Speedway Economy Ford Flathead V8 Exhaust Headers, Raw Finish
Speedway Economy Ford Flathead V8 Exhaust Headers, Raw Finish
Speedway Motors

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#91013606

Speedway Economy Ford Flathead V8 Exhaust Headers, Raw Finish

  • Fits '37-'41 cars with Vega steering and '42-'48 with stock steering
  • Gaskets and bolts included
  • Can easily be modified to work in a variety of chassis
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$223.99

/pair

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Product Summary

Universal Fit, Shorty Header Tube Type, Steel, Natural

  • Fits '37-'41 cars with Vega steering and '42-'48 with stock steering
  • Gaskets and bolts included
  • Can easily be modified to work in a variety of chassis
  • These headers are treated with a temporary, light coating of anti-corrosion paint to avoid rust during shipment and on the shelf
  • Coating can be removed with lacquer thinner
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Key Specs

MFG. Part #91013606
Header Tube TypeShorty
Exhaust Port ShapeRound
Flange StyleStandard
Primary Tube Diameter1-3/4"
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Need To Know

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Speedway Motors 91013606 Details

Economy Flathead V8 Headers fit 1937-41 cars with Vega steering and 1942-48 cars with stock steering.  These headers are painted black, and include gaskets and bolts.

Application

  • These probably won't fit Model T or A due to narrow frame width, particularly on passenger side.
  • These headers also may not work with stock steering on 1932-1934 cars, but are okay with the Vega cross-steer setup.
  • They work well in 1935-1941 Fords using our #91632003 mount bracket and Vega box.
  • 1942-1948 cars will probably require shimming of motor mounts to clear steering linkage.
  • Most 1949-1951 applications will have fitting problems due to interference with steering box and/or linkage.
  • On pickups the steering box can normally be clearenced slightly so that the headers can be used.

Charts

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 91013606 Specifications

KEY SPECS
MFG. Part #91013606
BrandSpeedway Motors
Header Tube TypeShorty
Exhaust Port ShapeRound
Flange StyleStandard
Primary Tube Diameter1-3/4"
Material TypeSteel
ColorNatural
Weld-UpNo
Collector Diameter1-3/4 Inch
FinishRaw
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedNo
GENERAL
Sold in QuantityPair
Flange Thickness.30"
Port Height1.63"
Port Width1.63"
Drivers Side Dimension A7"
Drivers Side Dimension B6.83"
Drivers Side Dimension C18"
Passenger Side Dimension A7"
Passenger Side Dimension B0"
Passenger Side Dimension C20.25"

Ratings & Reviews

4.5

37 Reviews

Overall Assessment

Customers appreciate our product's excellent fit and finish, alluding to its high quality and practicability. Notably praised for its clear enhancements to car exhaust conversions, users have found it being a cost-effective and efficient in improving engine sound and performance. Some customers noted minor issues with fit around certain car models & steering boxes, recommending minor modifications for improved installation. However, the consensus acknowledges the impressive fit for many types of vehicles. This product has been consistently recommended for its durability, affordability, and performance enhancement.

Write A Review

4.5

37 reviews

5

25

4

8

3

3

2

0

1

1

Most Liked Positive Review

5.0

Exellent Product

Installed on a restored 1946 Ford coupe. Looks great, adds zip. Cool sound.

Most Liked Negative Review

3.0

Fits but takes some work

I replaced the stock steering box in a '39 Ford with a Flaming River Vega box using the Speeday mounting bracket that was called for. The flathead V8 is in the stock location. These headers almost fit but had a couple of problems. The center tube hit the top edge of the steering box and had to be dimpled with a torch for clearance. Second, the header dumps straight down below the frame rather than back through the frame (compare the Speedway picture to the attached picture). Routing this way could produce clearance problems with the wishbone. I had to cut and build an end on the header to match up with existing dual exhaust. I don't know of any other headers that would with this configuration. I would recommend this to someone as long as they know there might be some work requires to fit their application. Pictures are attached.

