Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.005 bore, 3.622 stroke, 6.125 rod 10.3 to 1 Comp with 68cc head (CP Bullets BLS1012-005)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1012-005 |
|
Bore (in) |
4.005 |
|
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 |
10.2 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
365 |
|
Piston Weight |
475 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS2 Flat top -2.7cc All std 15 deg/ L92 4.005 bore, 3.622 stroke, 6.125 rod 10.3 to 1 Comp with 68cc head (CP Bullets BLS1012-005) |
|---|---|
| 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 ideal bore and stroke combination for the BLS1012-005 pistons?
The BLS1012-005 pistons are designed for a 4.005 inch bore and a 3.622 inch stroke. This combination is typical for LS2 applications and helps achieve the specified compression ratio.
What compression ratio can I expect with the BLS1012-005 pistons and 68cc heads?
With the BLS1012-005 pistons, a 68cc head, and the standard configuration, you can expect a compression ratio of approximately 10.2:1. However, actual compression may vary based on the specific engine assembly and machining tolerances.
What is the recommended ring thickness for the BLS1012-005 pistons?
The BLS1012-005 pistons use a ring thickness of 1.5mm for the top two rings and 3.0mm for the oil control ring. Ensure proper installation and gap settings for optimal performance.
What is the weight of the BLS1012-005 pistons, and how does it affect engine performance?
Each BLS1012-005 piston weighs 475 grams. Lighter pistons can improve engine response and RPM capabilities, but it's crucial to balance them with the rest of the rotating assembly for reliability.
Are there any specific machining requirements for the BLS1012-005 pistons?
Yes, the BLS1012-005 pistons may require specific bore clearance and ring gap settings as determined by the engine builder. Always check with your machinist to ensure proper fitment and performance.
