Small Block Chevy Dome +5cc All 23 Heads 4.040 Bore,3.500 stroke, 5.700 rod 11.4 to 1 comp with a 64cc head (CP Bullets BC1045-040)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BC1045-040 |
|
Bore (in) |
4.04 |
|
Stroke (in) |
3.5 |
|
Rod Length (in) |
5.7 |
|
Comp Height |
1.55 |
|
Head Type |
All 23 deg |
|
Head CC |
64 |
|
Dome / Dish Height |
0.255 |
|
Dom/Dish CC |
5.1 |
|
Compression Ratio |
11.3 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.310 / -.310 |
|
Cubic Inch |
359 |
|
Piston Weight |
478 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Chevy Dome +5cc All 23 Heads 4.040 Bore,3.500 stroke, 5.700 rod 11.4 to 1 comp with a 64cc head (CP Bullets BC1045-040) |
|---|---|
| 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 BC1045-040 pistons with a 64cc head?
The BC1045-040 pistons are designed to achieve a compression ratio of approximately 11.3 to 1 when used with a 64cc cylinder head. However, actual compression may vary based on specific engine assembly and machining tolerances.
What machining considerations should I keep in mind when using these pistons?
When installing the BC1045-040 pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, check that the ring gaps are appropriately set for your application, as this will affect performance and reliability.
Are there any specific requirements for the valve reliefs on the BC1045-040 pistons?
The BC1045-040 pistons feature two valve reliefs, which should be compatible with most 23-degree heads. However, it is essential to verify valve clearance during assembly, especially if using aftermarket camshafts or modified heads.
What is the weight of the BC1045-040 pistons and how does it affect engine performance?
The BC1045-040 pistons weigh 478 grams each. While this weight is suitable for performance applications, lighter pistons can improve engine response and reduce reciprocating mass. Consider your overall build strategy when selecting piston weight.
What is the significance of the dome height on the BC1045-040 pistons?
The dome height of 0.255 inches on the BC1045-040 pistons contributes to the overall compression ratio and combustion characteristics. This design is intended to enhance performance, but ensure that your engine's combustion chamber is compatible to avoid detonation issues.
