Chevy LS7 12° Heads 4.135 bore, 4.125 stroke, 6.125 rod, 1.055 CH, -5cc flat top 1.2mm, 1.2mm, 3mm rings (CP Bullets BLSR1205-010)
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|
Make |
Chevrolet |
|
Engine Type |
LS7 Series |
|
Part Number |
BLSR1205-010 |
|
Bore (in) |
4.135 |
|
Stroke (in) |
4.125 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.055 |
|
Head Type |
LS7 |
|
Head CC |
70 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-4.6 |
|
Compression Ratio |
11.5 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.220 / -.161 |
|
Cubic Inch |
443 |
|
Piston Weight |
469 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS7 12° Heads 4.135 bore, 4.125 stroke, 6.125 rod, 1.055 CH, -5cc flat top 1.2mm, 1.2mm, 3mm rings (CP Bullets BLSR1205-010) |
|---|---|
| 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 BLSR1205-010 pistons?
The BLSR1205-010 pistons are designed for a compression ratio of 11.5:1 when used with LS7 heads. Ensure that your engine build maintains this ratio for optimal performance.
What are the specific ring thicknesses for the BLSR1205-010 pistons?
The BLSR1205-010 pistons come with ring thicknesses of 1.2mm for both the top and second rings, and a 3.0mm oil ring. Proper installation and gap settings are crucial for performance.
What is the pin size for the BLSR1205-010 pistons?
The BLSR1205-010 pistons feature a pin size of .927 inches with a length of 2.250 inches. Ensure compatibility with your connecting rods when assembling your engine.
Do the BLSR1205-010 pistons require any specific machining?
Yes, the BLSR1205-010 pistons may require specific bore clearances and ring gap settings based on your engine's specifications. Always consult with your engine builder for precise machining requirements.
What is the weight of the BLSR1205-010 pistons?
Each BLSR1205-010 piston weighs 469 grams. It's important to consider this weight in your engine's overall balance and rotating assembly setup.
