UN-003

LS Swap 1-3/4" Primary Headers - Mid Length

WILL NOT SHIP TO CALIFORNIA

Pro Performance is proud to bring another winner to the classic truck table! These mid-length LS headers are built with 304 stainless steel for good looks and a long life, even in harsher climates. With 1 3/4" mandrel bent primary tubes and stepped, 3" V-band collectors, these headers perform as well as they look!

Intelligently designed for all GM LS engines with CNC-machined, 3/8" thick flanges, and the primary tube routing keeps things tucked in nicely to fit a variety of chassis designs.

Features:

  • 1 3/4" Primaries
  • 3" Collectors
  • Mandrel Bent Tubing
  • V-Band Collectors
  • Collector Extensions with O2 Sensor Bungs
  • Port Matched & CNC Machined Flanges
  • Polished 304 Stainless Steel
  • Graphite Manifold Gaskets Included

Note: Angle-boot plug wires are strongly recommended with these headers. Measure your length from the coil to the plug, and order them here.

Note: If using a 4L80E or Turbo 350/400 transmission, the bellhousing ears may need to be trimmed for header clearance. These headers are tucked in tight to fit into narrow chassis.

Tested Vehicle Applications:

  • 1960-87 Chevy/GMC C10 trucks and SUV
  • 1988-98 GM OBS C1500 & K1500

Customer Reviews

Based on 1 review
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K
Keagan Chaney
Quality pieces, no run time yet

Welds look good, merge looks good. They bolt up to the head as they should. I am running Holley engine stands on my 68 c10, wide frame rail. The passenger side header has 1/16” clearance, whereas the driver side has 3/8” clearance. Very pleased with the headers being bolt on, but will need to gain clearance between passenger side. But who is to say another set of Holley engine mounts may fit less closely. Overall A++