CP Bullet LS Pistons 4.100" Stroke (15° Heads)
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CP Bullet Series Pistons
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Suit Chevrolet LS 4.100" Stroke (15°Heads)
| Part Number | Bore | Stroke | Rod | Comp Height | Head Type | Head CC | Dome Height | Dish / Dome | C/R | Pin Dia | VR Depths | Weight | Type | VR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BLS1120-015 | 4.080 | 4.100 | 6.125 | 1.060 | Std 15 deg/ L92 | 64.0 | .0825 | -13.4cc | 10.8:1 | .927 x 2.250 | .200 / SP | 425 | Dish | 2 VR's |
| BLS1134-125 | 4.125 | 4.100 | 6.125 | 1.065 | Std 15 deg/ L92 | 68.0 | -.175 | -30cc | 9.1:1 | .927 x 2.250 | .265 / SP | 440 | Dish | 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 Pistons 4.100" Stroke (15° Heads) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chev LS (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 Pistons 4.100"?
The CP Bullet LS Pistons for a 4.100" stroke are designed for a bore size of 4.080". Ensure that your engine's bore is accurately machined to this specification for optimal performance.
What compression ratio can I expect with the BLS1120-015 pistons?
The BLS1120-015 pistons provide a compression ratio of approximately 10.8:1 when used with standard 15° heads and a 64cc combustion chamber. Always verify your specific engine setup to confirm this ratio.
What type of ring set comes with these pistons?
These pistons come standard with a contemporary ring set consisting of a 1.5mm x 1.5mm x 3.0mm configuration. This includes high-grade steel gas nitrided tops and specially designed second rings suitable for severe duty applications.
Are the CP Bullet LS Pistons suitable for high-performance applications?
Yes, the CP Bullet LS Pistons are manufactured from 2618 alloy and feature design elements like dual forced pin oilers and contact reduction grooves, making them suitable for high-performance applications, including nitrous and turbo setups.
What is the weight of the BLS1120-015 pistons?
The BLS1120-015 pistons weigh approximately 425 grams each. It's essential to consider this weight when balancing your rotating assembly for optimal engine performance.
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