polished stainless  socket drive top screw. Diameter 6-3/4" - Height 4-1/8". Fits carbs with  the typical 5" base.
  • Washable Filter Media
  • Polished
  • 1/4" offset base plate
  • Fits carbs with the typical 5-1/8" base
  • Hardware furnished includes a polished stainless socket drive top screw
  • Diameter 6-3/4"
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  • Priced and sold as single assembly - purchase 2 for a twin carb application
Edelbrock 8091 Dual-Quad Carburetor Fuel Line
                        

This fuel log supplies fuel to two Edelbrock carbs when used on Edelbrock dual-quad intake manifolds.

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Edelbrock 1803 Dual Quad 4 Barrel Carburetor, 500 CFM, Electric Choke
                        

The Thunder Series' unique Qwik-Tune Secondary Air Valve allows for limitless calibration of the secondary circuit with simple hand tools while on your vehicle.This four barrel carb can be easily adjusted - in seconds - to suit your application...no extra parts required to achieve optimum performance.

Designed and calibrated for dual-quad applications such as the RPM Dual-Quad Air-Gap, Edelbrock C-26, F-28 and Street Tunnel Ram.

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Edelbrock 500 CFM 4 Barrel Carburetor Installation Instructions (PDF)