CP Bullet LS 5.3L Pistons (15° Heads)
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CP Bullet Series Pistons
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Suit Chevrolet LS 5.3L (fit all 15° heads)
| Part Number | Bore | Stroke | Rod | Comp Height | Head Type | Head CC | Dome Height | Dish / Dome | C/R | Pin Dia | VR Depths | Type | VR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BLS1013-STD | 3.780 | 3.622 | 6.125 | 1.300 | Std 15 deg 5.3L | 62.0 | FT | -3.5cc | FT | .927 x 2.250 | .200 / SP | FT | 2 VR's |
| BLS1013-019 | 3.799 | 3.622 | 6.125 | 1.300 | Std 15 deg 5.3L | 62.0 | FT | -3.5cc | FT | .927 x 2.250 | .200 / SP | FT | 2 VR's |
| BLS1014-STD | 3.780 | 4.000 | 6.125 | 1.110 | Std 15 deg 5.3L | 62.0 | .100 | -13.1cc | 9.5:1 | .927 x 2.250 | .185 / .145 | Dish | 2 VR's |
| BLS1014-019 | 3.799 | 4.000 | 6.125 | 1.110 | Std 15 deg 5.3L | 62.0 | .100 | -13.1cc | 9.6:1 | .927 x 2.250 | .185 / .145 | Dish | 2 VR's |
| BLS1124-STD | 3.780 | 3.622 | 6.098 | 1.335 | Std 15 deg 5.3L | 62.0 | F.T | -3.1cc | 10.1:1 | .945 x 2.250 | .180 / .130 | FT | 2 VR's |
| BLS1124-019 | 3.799 | 3.622 | 6.098 | 1.335 | Std 15 deg 5.3L | 62.0 | F.T | -3.1cc | 10.2:1 | .945 x 2.250 | .180 / .130 | FT | 2 VR's |
Please note: All care is taken to provide the correct specifications; however Spool Imports is not responsible for any incorrect specifications listed. It is important to confirm your specifications with other available manufacturer resources before ordering any parts for an engine. If you need more information please contact [email protected]
Features Included:
- Pistons manufactured from 2618 alloy for strength and durability
- Balanced to + or – 1 gram
- Dual forced pin oilers
- Contact reduction grooves
- Accumulator Grooves
- Contemporary ring set included (Comes standard with 1.5mm x 1.5mm x 3.0mm ring pack that consists of High-grade Steel Gas Nitrided barrel faced tops with Taper Hook Groove Napier second rings and a 3-piece soft nitrided rail flex vent oils, specially designed for severe duty applications such as nitrous blowers and turbo engines.)
- Forged side relief
- Chromoly wrist pins with wire locks
- FEA designed forging
- Tight tolerances
- USA made
| Product Name | CP Bullet LS 5.3L Pistons (15° Heads) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chev LS 5.3L (15° Heads), GM / LS |
| Make | Chevrolet, GM, Holden, LS Chev |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What is the recommended bore size for the CP Bullet LS 5.3L pistons?
The CP Bullet LS 5.3L pistons are designed for a bore size of 3.780 inches. Ensure that your engine's bore is properly machined to this specification for optimal performance.
What compression ratios can I expect with the CP Bullet LS 5.3L pistons?
The compression ratios for the CP Bullet LS 5.3L pistons vary depending on the specific part number. For example, the BLS1014-STD has a compression ratio of approximately 9.5:1, while the BLS1124-STD offers around 10.1:1. Always confirm your engine's setup to achieve the desired compression.
What type of ring set is included with these pistons?
The CP Bullet LS 5.3L pistons come standard with a contemporary ring set consisting of a 1.5mm x 1.5mm x 3.0mm ring pack. This includes high-grade steel gas nitrided barrel faced tops, taper hook groove Napier second rings, and a three-piece soft nitrided rail flex vent oil ring, suitable for severe duty applications.
Are the CP Bullet LS 5.3L pistons suitable for boosted applications?
Yes, the CP Bullet LS 5.3L pistons are designed for severe duty applications, including those with nitrous, blowers, and turbo setups. However, ensure proper tuning, fuel quality, and clearances are maintained to maximise reliability.
What material are the CP Bullet LS 5.3L pistons made from?
These pistons are manufactured from 2618 alloy, which provides excellent strength and durability, making them suitable for high-performance applications.
