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Edelbrock 5425 Small Block Chevy Dual Quad Intake Manifold

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Specs
Material Type:
Aluminum
Overall Height:
3.30
Sold in Quantity:
Each
Finish:
Natural
Port Height:
1.90
Port Width:
1.18
MFG. Part #:
5425
Intake Manifold Type:
Dual Plane
Carburetor Quantity:
Two
Carburetor Flange Type:
4-Barrel Spread Bore
Edelbrock 5425 Small Block Chevy Dual Quad Intake ManifoldEdelbrock 5425 Small Block Chevy Dual Quad Intake ManifoldEdelbrock 5425 Small Block Chevy Dual Quad Intake ManifoldEdelbrock 5425 Small Block Chevy Dual Quad Intake Manifold
Edelbrock 5425 Small Block Chevy Dual Quad Intake Manifold

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Details

Reviews

Q & A

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"

You may also be interested in:

Oil Breather Tube
(Part #91017441)
                        

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.  Measures 1-1/4" o/d at the base and 1-1/2" o/d at the to.

Edelbrock Small Block Chevy Dual Quad Set-Up
(Part #92519906)
                        

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
(Part #3251235)
                        

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
(Part #5502060)
                        Our push-on breather cap fits 1-3/8" O.D. oil fill tubes (such as our tube 910-17441).
                    
Edelbrock 4185 1965-Up Big Block Chevy Finned Valve Covers
(Part #3254185)
                        

Edelbrock first made these aluminum valve covers in the late '50s and they're still a classic. Made of heavy-gauge sand-cast aluminum. Overall height is measured from base to top at the highest point. Edelbrock classic valve covers can be machined to accept breathers if desired. Tall enough to fit over roller rockers. 

Edelbrock Installation Instructions 

Edelbrock 7094 Dual Quad Carburetor Linkage
(Part #3257094)
                        

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
(Part #91011578)
                        

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 can extend as far apart as 8-7/8". All of this carburetor fuel line is anodized blue, except for the central piece of braided stainless steel hose.

Edelbrock 4119 Classic Dual Quad Air Cleaner
(Part #3254119)
                        

These dual-quad air cleaners from Edelbrock look "just right" on any nostalgia rod or muscle car. Additionally, their small size provides adequate hood clearance in demanding applications as well as a coordinated appearance with the classic finned look. The Classic Series air cleaners are available in a classic polished aluminum finish. They come with medical grade, pre-oiled cotton gauze element for excellent filtration.

OTB Gear 4451 Full Fin Air Cleaner, Offset Base, Polished
(Part #2474451)
                        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
(Part #2474461)
                        
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
(Part #2474471)
                        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"
  • Height 4-1/8"
  • Priced and sold as single assembly - purchase 2 for a twin carb application
Edelbrock 41193 Dual Quad Black Air Cleaner
(Part #32541193)
                        

This Edelbrock dual carb oval cast air cleaner has a black powdercoat finish. It has an excellent filtration system which allows for maximum performance.

  • Works with 5-1/8" Carburetor/Throttle Body Necks
  • 4.45" overall height
  • 6-7/16" center to center
  • Includes vintage Edelbrock logo
  • Made in the U.S.A.
Edelbrock 41859 Classic Big Block Chevy Satin Valve Cover
(Part #32541859)
                        

Edelbrock first made these aluminum valve covers in the late '50s and they're still a classic. Made of heavy-gauge sand-cast aluminum, these classic finned valve covers are available in a classic satin aluminum finish. Overall height is measured from base to top at the highest point. Edelbrock classic valve covers can be machined to accept breathers if desired.

  • Chevy Big-Block V8 1965 & Later, 396-502 Big Block
  • 3-1/2" Height
  • Heavy guage aluminum
  • Made in the USA
Edelbrock 2025 RPM Dual-Quad Manifold and Carb Kit for 1957-86 Small Block Chevy
(Part #3252025)
                        

This RPM Dual-Quad Manifold and Carb Kit from Edelbrock is just what you need for your 1957-1986 Small Block Chevy. These offer the ultimate setup for anyone that wants the look and the performance of dual-quad carbs. These kits include a high-tech throttle linkage, Russel fuel inlet and high quality intake gaskets from Edelbrock for a simple installation. This manifold and carbs come in a standard satin finish.

  • 1957-1986 Small Block Chevy
  • High-tech throttle linkage
  • Satin Finish
  • Sold as Kit

Kit includes:

  • Intake Manifold (7525)
  • Electric Carburetor (3251803)
  • Manual Carburetor (3251804)
  • Throttle Linkage (3257094)
  • Fuel Line (3258091)
  • Intake Gaskets (7201)
  • Intake Bolt Kit (8504)
  • Carburetor Stud Kit (8008)
Multiple Carburetor Tech Tip (Link)
Edelbrock 20254 RPM Dual-Quad Manifold and Carb Kit for 1957-86 Small Block Chevy
(Part #32520254)
                        

This RPM Dual-Quad Manifold and Carb Kit from Edelbrock is just what you need for your 1957-1986 Small Block Chevy. These offer the ultimate setup for anyone that wants the look and the performance of dual-quad carbs. These kits include a high-tech throttle linkage, Russel fuel inlet and high quality intake gaskets from Edelbrock for a simple installation. This manifold and carbs come in an EnduraShine finish.

  • 1957-1986 Small Block Chevy
  • High-tech throttle linkage
  • EnduraShine Finish
  • Sold as Kit

Kit includes:

  • Intake Manifold (75254)
  • Electric Carburetor (32518034)
  • Manual Carburetor (32518044)
  • Throttle Linkage (3257094)
  • Fuel Line (3258091)
  • Intake Gaskets (7201)
  • Intake Bolt Kit (8504)
  • Carburetor Stud Kit (8008)
Multiple Carburetor Tech Tip (Link)
Edelbrock 8091 Dual-Quad Carburetor Fuel Line
(Part #3258091)
                        

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

  • Adjustable 6-7/16" to 9" center-to-center
  • 1/8" NPT fuel pressure port
  • 3/8" NPT fuel inlet
Edelbrock 1803 Dual Quad 4 Barrel Carburetor, 500 CFM, Electric Choke
(Part #3251803)
                        

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.

  • Primary and secondary booster clusters offer the most accurate and up-to-date calibration available for today's fuels and octane levels
  • Edelbrock carburetors bolt on and run right out of the box
  • Float levels are factory set; adjustments are rarely needed
  • Change jets, adjust floats & replace needles/seats without draining fuel or removing carb
  • Two-piece design means no gaskets below the fuel level for leak-free operation
  • Includes both timed and full vacuum ports for ignition advance
  • Dual inlets

Edelbrock 500 CFM 4 Barrel Carburetor Installation Instructions (PDF)

 Top It Off Rebate (PDF)