Chevy LS7 12° Heads 4.130 bore, 4.000 stroke, 6.125 rod, 1.115 CH, -25cc dish dome 1.2mm, 1.2mm, 3mm rings (CP Bullets BLSR1203-005)
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|
Make |
Chevrolet |
|
Engine Type |
LS7 Series |
|
Part Number |
BLSR1203-005 |
|
Bore (in) |
4.13 |
|
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 |
-25.12 |
|
Compression Ratio |
9 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.220 / SP |
|
Cubic Inch |
429 |
|
Piston Weight |
455 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS7 12° Heads 4.130 bore, 4.000 stroke, 6.125 rod, 1.115 CH, -25cc dish dome 1.2mm, 1.2mm, 3mm rings (CP Bullets BLSR1203-005) |
|---|---|
| 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 BLSR1203-005 pistons?
The BLSR1203-005 pistons are designed for a compression ratio of 9:1 when used with LS7 cylinder heads and a 70cc chamber. Ensure that your engine build accounts for this ratio to achieve optimal performance.
What are the specific machining requirements for the BLSR1203-005 pistons?
When installing the BLSR1203-005 pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, check that the ring gaps are properly set, as this is crucial for engine longevity and performance.
What is the weight of the BLSR1203-005 pistons and how does it affect performance?
The BLSR1203-005 pistons weigh 455 grams each. This weight is suitable for performance applications, but keep in mind that lighter pistons can improve engine response and RPM capabilities. Balance the rotating assembly for best results.
Can I use the BLSR1203-005 pistons with aftermarket rods?
Yes, the BLSR1203-005 pistons can be used with aftermarket rods as long as the rod length is 6.125 inches and the pin size is compatible. Always verify the fitment and clearances during assembly.
What type of rings are included with the BLSR1203-005 pistons?
The BLSR1203-005 pistons come with 1.2mm x 1.2mm x 3.0mm rings. Ensure that these rings are installed correctly and that the ring gaps are set according to your engine's specifications for optimal performance.
