Holden HQ-WB (1971-1985) HJ-HQ-HX-HZ- Chevrolet 283-400 Small Block V8 To Suit Holden HQ-WB 1 3/4" 4 into 1 Competition Headers
Holden HQ-WB (1971-1985) HJ-HQ-HX-HZ- Chevrolet 283-400 Small Block V8 To Suit Holden HQ-WB 1 3/4" 4 into 1 Competition Headers
For over 50 years, PACEMAKER has been renowned for its innovative exhaust headers crafted in Australia. The brand was the first to introduce mandrel-bending technology to the header market, revolutionizing the industry. PACEMAKER continues to push the bar, utilizing advanced technology to develop one of Australia's largest Tri-y and 4-into-1 catalogs. In 1997, PACEMAKER launched its Pipe Over Cone™ technology (copyrighted design number 135712) to reduce turbulence and extend the product's life.
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Pacemaker stocks quality headers featuring their "Mandrel Bend" System. Their cutting edge facility equips a computer-controlled Bender with a patented vertebrate-type mandrel, creating round bends previously inaccessible in Australia. Moreover, Pacemaker's headers come with precision laser-cut, machined flanges, jig-welded joints, hi-tensile bolts, big bore pipes, and emission hook-ups. For added protection, these headers are finished with a heat-proof finish tested up to 1270°, and feature Pipe Over Cone™ technology (copyright number 135712). This special technology increases exhaust gas flow, reducing turbulence within the header and resulting in improved power and performance. |
This product is designed to fit Holden HQ-WB Series: HJ-HQ-HX-HZ-.
Notes: Chevrolet 283-400 Small Block V8 To Suit Holden HQ-WB 1 3/4" 4 into 1 Competition Headers
• Will fit slant plug heads
• Will not fit column automatic or Powerglide Auto
• Will fit Turbo 400 automatic
• Will not fit with raised port heads
• 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 1¾” high, LH spacer is 1¼” high)
Product Specs
Part #: | PH 5325 | ||
P/Steering: | Yes | Gasket: | DSF 9 |
Air Con: | No | Primary Pipe: | 1¾" (44mm) |
Oxy Sen: | N/A | Secondary Pipe: | - |
E.G.R: | N/A | Outlet: | 3" (76mm) |
Y Branch: | N/A | Fitting Time: | 2 Hrs |
Specifications
- Direct bolt on fitment
- Mandrel bends
- All fitting hardware includes
- Australian made
- Warranty - 2 years on headers, 5 years on exhaust components.
Important Notes
Product Specs
Part #: | PH 5325 | ||
P/Steering: | Yes | Gasket: | DSF 9 |
Air Con: | No | Primary Pipe: | 1¾" (44mm) |
Oxy Sen: | N/A | Secondary Pipe: | - |
E.G.R: | N/A | Outlet: | 3" (76mm) |
Y Branch: | N/A | Fitting Time: | 2 Hrs |