1955-1957 Small Block Chevy Chassis Headers, AHC Coated
1955-1957 Small Block Chevy Chassis Headers, AHC Coated
Speedway Motors

|

#930C7H

1955-1957 Small Block Chevy Chassis Headers, AHC Coated

  • 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)
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Finish:

Silver Ceramic

PlainStainless SteelChrome

$355.99

/set

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This part is Backordered. We estimate this item will ship on or before December 28th.

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Product Summary

Chassis Header Tube Type, Oval Exhaust Port Shape

  • 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
  • Armor Hot Coat® is a Speedway Motors custom ceramic heat proof coating that will keep the finish of these headers looking great for years to come
See more details

Key Specs

MFG. Part #930C7H
Header Tube TypeChassis
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
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Speedway Motors 930C7H Details

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.

Armor Hot Coat® (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. Armor Hot Coat® (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.

Charts

Warranty Information

Click for details

AHC Warning: AHC coatings will burn and be damaged at exhaust temperatures over 1300 degrees. A lean fuel mixture can generate exhaust temperatures exceeding 1700-1900 degrees. If the coating is damaged due to a lean condition, the coating will not be warranted, but can be recoated for a fee.

Not legal for sale or use in California on pollution controlled vehicles

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
CA Prop 65
CARB warning

Speedway Motors 930C7H Specifications

KEY SPECS
MFG. Part #930C7H
BrandSpeedway Motors
Header Tube TypeChassis
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeSteel
ColorSilver
Weld-UpNo
Collector Diameter2-1/2 Inch
FinishCeramic Coated
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedYes
Collector Reducer Exit Diameter2.25"
Collector Attachment Type3-bolt flange
GENERAL
Sold in QuantityPair
NotesIncludes a pair of reducers (2.50" to 2.25")
Collector Length4"
Flange Thickness.35"
Port Height1.66"
Port Width1.38"
Drivers Side Dimension A5.35"
Drivers Side Dimension B15.2"
Drivers Side Dimension C21"
Passenger Side Dimension A6.5"
Passenger Side Dimension B14.25"
Passenger Side Dimension C22.75"

Ratings & Reviews

4.6

17 Reviews

Overall Assessment

The product reviewed, presumably car headers, is praised for its excellent fit, quality finish, and affordability. Customers have confirmed its practicality in vehicles, particularly in a 1955 Chevy Belair 350 and a tri-five. They applaud the quality of the build and thick flanges. Some users noticed ground clearance improvements and appreciated the hardware kit that came with the product. The ceramic coating's visual appeal is a vital focus, enhancing the car's look to a show-quality level. Users recommended the product due to their comparative advantages like fit and usability. However, a few highlighted a spark plug clearance issue, possibly indicating space for improvement. Despite this, overall satisfaction notably outshines the minor complications.

Write A Review

4.6

17 reviews

5

13

4

2

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Most Liked Positive Review

5.0

Great set Of headers!!

I bought this set with all my parts in mind, original clurch linkage, aftermarket starter custom motor mounts, you name I had it. I had to install the driver's side from under the car, remove the bell crank clutch linkage and dipstick but after they were installed, they fit!! I couldn't belive how well they fit!! These things might not flow like my other set I had but the cars on airbags and I needed everything inside the chassis. Highly recommend!!

Most Liked Negative Review

2.0

Needs some modification

The manufacturer of this header needs to re-install it on a small block again and make corrections for spark plug clearance. It is no longer within specification. I have purchased two sets one in black and one in ceramic coated. Both have the same spark plug clearance problem. This could be corrected very easily when manufactured.

Filter by Ratings

They look great, but don't fit!

4.0

a year ago

George

Detroit

Verified

They really look good but the pipes are so close to the spark plug holes you can't put the 3 and 5 plugs in. I tried these on SBC with Edlbrock aluminum performer heads in a 55 chevy 210. I actually bought the same headers 3 or 4 years ago while I accumulated parts and when I finally tried them they fit worse than the new ones.

Would Not Recommend

Could've been packaged better

3.0

a year ago

Sam

Birmingham, Alabama

Verified

Product had some scratches on it from shipping upon delivery, due to lack of packaging around headers. Should've bought the blemished set for sale and saved some money, but the product installed flawlessly within minutes. Fitment is precise, I will need to either dent the collector where the idler arm is mounted, or cut the ends of the idler arm mounting bolts flush at the top of the nut for clearance (speedway power steering kit for 55 bel air) For a fraction of the price of the hedman long tubes, as well as being less complicated to install, these are a good choice. Highly recommend getting non finished to prevent heartache from shipping scars

Would Recommend

Nice price and a nice product

5.0

3 years ago

Chevy Jim

Louisville ,Ky

Verified

I bought these for my 55 Chevy Belair 350. I waited for 2 months but it was well worth it! Nice finish and fit.

