Chevy LS7 12° Heads 4.155 bore, 4.000 stroke, 6.125 rod, 1.120 CH, +5cc dome 1.2mm, 1.2mm, 3mm rings (CP Bullets BLSR1200-030)
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|
Make |
Chevrolet |
|
Engine Type |
LS7 Series |
|
Part Number |
BLSR1200-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.115 |
|
Head Type |
LS7 |
|
Head CC |
67.5 |
|
Dome / Dish Height |
0.175 |
|
Dom/Dish CC |
5 |
|
Compression Ratio |
13 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.220 / SP |
|
Cubic Inch |
434 |
|
Piston Weight |
523 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Chevy LS7 12° Heads 4.155 bore, 4.000 stroke, 6.125 rod, 1.120 CH, +5cc dome 1.2mm, 1.2mm, 3mm rings (CP Bullets BLSR1200-030) |
|---|---|
| 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 BLSR1200-030 pistons?
The BLSR1200-030 pistons are designed to achieve a compression ratio of 13:1 when used with LS7 cylinder heads and the specified bore and stroke. Ensure that your engine's configuration supports this ratio for optimal performance.
What are the specific machining requirements for the BLSR1200-030 pistons?
When using the BLSR1200-030 pistons, it's essential to ensure the correct bore clearance and ring gaps are set according to your engine's specifications. Additionally, verify that the cylinder bores are properly honed to accommodate the 4.155-inch diameter of these pistons.
What is the weight of the BLSR1200-030 pistons, and how does it affect performance?
The BLSR1200-030 pistons weigh 523 grams each. This weight is suitable for high-performance applications, but keep in mind that lighter pistons can improve engine responsiveness and reduce stress on the rotating assembly, especially at higher RPMs.
Do the BLSR1200-030 pistons include gas ports, and what is their purpose?
Yes, the BLSR1200-030 pistons come with gas ports. These ports help improve ring seal and reduce blow-by by allowing combustion gases to pressurise the ring pack, enhancing overall performance, especially in high-boost applications.
What type of valve reliefs do the BLSR1200-030 pistons have?
The BLSR1200-030 pistons feature two valve reliefs. This design is crucial for providing clearance for the valves during operation, particularly in high-performance setups where camshaft lift may be increased.
