Product Summary

Chevy Small Block V8, Crossover Header Tube Type, Steel

  • Port height measures 1.7" and has a width of 1.5"
  • Has a squared-style port flange that is 1/4" thick
  • They have 1-3/4" primaries with a 3-1/2" collector
  • Features an all steel construction with a painted black finish
  • These headers are specifically designed for the Small Block Chevy Engines

Key Specs

MFG. Part #146
Header Tube TypeCrossover
FinishTemporary Paint
Material TypeSteel

Need To Know

This Product Will Ship Free

Shipping Policies & FAQs

Quick and Easy Returns

Return Policy


Schoenfeld Pavement Late Model Small Block Chevy (SBC) crossover headers. Not a 180° header. Good for use with mufflers.

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

Item Details

3-1/2" Collector


Guides & Documents

CARB Warning

For race/ off road use only

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. 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.


MFG. Part #146
Header Tube TypeCrossover
FinishTemporary Paint
Material TypeSteel
Flange StyleStandard
Primary Tube Diameter1-3/4"
Exhaust Port ShapeSquare
Collector Diameter3-1/2 Inch
Collector Length7.75"
Flange Thickness.25"
Port Height1.70"
Port Width1.50"
Drivers Side Dimension A6.50"
Drivers Side Dimension B9.50"
Drivers Side Dimension C41.00"
Passenger Side Dimension A6.25"
Passenger Side Dimension B9.00"
Passenger Side Dimension C33.00"
Hardware IncludedYes
Gasket(s) IncludedYes
Sold in QuantityPair
Collector Attachment TypeSlip fit
Collector Reducers IncludedNo