Chevy LS2 Dish -13.3cc All std 15 deg/ L92 4.005 bore, 3.622 stroke, 6.125 rod 9.1 to 1 Comp with 68cc head (CP Bullets BLS1140-005)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1140-005 |
|
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 |
-0.085 |
|
Dom/Dish CC |
-13.3 |
|
Compression Ratio |
9 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.200 / -.155 |
|
Cubic Inch |
365 |
|
Piston Weight |
466 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS2 Dish -13.3cc All std 15 deg/ L92 4.005 bore, 3.622 stroke, 6.125 rod 9.1 to 1 Comp with 68cc head (CP Bullets BLS1140-005) |
|---|---|
| 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 recommended compression ratio for the BLS1140-005 pistons?
The BLS1140-005 pistons are designed to achieve a compression ratio of 9.1:1 when used with a 68cc cylinder head. Ensure that the final compression ratio is verified based on your specific engine assembly and any modifications.
What bore and stroke specifications are compatible with the BLS1140-005 pistons?
These pistons are designed for a 4.005-inch bore and a 3.622-inch stroke. Ensure that your engine block is machined to these specifications for optimal performance.
What type of ring set is compatible with the BLS1140-005 pistons?
The BLS1140-005 pistons use a ring set with dimensions of 1.5mm x 1.5mm x 3.0mm. It's crucial to set the ring gaps according to your engine's specific requirements for proper sealing and performance.
What is the weight of the BLS1140-005 pistons, and how does it affect engine balance?
The BLS1140-005 pistons weigh 466 grams each. When building your engine, consider the total rotating assembly weight to ensure proper balance and performance, especially at higher RPMs.
Do the BLS1140-005 pistons require any specific machining before installation?
Yes, the BLS1140-005 pistons may require specific machining for bore clearance and ring gap settings. Always consult with your engine builder to ensure proper fitment and performance.
