Product Summary

Crossover Header Tube Type, Square Exhaust Port Shape

  • 1 3/4" SB Chevy
  • Not 180 degree header
  • Standard port
  • Includes gaskets and header bolts
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Key Specs

MFG. Part #91013146
Header Tube TypeCrossover
Exhaust Port ShapeSquare
Flange StyleStandard
Primary Tube Diameter1-3/4"
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91013146 Details

Speedway small block Chevy crossover headers (not a 180° header). Good for use with mufflers.

  • 1-3/4" primaries
  • 3-1/2" collector
  • Standard port
  • Bare steel finish
  • Includes gaskets and header bolts

Item Details

3-1/2" Collector

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.

Speedway Motors 91013146 Specifications

KEY SPECS
MFG. Part #91013146
BrandSpeedway Motors
Header Tube TypeCrossover
Exhaust Port ShapeSquare
Flange StyleStandard
Primary Tube Diameter1-3/4"
Material TypeSteel
ColorNatural
Weld-UpNo
Collector Diameter3-1/2 Inch
FinishRaw
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedNo
Collector Attachment TypeSlip fit
GENERAL
Sold in QuantityPair
Collector Length8"
Flange Thickness0.31"
Port Height1.75"
Port Width1.38"
Drivers Side Dimension A6.3"
Drivers Side Dimension B7"
Drivers Side Dimension C33.75"
Passenger Side Dimension A6.95"
Passenger Side Dimension B9.32"
Passenger Side Dimension C41"

Ratings & Reviews

4.9

15 Reviews

Overall Assessment

Customers highly recommend Speedway's headers due to their high quality, practicality, and exceptional fit. These headers are praised as being the best on the market for their race car fitting and are celebrated for boosting horsepower. Additionally, their innovative design ensures clearance to prevent potential damage and reduces heat buildup, effectively increasing comfort during use. Numerous customers confirm successful use on a variety of vehicles. Despite occasional hardware hiccups, the product's abilities and affordable price make it a preferred choice over competing products.

4.9

15 reviews

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13

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i would buy it again

4.0

a year ago

spankey

bowling green ohio

Verified

they held up for what i needed them to to and worked great

Would Recommend

Yes definitely

5.0

3 years ago

Vinnie

Harris ny

Verified

Speedway is my go to race part store

Probably would buy again.

4.0

3 years ago

Eternal racer

NorCal

Verified

Fit as well as can be expected. Had to remove one roll bar mount and redo that. Warped manifold flanges will take a little more to fix and that was unexpected.

Would Recommend

great product

5.0

6 years ago

WILDMAN

HANOVER INDIANA

Verified

best on the market

Would Recommend

I will purchase another soon for my race car!!

5.0

7 years ago

Chief

Indianapolis Indiana

Verified

I use this every product on everything I own.

Would Recommend

Great fit tucked in the right places easy to install.

5.0

8 years ago

D44 Vintage

Milton Florida

Verified

Used to run down and outs open ended these headers helped on restarts from the time we put them on definitely make HP

Would Recommend

Headers over the top

5.0

8 years ago

Charlie Boy

Michigan

Verified

Just missing the bolts, but I can order them seperate.

Would Recommend

Fit great

5.0

9 years ago

Sr. Racer

Walloon lake

Verified

I haven't ran them yet . But they fit like a glove

Would Recommend

Great product at a affordable price

5.0

9 years ago

Blair

Mt.Airy Georgia

Verified

Fit with out any problems

Would Recommend

Thankful I found these

5.0

9 years ago

Gotta love racing

Michigan

Verified

Very pleased to have found this product I had been looking for a good while to find the right headers for my husband's racecar that would fit how they needed to which was a very difficult task. Reasonable price and fit perfectly and the car sounds amazing !!

Would Recommend

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Showing 10 of 15 reviews

Questions & Answers

9 Questions • 10 Answers

Can you guys get this header with 1 5/8 tubes

by Justin

• 9 years ago

1 answer

will these clear a powerglide trans?

by tulsa

• 10 years ago

1 answer

Will these headers fit in a Lefthander chassis?

by Johnny

• 10 years ago

1 answer

Will these fit vortec heads?

by Duece

• 10 years ago

1 answer

Will it work on metric chassis Monte Carlo w th350 trans ? In know that in have to cut firewall for header to go in

by deaf racer

• 11 years ago

1 answer

Will these clear everything? Such as the foot box the midplate chassis tubes etc on a 02 smileys modified running a Saginaw trans

by Rowdym7

• 11 years ago

1 answer

do these come down any by the ports

by daddydave

• 12 years ago

1 answer

Will these work with a powerglide and a flexplate safety shield?

by JMChevy

• 12 years ago

1 answer

Primary Tube Length What is the length (or range of lengths) of the primary tubes on this set of headers?

by 53ProStock

• 13 years ago

2 answers

9 of 9 questions shown

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