Chevy LS3 Dome +9.5cc All std 15 deg/ L92 4.070 bore, 4.125 stroke, 6.125 rod 13.5 to 1 Comp with 68cc head (CP Bullets BLS1129-005)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1129-005 |
|
Bore (in) |
4.07 |
|
Stroke (in) |
4.125 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.05 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
68 |
|
Dome / Dish Height |
0.175 |
|
Dom/Dish CC |
9.5 |
|
Compression Ratio |
13.5 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.200 / SP |
|
Cubic Inch |
429 |
|
Piston Weight |
448 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS3 Dome +9.5cc All std 15 deg/ L92 4.070 bore, 4.125 stroke, 6.125 rod 13.5 to 1 Comp with 68cc head (CP Bullets BLS1129-005) |
|---|---|
| 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 BLS1129-005 pistons?
The BLS1129-005 pistons are designed for a compression ratio of 13.5:1 when used with a 68cc head. Ensure that your engine's configuration matches this specification for optimal performance.
What bore and stroke dimensions are compatible with the BLS1129-005 pistons?
These pistons are compatible with a 4.070-inch bore and a 4.125-inch stroke. It's crucial to verify that your engine block is machined to these specifications to ensure proper fitment.
What type of valve reliefs do the BLS1129-005 pistons have?
The BLS1129-005 pistons feature two valve reliefs, which are designed to accommodate standard LS valve configurations. Ensure your cylinder heads are compatible with this design to avoid interference.
What is the weight of the BLS1129-005 pistons?
Each BLS1129-005 piston weighs 448 grams. When building your engine, consider this weight in relation to your rotating assembly for balance and performance.
What is the pin size for the BLS1129-005 pistons?
The BLS1129-005 pistons use a pin size of .927 inches with a length of 2.250 inches. Ensure your conrods are compatible with this pin size for proper assembly.
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