Small Block Chevy Flat Top -6.83cc All 23 Heads 4.030 Bore,3.750 stroke, 6.000 rod 10.5 to 1 comp with a 64cc head (CP Bullets BC1025-030)
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|
Make |
Chevrolet |
|
Engine Type |
Small Block |
|
Part Number |
BC1025-030 |
|
Bore (in) |
4.03 |
|
Stroke (in) |
3.75 |
|
Rod Length (in) |
6 |
|
Comp Height |
1.125 |
|
Head Type |
All 23 deg |
|
Head CC |
64 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-6.8 |
|
Compression Ratio |
10.5 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.310 / -.310 |
|
Cubic Inch |
383 |
|
Piston Weight |
392 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Chevy Flat Top -6.83cc All 23 Heads 4.030 Bore,3.750 stroke, 6.000 rod 10.5 to 1 comp with a 64cc head (CP Bullets BC1025-030) |
|---|---|
| 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 BC1025-030 pistons?
For the BC1025-030 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, always verify with your engine builder as specific clearances may vary based on your application and machining tolerances.
What is the compression ratio when using these pistons with a 64cc head?
The BC1025-030 pistons provide a compression ratio of 10.5:1 when paired with a 64cc cylinder head, assuming a standard 3.750" stroke and 4.030" bore. Ensure that your engine is tuned appropriately for this compression level.
What type of ring gaps should I set for the BC1025-030 pistons?
For the BC1025-030 pistons, set the ring gaps according to your specific application and intended use. A common starting point is 0.004" per inch of bore for the top rings and slightly more for the second rings, but always consult with your engine builder for precise specifications.
What is the weight of the BC1025-030 pistons, and how does it affect my engine build?
The BC1025-030 pistons weigh 392 grams each. This weight can influence engine balance and performance, particularly at higher RPMs. Ensure your rotating assembly is balanced accordingly to maintain reliability and performance.
Are these pistons compatible with both naturally aspirated and boosted applications?
Yes, the BC1025-030 pistons can be used in both naturally aspirated and boosted applications. However, ensure that your engine is properly tuned and that all components are rated for the intended power levels to maintain reliability.
