Pay in installments of $130.44 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Pacemaker | Tuned Competition Headers | Holden HQ-WB SBC 283-400 V8 Swap | PH 5315 L/RPacemaker Tuned Competition Headers Holden HQ HJ HX HZ WB Small Block Chev V8 PH 5315 L R Enhance the performance of your Chevrolet powered classic Holden with these high quality Pacemaker Tuned Competition headers. Designed specifically for the HQ through WB series fitted with Small Block Chev (SBC) V8 engines (283 to 400 cubic inches), these 4 into 1 headers provide excellent exhaust flow and engine breathing. The "Tuned" design is engineered to
Pacemaker Tuned Competition Headers - Holden HQ-HJ-HX-HZ-WB Small Block Chev V8 - PH 5315 L/R
Enhance the performance of your Chevrolet-powered classic Holden with these high-quality Pacemaker Tuned Competition headers. Designed specifically for the HQ through WB series fitted with Small Block Chev (SBC) V8 engines (283 to 400 cubic inches), these 4-into-1 headers provide excellent exhaust flow and engine breathing. The "Tuned" design is engineered to deliver a balanced increase in power and torque, making them ideal for both street cruisers and performance-oriented builds.
Features:
This product offers the following high-performance features:
- 4-into-1 Tuned Design: Calculated pipe lengths ensure optimal exhaust scavenging for improved engine efficiency and sound.
- Mandrel Bent Tubing: Precision mandrel bends maintain constant pipe diameter throughout, preventing flow restrictions.
- Slant Plug Compatibility: Engineered to provide necessary clearance for cylinder heads with slant spark plug configurations.
- Quality Construction: Built to Pacemaker’s rigorous standards for a precision fit and long-term durability in the engine bay.
Product Specifications for PH 5315
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5315 | Gasket | DSF 9 |
| P/Steering | Yes | Primary Pipe | 1⅝" (41mm) |
| Air Con | No | Secondary Pipe | - |
| Oxy Sen | N/A | Outlet | 3" (76mm) |
| E.G.R | N/A | Fitting Time | 2 Hrs |
| Design | Tuned 4-into-1 | Engine | Small Block Chev |
Important Notes:
- Mounting Requirements: Will only fit with original engine mounting spacers or PACEMAKER spacers (Part # PEMP 350). Note: Spacers must be fitted on the correct side (RH is 1¾” high, LH is 1¼” high).
- Transmission Compatibility: Will fit Turbo 400 automatic. Will NOT fit column automatic or Powerglide Auto.
- Cylinder Head Fitment: Will fit slant plug heads. Will NOT fit with raised port heads.
- Air Conditioning: This product is not compatible with Air Conditioning systems.
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
Vehicle Applications for PH 5315 L/R
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN (SBC SWAP) | ||||||||
| Holden | Kingswood / Monaro | 1971 | 1980 | Sedan / Coupe / Wagon / Ute | HQ, HJ, HX, HZ | SBC V8 (283-400) | Floor Shift Man & Auto | RWD |
| Holden | Statesman / One Tonner | 1980 | 1985 | LWB Sedan / Cab-Chassis | WB | SBC V8 (283-400) | Floor Shift Man & Auto | RWD |
Warranty Information
| Product | Warranty Period |
|---|---|
| Pacemaker Headers | Two (2) years. |
| Pacemaker King Brown 4x4 Exhaust systems | Five (5) years. |
| Pacemaker Sports exhaust systems | Five (5) years. |
| Fabrication products and accessories | One (1) year. |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 17 reviews
Sort
Product Reviews
★★★★★ 5
BEST, MOST COMFORTABLE PILLOWS EVER!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I've used others.BEST PILLOWS EVER! Firm, cooling and supportive. LOVE THESE!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 4
Comfortable and Supportive, but Adjust the Filling
Color: White-cooling Basic, Size: Queen(Pack of 2), Color: White-cooling Basic, Size: Queen(Pack of 2)
I’m very happy with this pillow. The size is big and it feels soft while still providing good support, perfect for midnight scrolling on TikTok.
One thing to keep in mind is that it can feel a little too tall if you use all of the filling that comes with it. The good news is that you can easily adjust the amount of filling to find the height that works best for your sleeping position. Once I customized it, it was much more comfortable.
Overall, great quality, comfortable, and worth the purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
★★★★★ 5
BEST PILLOWS EVER!!!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I am very picky with my pillows because I have a bad neck and I can never seem to find a good pillow. But I tried this pillow because it had everything I was looking for and the price was great! You get two of them and they are absolutely awesome.! normally I would need to lay on two pillows to try and get comfortable but with these pillows I just lay on one and I wake up with no neck pain. They really have a nice cooling effect. They actually puff up immediately after opening them. All you have to do is just shake them up and the pillow just puffs straight up.. It comes with extra cushioning if you want it to make it firmer and if you don’t want it as firm as it is, you can actually take some out. It really is such a beautiful pillow. It’s perfect in every way to me being such a picky pillow person.
You just lay your head down on it and it forms around your neck and your head and when you get up, it goes right back to its normal form. It doesn’t get flat and I love it. I completely recommend this to anyone who is a person who has a hard time finding a really good pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
★★★★★ 5
Top of the line, best pillows Ive ever had
Color: White-cooling Basic, Size: Queen(Pack of 2)
These pillows are top of the line! I bought them in 2024 and they are still fluffy. When they lose a little fluff, you just punch em around a little bit and voila, like new again. They have kept their shape cery well and do great for cooling. I haven't had to add more filling yet either. I just laid my head on one and thought, I need to do a review cause everytime i lay on these pillows its like clouds. My head is heavy and this is relief :-D
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 3
Weird smell
Color: White-cooling Basic, Size: Queen(Pack of 2)
The pillows are great for someone looking for something cool and comfortable. We loved them so much that we bought a second pair. However, we were seriously disappointed with the odor of our last purchase. They give off a strong and indescribable chemical/burning plastic smell so nauseating that it’s difficult to sleep with. We’re hoping this issue will resolve with a couple more washes of the pillow cases, but am worried the source is the stuffing itself.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
recommand products
Barshi, India Fence Vector Illustration | City Entrance Gate Clipart | Editable SVG, PNG, EPS, AI, PDF | Architecture & Landmark Design
11.00
Banshra, India Fence Vector Illustration | City Entrance Gate Clipart | Editable SVG, PNG, EPS, AI, PDF | Architecture & Landmark Design
11.00
Barhi, India Fence Vector Illustration | City Entrance Gate Clipart | Editable SVG, PNG, EPS, AI, PDF | Architecture & Landmark Design
11.00
Balotra, India Fence Vector Illustration | City Entrance Gate Clipart | Editable SVG, PNG, EPS, AI, PDF | Architecture & Landmark Design
11.00
Basaria, India Fence Vector Illustration | City Entrance Gate Clipart | Editable SVG, PNG, EPS, AI, PDF | Architecture & Landmark Design
11.00