Chevy LS7 Dome +5cc All 12 deg LS7/ 4.155 bore, 4.125 stroke, 6.125 rod 13.7 to 1 Comp with 66.5cc head (CP Bullets BLS1201-030)
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|
Make |
Chevrolet |
|
Engine Type |
LS7 Series |
|
Part Number |
BLS1201-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
4.125 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.055 |
|
Head Type |
LS7 |
|
Head CC |
66.5 |
|
Dome / Dish Height |
0.175 |
|
Dom/Dish CC |
5 |
|
Compression Ratio |
13.7 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.220 / SP |
|
Cubic Inch |
446 |
|
Piston Weight |
458 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS7 Dome +5cc All 12 deg LS7/ 4.155 bore, 4.125 stroke, 6.125 rod 13.7 to 1 Comp with 66.5cc head (CP Bullets BLS1201-030) |
|---|---|
| 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 BLS1201-030 pistons?
The BLS1201-030 pistons are designed for a compression ratio of 13.7:1 when used with a 66.5cc LS7 head. Ensure that your engine is properly tuned to handle this compression level.
What bore and stroke specifications are compatible with the BLS1201-030 pistons?
These pistons are designed for a bore of 4.155 inches and a stroke of 4.125 inches, making them suitable for a 446 cubic inch LS engine build.
What is the weight of the BLS1201-030 pistons?
The BLS1201-030 pistons weigh 458 grams each. It's important to consider this weight in your engine's balancing process.
Do the BLS1201-030 pistons have valve reliefs?
Yes, the BLS1201-030 pistons feature two valve reliefs, which are essential for clearance with the LS7's valvetrain.
What is the dome height of the BLS1201-030 pistons?
The dome height for the BLS1201-030 pistons is 0.175 inches. This dimension is critical for achieving the desired compression ratio and overall engine performance.
