Small Block Chevy Dome +5cc All 23 Heads 4.060 Bore,3.750 stroke, 6.000 rod 12.3 to 1 comp with a 64cc head (CP Bullets BC1042-060)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BC1042-060 |
|
Bore (in) |
4.06 |
|
Stroke (in) |
3.75 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.125 |
|
Head Type |
All 23 deg |
|
Head CC |
64 |
|
Dome / Dish Height |
0.25 |
|
Dom/Dish CC |
5.1 |
|
Compression Ratio |
12.4 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.310 / -.310 |
|
Cubic Inch |
388 |
|
Piston Weight |
422 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Chevy Dome +5cc All 23 Heads 4.060 Bore,3.750 stroke, 6.000 rod 12.3 to 1 comp with a 64cc head (CP Bullets BC1042-060) |
|---|---|
| Brands | CP Carrillo |
| Engine | SB Chevrolet / Holden |
| Make | GM |
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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 BC1042-060 pistons?
The BC1042-060 pistons are designed to achieve a compression ratio of approximately 12.4:1 when used with a 64cc head. However, actual compression can vary based on factors such as head gasket thickness and combustion chamber modifications.
What are the specific machining requirements for installing these pistons?
When installing the BC1042-060 pistons, ensure that the bore clearance is set correctly to accommodate the 4.060-inch diameter. Additionally, the ring gaps must be tailored to your specific application, considering the intended RPM and power levels.
What type of valve reliefs do the BC1042-060 pistons have?
The BC1042-060 pistons feature two valve reliefs, which are designed to provide clearance for the valves in a Small Block Chevy engine. It's crucial to verify that your specific cylinder head and camshaft combination will work without interference.
What is the weight of the BC1042-060 pistons, and how does it affect performance?
The BC1042-060 pistons weigh 422 grams each. While lighter pistons can improve engine response and reduce rotating mass, it's essential to balance them with the rest of the rotating assembly to maintain reliability and performance.
Can I use the BC1042-060 pistons with different head configurations?
The BC1042-060 pistons are specifically designed for use with all 23-degree heads. If you plan to use different head configurations, you must consider the combustion chamber volume and adjust the compression ratio accordingly.
