Small Block Chevy Dome +5cc All 23 Heads 4.165 Bore,4.000 stroke, 6.000 rod 13.9 to 1 comp with a 62cc head (CP Bullets BC1112-040)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BC1112-040 |
|
Bore (in) |
4.165 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6 |
|
Comp Height |
1 |
|
Head Type |
All 23 deg |
|
Head CC |
62 |
|
Dome / Dish Height |
0.24 |
|
Dom/Dish CC |
5.1 |
|
Compression Ratio |
13.9 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.310 / -.310 |
|
Cubic Inch |
436 |
|
Piston Weight |
432 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Chevy Dome +5cc All 23 Heads 4.165 Bore,4.000 stroke, 6.000 rod 13.9 to 1 comp with a 62cc head (CP Bullets BC1112-040) |
|---|---|
| Brands | CP Carrillo |
| 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 bore clearance for the BC1112-040 pistons?
For the BC1112-040 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this can vary based on your specific engine build and operating conditions, so it's best to consult with your engine builder for precise specifications.
What compression ratio can I expect with these pistons and a 62cc head?
The BC1112-040 pistons are designed to achieve a compression ratio of approximately 13.9:1 when used with a 62cc cylinder head. Keep in mind that actual compression can be affected by factors such as head gasket thickness and combustion chamber modifications.
What type of valve reliefs do the BC1112-040 pistons have?
The BC1112-040 pistons feature two valve reliefs, which are designed to accommodate typical camshaft profiles in Small Block Chevy applications. Ensure that your camshaft specifications align with these reliefs to avoid potential interference.
What is the weight of the BC1112-040 pistons and how does it affect my build?
The BC1112-040 pistons weigh 432 grams each. This weight is relatively light for performance applications, which can help reduce reciprocating mass and improve engine response. However, ensure your connecting rods and crankshaft are rated for the intended RPM and power levels.
Are there any specific machining requirements for the BC1112-040 pistons?
Yes, the BC1112-040 pistons may require specific machining for the pin bores and ring grooves to ensure proper fitment and performance. It's essential to check the pin fit and ring gap settings during assembly to achieve optimal performance and reliability.
