Chevy LS7 12° Heads 4.155 bore, 4.000 stroke, 6.125 rod, 1.115 CH, -25cc dish dome 1.2mm, 1.2mm, 3mm rings (CP Bullets BLSR1203-030)
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|
Make |
Chevrolet |
|
Engine Type |
LS7 Series |
|
Part Number |
BLSR1203-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.115 |
|
Head Type |
LS7 |
|
Head CC |
70 |
|
Dome / Dish Height |
0.163 |
|
Dom/Dish CC |
-25.13 |
|
Compression Ratio |
9.3 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.220 / SP |
|
Cubic Inch |
434 |
|
Piston Weight |
463 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS7 12° Heads 4.155 bore, 4.000 stroke, 6.125 rod, 1.115 CH, -25cc dish dome 1.2mm, 1.2mm, 3mm rings (CP Bullets BLSR1203-030) |
|---|---|
| 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 compression ratio for the BLSR1203-030 pistons?
The BLSR1203-030 pistons are designed for a compression ratio of approximately 9.3:1 when used with LS7 heads and a suitable engine setup. Ensure that your engine builder verifies this based on your specific configuration and fuel type.
What is the significance of the -25.13cc dish volume on these pistons?
The -25.13cc dish volume helps to lower the overall compression ratio, making these pistons suitable for applications where lower compression is desired, such as forced induction setups. Always confirm compatibility with your engine's specifications.
What are the specific ring thicknesses for the BLSR1203-030 pistons?
The BLSR1203-030 pistons come with 1.2mm x 1.2mm x 3.0mm ring thicknesses. Ensure that your engine builder sets the correct ring gaps according to your application and performance goals.
What is the weight of the BLSR1203-030 pistons and how does it affect performance?
Each BLSR1203-030 piston weighs 463 grams. This weight can influence engine balance and performance, particularly in high RPM applications. It's crucial to consider this weight in conjunction with the entire rotating assembly for optimal performance.
Are there any specific machining requirements for the BLSR1203-030 pistons?
Yes, these pistons may require specific bore clearances to ensure proper fitment and performance. It's essential to work with your engine builder to verify the correct clearances and ensure the pistons are installed correctly for optimal performance.
