Hooker Headers Competition Headers 265-400 Chevy Small Block V8
520-2453
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Items You Need
JEGS 32052 - Exhaust & Header Wrap 1" x 50' x 1/16" Thick
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JEGS 32055 - Exhaust & Header Wrap 2" x 15' x 1/16" Thick
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JEGS 32057 - Exhaust & Header Wrap 2" x 50' x 1/16" Thick
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JEGS 32062 - Exhaust & Header Wrap 1" x 50' x 1/16" Thick
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JEGS 40300 - Spark Plug Wire Boot Guards, Black [Set of 8]
$47.99
| Ratings |
|---|
| Price |
| Brand |
Chevy/GMC Truck & Van Chevy Small Block
Footnotes: Will not fit angle plug heads.
Applications with oxygen sensors use reducers 555-30010 for 2-1/2'' three bolt flange.
Looking for a high performance finish to your Custom dual exhaust? Use Hooker dual pipe kits:
        For 69-72 Blazer, Jimmy, Yukon 4WD -   520-16527
        For 73-91 Blazer, Jimmy, Yukon 4WD -   520-16528
        For 73-87 1/2, 3/4 & 1 Ton Trucks 4WD - 520-16526
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
        For 69-72 Blazer, Jimmy, Yukon 4WD -   520-16527
        For 73-91 Blazer, Jimmy, Yukon 4WD -   520-16528
        For 73-87 1/2, 3/4 & 1 Ton Trucks 4WD - 520-16526
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:
Application
Automotive
Bolts/Studs Included
Yes
Catalytic Converter(s) Included
No
Collector Attachment
3-bolt flange
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
Primary Tube Gauge
16-gauge
Quantity
Sold as a pair
Reducers Included
No
Transmission Mount Included
No
Tube Direction
Down Swept
Tube Material
Mild Steel
Tuned
No
Weld-Up
No
Collector Diameter
2.5 in (63.5 mm)
Primary Tube Diameter
1.625 in (41.3 mm)
Primary Tube Length
27 in (685.8 mm)
Manufacturer's Part Number:
2453HKR
Shipping Weight:
31.8
Package Height:
9.37
Package Depth:
39.12
Package Width:
16.25
All Budget Headers are NOT Created Equally!
Hooker's Competition Series Headers come in your choice of finishes and are engineered to perform at a reasonable price! To let your engine really breath Hooker utilized 16 gauge (.049'' thick) steel tubing attached to long transition style collectors! Giving you a serious increase in flow over other brand headers without a loss in the backpressure most engines need to perform! After years of testing, Hooker has discovered that a machined 5/16'' header flange offers enough flex to hold the gasket tight to each exhaust port, and enough rigidity to keep everything properly tied together.
Features:
Black Painted (Part numbers do not have a suffix)
Metallic Ceramic Coating (Part numbers have a -1 suffix)
Stainless Steel (Part numbers have a -2 suffix)
"Darksides" Black Ceramic Coating (Part numbers have a -3 suffix)
Titanium Ceramic Coating (Part numbers have a -4 suffix)
Does Hooker Headers 2453 fit your vehicle?
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1980 CHEVROLET K20
- Liter: 6.6
- SubModel: CHEYENNE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 400
- Engine Type: V8 ( 6.6L / 400 )
- Engine Vin: X
1974 CHEVROLET BLAZER
- Liter: 5.7
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: W
1982 CHEVROLET K5 BLAZER
- Liter: 5
- SubModel: CUSTOM
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: F
1977 GMC K15
- Liter: 6.6
- SubModel: SIERRA CLASSIC
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 400
- Engine Type: V8 ( 6.6L / 400 )
- Engine Vin: R
1981 GMC K1500
- Liter: 5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: H
1978 GMC K25
- Liter: 5.7
- SubModel: SIERRA CLASSIC
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: L
1969 CHEVROLET BLAZER
- Liter: 5.7
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: E
1977 CHEVROLET K20
- Liter: 5.7
- SubModel: SILVERADO
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 350
- Engine Type: V8 ( 5.7L / 350 )
- Engine Vin: L
1984 CHEVROLET K10
- Liter: 5
- SubModel: SILVERADO
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: H
1981 GMC JIMMY
- Liter: 5
- SubModel: HIGH SIERRA
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: H
1975 GMC JIMMY
- Liter: 6.6
- SubModel: SIERRA CLASSIC
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 400
- Engine Type: V8 ( 6.6L / 400 )
- Engine Vin: M
1977 GMC K15
- Liter: 5
- SubModel: SIERRA CLASSIC
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
- CUI: 305
- Engine Type: V8 ( 5L / 305 )
- Engine Vin: U
2453 - Hooker Headers Competition Headers Chevy/GM Truck is rated
out of
5 by
10.
Rated 5 out of
5
by
SBCK578 from
Truck breathes so much better
Put these on my K20 and they immediately seemed to help performance. Plus gave my truck a great sound. Running a 350 with these headers into 3” thrush mufflers and 3” straight pipe dumping out right at the rear axles.
Recommend wrapping them before install. Or get spark plug boots because these get hot! Fit was also fairly tight with the starter, but not too bad.
Date published: 2020-09-20
Rated 5 out of
5
by
Cornhat from
Hooker headers 85 chevy 305
Well constructed and great fit on 85 k10 manual transmission. Had to trim the corner of driver's side motor mount but everything else fit great. Gave me more performance on bottom end and sound great.
Date published: 2020-04-25
Rated 5 out of
5
by
Thraxmcbob from
1971 Blazer K5
Worked perfectly in a 1971 K5, 4WD, floor shift manual.
Did not need to modify the clutch linkage but my return spring rubbed a bit on one header tube so I used and throttle return spring and a hose clamp to shorten the spring route.
Date published: 2019-08-18
Rated 5 out of
5
by
Old Blazer from
Great product!
I replaced the stock exhaust manifolds on my '83 K5 Blazer. Easy to install, look and sound great. Great fit.
Date published: 2019-04-28
Rated 5 out of
5
by
Sbcchrisp from
Badass headers
Put these long tube hookers on my small block 350 and noticed a decent increase in power. Went from original exhaust to open headers and they sure make a difference. Hoping to get some mufflers soon though
Date published: 2018-05-06
Rated 5 out of
5
by
Krystal from
Great product
I'm happy with this product. I bought a month ago.
Date published: 2016-08-25
Rated 5 out of
5
by
smelly from
Excellent product
This product bolted right up and increased my horse power right away, no trimming or modifying brackets.
Date published: 2015-02-15
Rated 4 out of
5
by
Half dozen from
Good quality and fit.
I bought this for my 1987 K5 Blazer with a six inch lift. It's difficult to find a pair of headers that will clear the shackle hanger. These fit perfectly. The only modification needed was minimal grinding on the driver side motor mount to prevent possible contact.
Date published: 2016-09-20
Will these fit a 1983 Chevy S10 with a 350
No, depending on whether this is a 2wd or 4wd you will need these headers;
2wd - https://www.jegs.com/i/Hooker-Headers/520/2837/10002/-1
Date published: 2020-04-14
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