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#41865640
Big Block Chevy Weld Up Header Kit, 2 In Primary, 3.5 In Collector
- This big block Chevy weld up header kit features 2" primary tubes and 3-1/2" collectors for for racing and rodding applications
- Header flanges fit 396, 402, 427, 454, and 502 Chevy big block engines
- 18 gauge mild steel tubing allows for easy welding and fabircation
$258.99
/each
In Stock
Garage Sale alternatives: from $192.09
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Product Summary
Universal Fit, Roadster Header Tube Type, Steel, Raw
- This big block Chevy weld up header kit features 2" primary tubes and 3-1/2" collectors for for racing and rodding applications
- Header flanges fit 396, 402, 427, 454, and 502 Chevy big block engines
- 18 gauge mild steel tubing allows for easy welding and fabircation
- Kit includes 8 mandrel bent primary tubes, 2 pre-formed collectors, 2 extra thick oval port flanges, 2 gaskets, and 12 header bolts
- Mandrel bent tubing is full size throughout the bend to maximize flow and increase horsepower
Key Specs
| MFG. Part # | 41865640 |
| Header Tube Type | Roadster |
| Exhaust Port Shape | Round |
| Flange Style | Standard |
| Primary Tube Diameter | 2" |
Need To Know
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Return PolicySpeedway Motors 41865640 Details
Speedway Motors 41865640 Details
These B/B Chevy (BBC) headers feature 18 gauge mild steel designed for many racing and rodding applications where 396, 402, 427, 454 and 502 Chevy engines are used. Headers have a 2" diameter tube and 3-1/2" diameter collector. Kit includes eight mandrel-bent primary tubes, two pre-formed collectors, two extra-thick oval port flanges, two gaskets and twelve header bolts.
Designed for the seasoned, hands-on enthusiast, weld up headers will require some cutting, fitting and welding.
Charts
Header Dimension Chart (JPG)
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Speedway Motors 41865640 Specifications
Speedway Motors 41865640 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 41865640 |
| Brand | Speedway Motors |
| Header Tube Type | Roadster |
| Exhaust Port Shape | Round |
| Flange Style | Standard |
| Primary Tube Diameter | 2" |
| Material Type | Steel |
| Color | Natural |
| Weld-Up | Yes |
| Collector Diameter | 3-1/2 Inch |
| Finish | Raw |
| Gasket(s) Included | Yes |
| Collector Reducers Included | No |
| Collector Attachment Type | Slip fit |
| GENERAL | |
| Sold in Quantity | Kit |
| Collector Length | 12" |
| Flange Thickness | 0.31" |
| Port Height | 2.065" |
| Port Width | 2.065" |
Ratings & Reviews
4.8
16 Reviews
Customers commend the product for its high quality, practicality, and affordability, making it ideal for creating custom exhaust systems or headers. The included straight and curved pipe sections are seen as highly flexible for various designs, while the thick and precisely cut flanges ensure exceptional welds and add durability. The product's suitability for different car models including classic cars is also highlighted, although some fabrication knowledge appears crucial for best results. Some users suggested the product information could be more comprehensive, yet overall, customers find it an excellent value.
Ratings & Reviews
4.8
16 Reviews
Customers commend the product for its high quality, practicality, and affordability, making it ideal for creating custom exhaust systems or headers. The included straight and curved pipe sections are seen as highly flexible for various designs, while the thick and precisely cut flanges ensure exceptional welds and add durability. The product's suitability for different car models including classic cars is also highlighted, although some fabrication knowledge appears crucial for best results. Some users suggested the product information could be more comprehensive, yet overall, customers find it an excellent value.
4.8
16 reviews
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Most Liked Positive Review
5.0
Good purchase
Lots of pipe and bends to work with, only complaint would be the flanges i received were 5/16" thick instead of the advertised 3/8". Still a great kit for the price though.
Most Liked Negative Review
2.0
Not what I expected. not a build your own kit
Could not use it. Rather than build your own they were downdraft that were not welded
Filter by Ratings
Very nice set of headers. Would absolutely buy them again
5.0
5 months ago
Sinister_Motorsports77
Missouri
Verified
Very nice fitting. And fast shipping
Would Recommend
Definitely not for the faint of heart
5.0
3 years ago
69 Nova
Lincoln MI
Verified
Good luck with these if you don't have a good fabrication background
Would Recommend
Great product glad it was available from Speedway
5.0
4 years ago
Gord
Moffat Ontario Canada
Verified
Nothing wrong with this product. It was the most practical way to build an exhaust system for my 1937 Fiat Toppolino with a 502 GM in it and most likley the cheapest
Would Recommend
I would purchase this again
5.0
5 years ago
Bert
Indiana
Verified
Product worked well.
Would Recommend
Fit 1969 Dodge Dart 440 RB
5.0
6 years ago
Steve
Tijuana, Baja California, Mexico
Verified
These components were exactly what we needed to build the headers for our 1969 Dodge Dart 440 big block. The thickness made for good welds and within the curves was enough material to use different curved angles.
Would Recommend
Highest quality headers for unbeatable price
5.0
7 years ago
Boost Junky
San diego
Verified
This product is perfect to make quality headers or use the pre bent pipes to fabricate another stand alone exhaust kit or for turbo system plumbing like I did. It comes with several nice bends and straight pipe sections that work great for making a custom system for anything requiring 2 inch pipe. The flanges are thick and nicely cut. This kit came with good bolts, decent gaskets and nice collectors. I am very pleased with the purchase especially considering a hand full of u bends would exceed the cost of this complete kit.
Would Recommend
Good product, would purchase it again
5.0
8 years ago
Pop,s
Wenatchee washington, 98801
Verified
Cut the pipes up to fit thru running boards for rar rod, worked great ..
Would Recommend
Great product!
5.0
8 years ago
Billy
Houston, Tx.
Verified
These pipes are perfect for forming and fabbing a set of custom headers. My project is all custom so these bended pipes give me plenty of options for a unique design.
Would Recommend
These are high rate header kits
5.0
8 years ago
Rick
PA
Verified
I needed to make a set of headers for my pro street 540 bbc VW beetle,the header kits are hard to beat.They have nice & thick header flanges,the bends are not necked down like other kits.I have bought 2 kits & i'll be buying more of them.Keep up the great service.Thanks a bunch.
Would Recommend
Good product with a good price
5.0
9 years ago
Back Yard Hot Rods
McKinney Texas
Verified
I used this kit to build a nice set of downs wept zoomies, very happy
Would Recommend
Showing 10 of 16 reviews
Questions & Answers
Questions & Answers
5 Questions • 7 Answers
Have these been used in putting in a big block chevy into a 1996 s10 pickup ?
by Jody
• 7 years ago
1 answer
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Do these headers have any type of coating, like aluminized? Thank you, Robert..
by Robert
• 8 years ago
2 answers
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In this add, you show A picture of a SBC kit, witch is it. Add says, Big Block Chevy Weld Up Header Kit, 2 In Primary, 3.5 In Collector
by Bob aka/ divco13
• 10 years ago
1 answer
View Answer
Will these work for a BBc in a 1985 C15 pickup?
by Chipper9
• 11 years ago
1 answer
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Hi, what are the diameters of the pipes (single pipes and collector) in metric system (mm)?
by
• 14 years ago
2 answers
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5 of 5 questions shown