Chevy All LS 15°/L92 -2.7cc Flat Top 4.125 bore 1.300 CH 10.6:1 CR with 68cc head (CP Bullets BLS1012-125)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1012-125 |
|
Bore (in) |
4.125 |
|
Stroke (in) |
3.622 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.3 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
68 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-2.7 |
|
Compression Ratio |
10.6 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
387 |
|
Piston Weight |
485 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy All LS 15°/L92 -2.7cc Flat Top 4.125 bore 1.300 CH 10.6:1 CR with 68cc head (CP Bullets BLS1012-125) |
|---|---|
| Brands | CP Carrillo |
| Engine | GM / LS |
| Make | Chevrolet, GM, Holden, LS Chev |
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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 clearance for the BLS1012-125 pistons?
For the BLS1012-125 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this can vary based on your specific engine build and application, so always consult with your engine builder for optimal results.
What compression ratio can I expect with the BLS1012-125 pistons?
The BLS1012-125 pistons are designed to achieve a compression ratio of 10.6:1 when used with a 68cc head. Keep in mind that actual compression may vary based on factors like head gasket thickness and combustion chamber modifications.
What type of ring gaps should I use for the BLS1012-125 pistons?
For the BLS1012-125 pistons, ring gaps should typically be set according to the manufacturer's recommendations and the intended use of the engine. A common starting point is 0.004" to 0.005" per inch of bore for the top ring and slightly larger for the second ring.
What is the weight of the BLS1012-125 pistons and how does it affect performance?
The BLS1012-125 pistons weigh 485 grams. While this weight is suitable for performance applications, lighter pistons can improve throttle response and reduce reciprocating mass. Consider your overall engine balance and intended use when selecting piston weight.
Do the BLS1012-125 pistons require any special machining?
Yes, the BLS1012-125 pistons may require specific machining for optimal fitment, such as honing the cylinder bores to achieve the correct clearance. Always consult with your engine builder to ensure proper fit and performance.
