Chevrolet LS L92/All 15° Heads, 4.070 bore, 4.000 stroke, 6.125 rod, 1.110 CH, -11.2cc dish, 1.2mm, 1.2mm, 3.0mm rings (CP Bullets BLSR1007-005)
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|
Make |
Chevrolet |
|
Engine Type |
LS2 Series |
|
Part Number |
BLSR1007-005 |
|
Bore (in) |
4.07 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.11 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
70 |
|
Dome / Dish Height |
-0.07 |
|
Dom/Dish CC |
-11.2 |
|
Compression Ratio |
9.9 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.200 / SP |
|
Cubic Inch |
416 |
|
Piston Weight |
443 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Chevrolet LS L92/All 15° Heads, 4.070 bore, 4.000 stroke, 6.125 rod, 1.110 CH, -11.2cc dish, 1.2mm, 1.2mm, 3.0mm rings (CP Bullets BLSR1007-005) |
|---|---|
| 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 BLSR1007-005 pistons?
The BLSR1007-005 pistons have a compression ratio of 9.9:1 when used with standard L92 heads with a 70cc chamber. This ratio is suitable for a balance of performance and reliability, but ensure that your engine build is optimised for the intended application.
What is the significance of the -11.2cc dish in these pistons?
The -11.2cc dish helps lower the compression ratio, making these pistons suitable for applications where lower compression is desired, such as in forced induction setups. This design also aids in valve clearance and combustion efficiency.
What are the specific machining requirements for the BLSR1007-005 pistons?
When installing the BLSR1007-005 pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, check that the ring gaps are set appropriately for your application, as this will affect performance and reliability.
What type of rings are included with the BLSR1007-005 pistons?
The BLSR1007-005 pistons come with 1.2mm, 1.2mm, and 3.0mm rings. These sizes are designed to provide optimal sealing and performance for high-performance applications, but proper ring gap settings are essential for your specific build.
What is the piston weight of the BLSR1007-005, and how does it affect performance?
The BLSR1007-005 pistons weigh 443 grams. While lighter pistons can improve throttle response and reduce reciprocating mass, it's important to balance them with the rest of the rotating assembly to maintain engine reliability and performance.
