TRI-Y Exhaust Headers 1-3/4" Primary
Suit Holden HQ-WB S/B 283-400 Chev

Application: Suit Holden HQ, HJ, HX, HZ, WB with S/B 283-400 Chev 283-400 V8 Manual & Automatic
P/Steering: Yes
Air Cond.: Yes
Oxy. Sen.: N/A
E.G.R.: N/A
Y Branch: N/A
Gasket: DSF 9
Prim. Pipe: 1-3/4" (44mm)
Sec. Pipe: 2" (51mm)
Outlet: 2-1/4" (57mm)
Fitting Time: 2 Hrs

* Will fit Turbo 400 automatic
* Will fit Powerglide auto
* Will only fit with original engine mounting spacers or Pacemaker spacers Part Number PEMP 350
NOTE: spacers must be fitted on correct side of vehicle. (RH spacer is 1-3/4" high. LH spacer is 1-1/4" high)
* Will not fit slant plug heads

Pacemaker are the pioneers of quality headers featuring the Mandrel bend system. Pacemaker's modern workshop incorporates the very latest equipment available, including quality computerised benders with revolutionary, patented, vertebrate type mandrel, ensuring perfectly round bends, previously unavailable in Australia. Pacemaker are the only Australian header manufacturer to manufacture their products with pipe over the cone design. The advantages are there is no protruding inside the collector cone, therefore increasing exhaust gas flow and eliminating turbulence inside the exhaust header. The result is better gas flow and increased horsepower.

• Precision cut and machined thick flanges to eliminate leaking and warpage
• All headers are jig welded for guaranteed fitment and are checked prior to shipment
• Comprehensive fitting instructions with V8 sets, together with hi-tensile header bolts
• Emission hookups provided where applicable
• Primary pipes fitted through the flanges
• Heat proof finish tested to 1270°C