1955-1957 Small Block Chevy Chassis Headers, AHC Coated

Description

Mid-length design offers maximum ground clearance, Designed to work with stock or 605 power steering box, Fits cars using an original V-8 pitman arm (some aftermarket arms may cause an interference), Will work with side engine mounts with engine in stock location, Fits standard and Vortec-style small-block Chevy heads (not D-port, LT-1 or ZZ-4)
1955-1957 Small Block Chevy Chassis Headers, AHC Coated
Sku # 930C7H
Mfr. Part # 930C7H
Condition
New
Brand
Speedway Motors
Sold
Set
Details
Notes
Armor Hot Coating (AHC) is a heat resistant, ceramic coating applied to the outside of the header. This coating will reflect heat, which helps retain more heat within the header tube while simultaneously speeding up the exhaust flow. Not only will this coating help you make more horsepower, it also keeps your headers rust-free, looking great, and lasting longer (when properly maintained).  If you are looking for a show-quality finish for your headers, this is it! Our AHC will withstand exhaust temperatures of up to 1300® F.
Info
These Speedway headers allow you to keep the exhaust system under your '55-'57 Chevy car. The "3/4-length" design provides more ground clearance than full-length headers, yet makes more power than "shorty" style headers. These chassis headers fit 283-400 S/B Chevy V8s and has 1-5/8" primary tubes with 2-1/2" collectors. These ceramic coated headers provide superior performance and durability.
Mid-length design offers maximum ground clearance
Designed to work with stock or 605 power steering box
Fits cars using an original V-8 pitman arm (some aftermarket arms may cause an interference)
Will work with side engine mounts with engine in stock location
Fits standard and Vortec-style small-block Chevy heads (not D-port, LT-1 or ZZ-4)
Does not work with stock clutch linkage
(Please use the chart below to help with dimensions.) Drivers side A dimension is 3-1/2" up by the head and 5-5/8" at the collector, B dimension is 15", and C dimension is 21". Passenger side A dimension is 4" at the head and 6-5/8" at the collector, B is 15", and C is 21".
NOTE:
These headers do not fit angle-plug heads. They do work with a "605"steering box. They work with most any bellhousing and most any motor mounts. Some aftermarket starters may be in the way. Designed to fit cars using an original V-8 pitman arm. Some aftermarket arms may cause an interference.
The use of a shorty spark plug may aide in clearance between the plug wire and header primary tubes.
Charts
Header Dimension Chart (JPG)
WARNING: Cancer and Reproductive Harm -- p65Warnings.ca.gov
California Customers: This part has been identified as emissions sensitive and can only legally be installed on race-use only vehicles, off-road-use only vehicles, or pre-1965 vehicles in the State of California in accordance with the California Air Resource Board (CARB) requirements. Once your order is placed you will be contacted by Speedway Motors within 2 business days so that you can certify that you will only use such parts on these types of vehicles in California.
Specs
Material Type
Steel
Sold in Quantity
Pair
Color
Silver
Header Tube Type
Chassis
Exhaust Port Shape
Oval
Notes
Includes a pair of reducers (2.50" to 2.25")
Gasket(s) Included
Yes
Hardware Included
Yes
Port Height
1.66
Port Width
1.38
Flange Thickness
.35
Drivers Side Dimension A
5.35
Drivers Side Dimension B
15.20
Drivers Side Dimension C
21.00
Passenger Side Dimension A
6.50
Passenger Side Dimension B
14.25
Passenger Side Dimension C
22.75
Collector Length
4
Finish
Ceramic Coated
Flange Style
Standard
Weld-Up
No
MFG. Part #
930C7H
Collector Diameter
2-1/2 Inch
Primary Tube Diameter
1-5/8"
Reviews
Street Rod build
Rated
by Br423 on August 04, 2020
Summary:
Nice finish. Good price. Slow delivery.
Cons:
Slow delivery
Pros:
Big money saver
Yes, I recommend this product.
3/4 headers
Rated
by The car guy on February 16, 2018
Summary:
I hope the headers will give me the ground clearance I need. Full length headers give very little clearance and hang below the frame.
Yes, I recommend this product.
I would buy this again
Rated
by jack on May 23, 2017
Summary:
great coating, nice hardware kit, thick flange, besides the steering arm problem they fit pretty good
Pros:
Easy To Set Up
Rugged Construction
Yes, I recommend this product.
Love the Mid Length Headers. Well built and thick flanges.
Rated
by Willie on May 23, 2017
Summary:
Fast shipping and easy to find and order!
Pros:
Rugged Construction
Yes, I recommend this product.
Great fitting headers
Rated
by - on February 15, 2017
Summary:
Headers were easy to install. The fit was right on, just as described
Pros:
Easy To Set Up
Rugged Construction
Yes, I recommend this product.
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Extreme Exhaust Gaskets, Small Block Chevy, 1-5/8 Inch Oval Port
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About
Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 69 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
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