Hooker Headers 2452 Competition Long Tube Headers 265-400 Chevy Small Block V8
520-2452
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Chevy/GMC Truck & Van Chevy Small Block
Footnotes: Applications with oxygen sensors use reducers 555-30010 for 2.5'' three bolt flange. Will not fit angle plug heads. Looking for a high performance finish for your custom dual exhaust? Use Hooker dual pipe kit 520-16523.
Accessory Compatibility: Power Steering - Yes Power Brakes - Yes Air Conditioning - Yes Smog Pump - Requires Modifications Alternator/Generator - Yes, engines with alternator/generator mounted on the cylinder head require additional brackets:
Driver side mount will require 520-10927 and 520-10928
Passgr side mount will require 520-10922 and 520-10928
Transmission Compatibility: Manual Column Shifter - Yes Manual Floor Shifter - Yes Automatic Column Shifter - Yes Automatic Floor Shifter - No
Included Items Note: Bolts and Gaskets Included, Reducers required
Port Shape: SAP
Emissions Compatibility: Not Street Legal Except Pre-1974
Accessory Compatibility:
Driver side mount will require 520-10927 and 520-10928
Passgr side mount will require 520-10922 and 520-10928
Transmission Compatibility:
Included Items Note: Bolts and Gaskets Included, Reducers required
Port Shape: SAP
Emissions Compatibility: Not Street Legal Except Pre-1974
Specifications:
Part Type
Product Line
Application
Automotive
Bolts/Studs Included
Yes
Catalytic Converter(s) Included
No
Collector Attachment
3-bolt flange
Collector Diameter
2.5 in (63.5 mm)
Cross Over Pipe Included
No
Cylinder Head Port Shape
Oval
Flange Style
Standard
Gaskets Included
Yes
Header Finish
Painted
Header Material
Steel
Header Style
Full-length
Motor Mounts Included
No
Package Depth
17.00
Package Height
39.00
Package Width
9.50
Part Category
Performance Parts
Part Fitment
Semi Universal
Primary Tube Diameter
1.625 in (41.3 mm)
Primary Tube Gauge
16-gauge
Primary Tube Length
27 in (685.8 mm)
Quantity
Sold as a pair
Reducers Included
No
Shipping Weight
38.90
Transmission Mount Included
No
Tube Direction
Down Swept
Tube Material
Mild Steel
Tuned
No
Vendor Part Number
2452HKR
Weld-Up
No
2452 - Hooker Headers Competition Headers Chevy/GM Truck is rated
out of
5 by
10.
Rated 5 out of
5
by
Lsswap68caprice from
Sounds great.
Put these in my K20 running a 350 SBC and they sound incredible. They also noticeably help the engine breathe better and seemed to improve performance.
Recommend wrapping them before install. These run really hot!! Also not much clearance next to the starter if you’re running a normal size starter.
Date published: 2020-09-22
Rated 5 out of
5
by
Mac777 from
Hooker headers
Sound great
Made it hard to find the right plug wires
I’m mix matching regular with angled plug wires on my 86 C10.
The hooker stamped plate on the header fell off immediately after start up.
Other than that
Look good
Sound good
Priced good
Date published: 2020-04-21
Rated 4 out of
5
by
Not your business from
Nice fit!
Love the sound and fit of the headers! Don't like that they are changing color so fast.... (Looking burned and old) but otherwise happy with them.
Date published: 2015-11-24
Rated 3 out of
5
by
AustinJM from
Eh
Great for money for great look good sounds good but had scratches and did not come with gasket or bolts they wouldn’t send bolts so ended up having to buy separate.
Date published: 2022-02-12
Rated 3 out of
5
by
Reese66 from
Slight defect
Perfect fit except for the #6 cylinder tube was not pre-dented for the bolt. I had to use a hammer to make a small dent so that the bolt could be inserted.
Date published: 2019-10-25
Rated 3 out of
5
by
krautwagen04 from
Ok for the money...
Put these on an '86 C10. Fit pretty good, didn't have to cut or bend anything. These trucks have plenty of room though. Decent access to the bolts and spark plugs. The build quality isn't what it used to be though. One of the collector flanges wasn't completely welded, and I also had to touch up one of the welds on the primary flange. The gaskets they give you are square port, but the headers have oval ports so throw them in the trash(the collector gaskets seem decent though). I found some gaskets from Remflex that matched pretty well. I also used the Hooker 16523HKR exhaust kit, and it bolts right up to these headers.
Date published: 2015-12-24
Rated 2 out of
5
by
76C10 from
Poor
I purchased competitors in mid sept and installed shortly after arrival.
Product fit as with minor interference with parking brake bracket and cable.
Unlike other headers the paint burn off was irregular and flakey after several hrs of runtime and have yet to give uniform apparence of painted headers.
After contact with Holley, they stated that due to inconsistency in paint application some have thicker coating than others and only expectation for coating is rust prevention during shipping and nothing more.
Very disappointed in appearance under the hood.
Date published: 2015-10-03
Rated 1 out of
5
by
06rjs from
Missing Parts
I bought these in June 2023 as part of a complete restoration and went to install them in September 2023 and the gaskets and bolts are missing. Called customer service and they said it was past the 30 days to return and was nothing they could do. Box was not damaged so they didn't fall out during shipment.
Last time I will purchase anything from JEGS....
Date published: 2023-09-23
I would like to know if headers #520-2452 will fit in a 1986 Cutlass Supreme with a 1993 gm 5.7 engine swap. Any help would be greatly appreciated. Thank you
The Hooker 520-2452 truck header does not fit an '86 Cutlass.
Date published: 2023-10-24
Will these headers fit a 65 c10 with a manual transmission, and clear the clutch linkage.
Yes, these headers will fit as long as your manual transmission has a floor shifter.
Date published: 2018-05-08
WILL THESE FIT MY 1976 CHEVY EL CAMINO
These headers do not fit El Camino , you need Hooker 2451
Date published: 2020-10-30
Applications: 1970-1981 Camaro/Firebird 265-400 1975-1979 Chevy II, Nova 265-400 Footnotes: Will fit most angle plug heads including factory Chevrolet "Bow-Tie" heads Reducers available with O2 sensor fitting Installation requires left side A/C bracket part number H7608.1979 and later vehicles with ...
Down-Style Dragster Headers Big Block Mopar 440 w/Indy Heads 2" Tube Diameter 3-1/2" Collector Diameter HTC Coated
Some parts are not legal for use in California or other states with similar laws / regulations
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
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Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.