Chevy 419ci 4.155 Bore 1.062 CH 14.6:1 CR - Lefts & Rights (CP Bullets BCRE1521-030)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRE1521-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
3.875 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.062 |
|
Head Type |
23 * Most Heads |
|
Head CC |
64 |
|
Dome / Dish Height |
0.48 |
|
Dom/Dish CC |
11.2 |
|
Compression Ratio |
14.6 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
.043 x .043 x 3.0 |
|
VR Depth |
-.310 / SP |
|
Cubic Inch |
420 |
|
Piston Weight |
502 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Chevy 419ci 4.155 Bore 1.062 CH 14.6:1 CR - Lefts & Rights (CP Bullets BCRE1521-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chev |
| 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 BCRE1521-030 pistons?
For the BCRE1521-030 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this can vary based on the specific application and operating conditions, so always consult with your engine builder for precise specifications.
What type of fuel is suitable for the 14.6:1 compression ratio of these pistons?
Given the high compression ratio of 14.6:1, these pistons are designed for use with high-octane fuel, typically 98 RON or higher. Ensure your engine is tuned correctly to avoid detonation, which can lead to engine damage.
What is the significance of the gas ports on the BCRE1521-030 pistons?
The gas ports on the BCRE1521-030 pistons improve ring sealing by allowing combustion gases to pressurise the ring grooves. This helps reduce blow-by and enhances overall performance, especially in high-performance applications.
What machining considerations should I keep in mind when using these pistons?
When using the BCRE1521-030 pistons, ensure that the cylinder bore is honed to the correct size and finish to accommodate the pistons. Additionally, verify that the ring gaps are set according to your specific application and operating conditions.
Are there specific head types that work best with these pistons?
The BCRE1521-030 pistons are designed to work with most 23-degree Chevrolet heads. However, it's important to check for proper clearance with the valve reliefs and ensure compatibility with your specific head design.
