Chevy LS3 Flat top -2.7cc All std 15 deg/ L92 4.065 bore, 4.000 stroke, 6.125 rod 11.5 to 1 Comp with 66cc head (CP Bullets BLS1123-STD)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1123-STD |
|
Bore (in) |
4.065 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.11 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
66 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-2.7 |
|
Compression Ratio |
11.5 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
415 |
|
Piston Weight |
419 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS3 Flat top -2.7cc All std 15 deg/ L92 4.065 bore, 4.000 stroke, 6.125 rod 11.5 to 1 Comp with 66cc head (CP Bullets BLS1123-STD) |
|---|---|
| Brands | CP Carrillo |
| Engine | GM / LS |
| Make | Chevrolet, GM, Holden, LS Chev |
Delivery & Freight
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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 and stroke for the BLS1123-STD pistons?
The BLS1123-STD pistons are designed for a 4.065-inch bore and a 4.000-inch stroke, making them suitable for a 415 cubic inch LS engine.
What compression ratio can I expect with the BLS1123-STD pistons and a 66cc head?
When used with a 66cc cylinder head, the BLS1123-STD pistons will yield a compression ratio of approximately 11.5:1. Ensure that your engine is properly tuned to handle this compression.
What is the weight of the BLS1123-STD pistons?
Each BLS1123-STD piston weighs 419 grams. This weight is important for maintaining balance in the rotating assembly.
Are there any specific machining requirements for the BLS1123-STD pistons?
Yes, it is essential to ensure the correct bore clearance is achieved during installation. Additionally, check ring gaps according to your specific build requirements.
What type of valve reliefs do the BLS1123-STD pistons have?
The BLS1123-STD pistons feature two valve reliefs, which are designed to accommodate typical LS valve configurations. Ensure compatibility with your specific cylinder head setup.
