Chevy 407ci ASCS 4.155 Bore 1.125 CH 8cc Dome Vert Gas Ports - Lefts & Rights (CP Bullets BCRE1221-030)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BCRE1221-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
3.75 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.125 |
|
Head Type |
ASCS |
|
Head CC |
64 |
|
Dome / Dish Height |
0.275 |
|
Dom/Dish CC |
8 |
|
Compression Ratio |
13.8 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.0 x 1.0 x 2.0mm |
|
VR Depth |
-.335 / SP |
|
Cubic Inch |
407 |
|
Piston Weight |
462 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy 407ci ASCS 4.155 Bore 1.125 CH 8cc Dome Vert Gas Ports - Lefts & Rights (CP Bullets BCRE1221-030) |
|---|---|
| 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 BCRE1221-030 pistons?
For the BCRE1221-030 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this can vary based on the specific engine build and intended use, so always consult with your engine builder for precise specifications.
What compression ratio can I expect with the BCRE1221-030 pistons?
The BCRE1221-030 pistons provide a compression ratio of approximately 13.8:1 when used with a 64cc head. Ensure that your engine is properly tuned to handle this compression level, as it may require high-octane fuel and careful tuning.
What type of ring set is compatible with the BCRE1221-030 pistons?
The BCRE1221-030 pistons are designed to work with a 1.0 x 1.0 x 2.0mm ring set. Make sure to check the ring gap specifications based on your engine's application and intended RPM range.
What is the piston weight of the BCRE1221-030 and how does it affect performance?
The BCRE1221-030 pistons weigh 462 grams. While lighter pistons can improve throttle response and reduce reciprocating mass, it's essential to balance them with the rest of the rotating assembly to maintain engine reliability and performance.
Are the BCRE1221-030 pistons suitable for high-performance applications?
Yes, the BCRE1221-030 pistons are designed for high-performance applications, particularly in a 407ci Chevrolet small block. Ensure that your engine is built with appropriate tolerances and components to support the power levels you aim to achieve.