Filter by Ratings

No

3.0

4 months ago

Art

Ozark Mo.

Verified

Did not fit. Needs to be modified. Quit using china crap. Your dad did not do that.

Would Not Recommend

Well worth the money

5.0

10 months ago

Dusty

Thompson, CT

Verified

These fit great in my 32 Ford vintage race car.

Would Recommend

Great for mock up but not for use.

3.0

a year ago

JA

Sunnyvale

Verified

I purchased this to use on my 8BA flathead, which is ported and polished for better flow. The price is right, but these headers have odd shaped cutouts where the tubes from the flange meet the main tube. They are about 30% blocked as the cut in the main tube does not match the diameter of the welded tube. I think it works great for mockup, but I think it would restrict flow in use, so I wouldn't use it. I may use them on another "stock" flathead that I have to see if they work, but I won't use them on my rebuilt 8BA.

Would Not Recommend

works real well

5.0

3 years ago

N/A

Detroit MI

Verified

bolted right in. great for duall exhaust conversion

Would Recommend

Nice quality fit and finish, with a great price!

5.0

3 years ago

Cruisetopdown

Waterford VA

Verified

Clean set up for cars with flatheads

Would Recommend

yes

5.0

4 years ago

Butch

Williamsburg Va.

Verified

.

Would Recommend

I would buy this product again

4.0

4 years ago

Ken

West Richland, Wa

Verified

Had to "tweek" the header to clear the GM 525 gear box that I also bought from Speedway.

Would Recommend

Yes would buy again

5.0

4 years ago

Moose

Indiana

Verified

None

Would Recommend

I looks great on my 1948 v8 flathead engine

5.0

4 years ago

dusty

Compton

Verified

They should check all items so we wouldn't get anyting defective from Factory

Would Recommend

Yes I would buy this product again.

4.0

5 years ago

Zeb

La Follette, TN

Verified

I bought these headers to put on my 1935 Ford flathead V8 engine and they are great.

Would Recommend

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Showing 10 of 37 reviews

Questions & Answers

24 Questions • 15 Answers

hi will these fit a 51 f7 right hand drive Thank you

by stu

• 7 years ago

1 answer

View Answer

I have a 1950 Mercury four door with the stock v8 flathead in it. It was a three in the tree but I have since removed the three in the tree part and put a five on the floor in it. I would like to do a set of lake pipes on my car, will these headers work or do you have another suggestion?

by Jeremiah

• 7 years ago

1 answer

View Answer

Will these fit on a 1950 337 flathead V8 on a Ford F7?

by medsteve

• 7 years ago

1 answer

View Answer

Is it compatible with the 1941 Ford Coupe with stock steering?

by Rafael

• 7 years ago

1 answer

View Answer

Will these headers fit on a all stock 53 f100 flathead truck?

by Hope you say yes.

• 8 years ago

2 answers

View Answers

Any modifications needed for installing on my 1947 F-1 1/2 ton pickup

by Ray the Truck Builder

• 8 years ago

4 answers

View Answers

The collector dia. 1 3/4 " is that OD or ID?

by John

• 8 years ago

1 answer

View Answer

Will these work on a 1953 Ford Customline with flat head 8?

by Coop

• 9 years ago

2 answers

View Answers

will these fit in a 1952 ford chrestline v8 flathead without much truble

by mike

• 10 years ago

1 answer

View Answer

Will these fit a 1950 Ford Coupe with stock Flathead?

by scot

• 10 years ago

1 answer

View Answer

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10 of 24 questions shown

Fitment

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • Ford Flathead V8 17 Stud 221 18

  • Ford Flathead V8 21 Stud 221 40

  • Ford Flathead V8 17 Stud 136 V8-60

  • Ford Flathead V8 17 Stud 136 74

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 136 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 136 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

Customer Impersonation Script