BCR1220-STD Chevy 414ci ASCS 4.125 Bore - Lefts & Rights (CP Bullets BCR1220-STD)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCR1220-STD |
|
Bore (in) |
4.125 |
|
Stroke (in) |
3.875 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.062 |
|
Head Type |
ASCS |
|
Head CC |
64 |
|
Dome / Dish Height |
0.275 |
|
Dom/Dish CC |
8 |
|
Compression Ratio |
13.7 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.2 x 1.2 x 3.0mm |
|
VR Depth |
-.335 / SP |
|
Cubic Inch |
414 |
|
Piston Weight |
443 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | BCR1220-STD Chevy 414ci ASCS 4.125 Bore - Lefts & Rights (CP Bullets BCR1220-STD) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chev |
| Make | GM |
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 bore clearance for the BCR1220-STD pistons?
For the BCR1220-STD pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined based on your specific engine build and intended use.
What compression ratio can I expect with the BCR1220-STD pistons in my 414ci Chevy engine?
The BCR1220-STD pistons provide a compression ratio of 13.7:1 when used with a 64cc head. Keep in mind that actual compression may vary based on head gasket thickness and other factors.
What type of valve reliefs do the BCR1220-STD pistons have?
The BCR1220-STD pistons feature two valve reliefs, which are designed to accommodate typical camshaft profiles in small block Chevy applications. Ensure your camshaft specifications are compatible.
What is the weight of the BCR1220-STD pistons and how does it affect performance?
Each BCR1220-STD piston weighs 443 grams. While lighter pistons can improve engine response and reduce reciprocating mass, it's essential to balance them with the rest of your rotating assembly for optimal performance.
Do the BCR1220-STD pistons require any special machining?
The BCR1220-STD pistons may require specific machining for optimal fitment, such as honing the cylinder bores to achieve the correct clearance. Always consult with your engine builder for precise machining requirements.
