Chevy LS3 Dish -25.1cc All std 15 deg/ L92 4.080 bore, 4.000 stroke, 6.125 rod 9.1 to 1 Comp with 70cc head (CP Bullets BLS1128-015)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1128-015 |
|
Bore (in) |
4.08 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.11 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
70 |
|
Dome / Dish Height |
-0.172 |
|
Dom/Dish CC |
-25.1 |
|
Compression Ratio |
9.1 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.200 / SP |
|
Cubic Inch |
418 |
|
Piston Weight |
431 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS3 Dish -25.1cc All std 15 deg/ L92 4.080 bore, 4.000 stroke, 6.125 rod 9.1 to 1 Comp with 70cc head (CP Bullets BLS1128-015) |
|---|---|
| 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 BLS1128-015 pistons?
The BLS1128-015 pistons are designed to achieve a compression ratio of 9.1:1 when used with a 70cc cylinder head. Ensure that your engine's setup aligns with this specification for optimal performance.
What bore size is required for the BLS1128-015 pistons?
The BLS1128-015 pistons are designed for a 4.080-inch bore. Proper machining to this bore size is crucial for achieving the correct clearances and performance.
What is the weight of the BLS1128-015 pistons and how does it affect engine performance?
The BLS1128-015 pistons weigh 431 grams. Lighter pistons can improve engine response and reduce stress on the connecting rods, but ensure that your rotating assembly is balanced for reliability.
What type of valve reliefs do the BLS1128-015 pistons have?
The BLS1128-015 pistons feature two valve reliefs. This design is important for clearance with the LS3/L92 cylinder heads, especially at higher RPMs.
What ring thickness is used with the BLS1128-015 pistons?
The BLS1128-015 pistons use a ring thickness of 1.5mm x 1.5mm x 3.0mm. Ensure that your ring gaps are set appropriately for your specific application to maintain engine performance and longevity.