Would Recommend

Street Rod build

5.0

6 years ago

Br423

Elkhorn Ne

Verified

Nice finish. Good price. Slow delivery.

Would Recommend

3/4 headers

5.0

8 years ago

The car guy

woodbury Mn.

Verified

I hope the headers will give me the ground clearance I need. Full length headers give very little clearance and hang below the frame.

Would Recommend

Love the Mid Length Headers. Well built and thick flanges.

5.0

9 years ago

Willie

Wichita KS

Verified

Fast shipping and easy to find and order!

Would Recommend

I would buy this again

4.0

9 years ago

jack

Bakersfield, Ca

Verified

great coating, nice hardware kit, thick flange, besides the steering arm problem they fit pretty good

Would Recommend

Great fitting headers

5.0

9 years ago

-

Southern California

Verified

Headers were easy to install. The fit was right on, just as described

Would Recommend

Needs some modification

2.0

9 years ago

By the book

Garretson SD

The manufacturer of this header needs to re-install it on a small block again and make corrections for spark plug clearance. It is no longer within specification. I have purchased two sets one in black and one in ceramic coated. Both have the same spark plug clearance problem. This could be corrected very easily when manufactured.

Would Not Recommend

Great Headers

5.0

10 years ago

Mo

Phila, PA

Very nice headers and very easy to install. Got these knowing i had aftermarket side motor mounts, and no problem. Would recommend these for any tri-five.

Would Recommend

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Showing 10 of 17 reviews

Questions & Answers

12 Questions • 10 Answers

I have a 1957 Belair 2dr HT originally with a 6cyl. Will be installing a Gen 1 350sbc. Original pitman arm, original steering box, 4 spd manual T-100, original clutch location, Edelbrock Performer heads (straight plugs). Prefer a 3/4 length or shorty header (bare steel). What header will fit this combination or what modifications need to be made? Also, what is it about Edelbrock heads that cause a problem with certain headers?

by Ron

• 8 years ago

1 answer

View Answer

I have a 1957 chevy with a 350 motor, 700r trans and 500 series steering box, floor shifter, the motor is located in the original position and stock steering linkage. Will these headers fit properly?

by Steve

• 9 years ago

1 answer

View Answer

hi, has anyone else who installed these headers have a problem with burning their plug wire boots? Ive been through 2 sets of wires already, used, header plugs and wire boot insulators and still continue to be burning the boots. Seems the pipes are too close to the plugs.

by John

• 10 years ago

1 answer

View Answer

will these work with 265 with gen/power steering and a tremec 5 speed, hydraulic clutch ,front mounts and stock suspension. If not what will?......thanks

by canadianscott

• 10 years ago

1 answer

View Answer

Will these headers work on a stock 265 engine with a 700 r4

by Frankman

• 11 years ago

1 answer

View Answer

i HAVE A 56 4 DOOR CHEVY BELLAIR AND I PUT A SHORT BLOCK 350 ENGINE AND I NEED TO KNOE WHAT TYPE OF HEADERS WILL FIT?

by ORLY

• 12 years ago

1 answer

View Answer

hi i have a 56 chevy with 69 350 using stock front motor mounts, 500 series power steering box, stock clutch linkage, motor is in stock location, with Richmond 5 speed. will these headers work?

by twin

• 12 years ago

1 answer

View Answer

Have a 57 Bel Air with items listed below and would like to know if header will work Automatic with Column shift Rack and Pinion Steering 84 350 Engine with Straight Plugs

by Bill2

• 12 years ago

1 answer

View Answer

i have 57 chevy 2 dr hardtop ,i install 1991 tpi motor ,im use stock sterring box i change the motor mount to install the tpi motor will these header

by venny

• 12 years ago

1 answer

View Answer

Will these headers work in my 1956 Chevy 210 (2 dr post) ? If not - what do you recommend ? Gen 1 SBC 350 - with side mounted engine mounts which shift the engine 3/4" forward to provide clearance for my HEI distributor... 700r4 automatic tranny 500 power steering box

by Beef

• 13 years ago

1 answer

View Answer

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Fitment

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

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  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

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  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • Gen 1 DZ Small Block Chevy

  • Gen 1 DZ Small Block Chevy

  • Gen 1 L14 Small Block Chevy

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

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  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

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  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

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  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 400

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  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 400

  • 2-Piece Rear Main Chevy 283

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

  • 2-Piece Rear Main Chevy 283

Customer Impersonation Script