Big Block Chevy 16.00cc Dome 4.155 Bore 4.000 stroke 6.385 rod, 10 to 1 with 100cc head & 9.0 to 1 with 118cc head (CP Bullets BBC5109-030)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBC5109-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.385 |
|
Comp Height |
1.395 |
|
Head Type |
26 C.C. |
|
Head CC |
100 |
|
Dome / Dish Height |
0.175 |
|
Dom/Dish CC |
16.46 |
|
Compression Ratio |
10 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-0.25 |
|
Cubic Inch |
434 |
|
Piston Weight |
583 |
|
Style |
Dome |
|
Valve Reliefs |
1 VR with Slant |
|
Gas Port |
No |
| Product Name | Big Block Chevy 16.00cc Dome 4.155 Bore 4.000 stroke 6.385 rod, 10 to 1 with 100cc head & 9.0 to 1 with 118cc head (CP Bullets BBC5109-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block 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 compression ratio can I expect with the BBC5109-030 pistons?
The BBC5109-030 pistons provide a compression ratio of 10:1 when used with a 100cc cylinder head and 9:1 with a 118cc head. Ensure that your engine is built to accommodate these ratios for optimal performance.
What are the recommended bore and stroke specifications for these pistons?
These pistons are designed for a bore of 4.155 inches and a stroke of 4.000 inches. It's crucial to maintain these specifications during engine assembly to achieve the intended performance characteristics.
What is the weight of the BBC5109-030 pistons, and how does it affect performance?
The BBC5109-030 pistons weigh 583 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, but ensure that your engine's components are compatible with this weight for reliability.
What type of valve reliefs do these pistons have?
The BBC5109-030 pistons feature one valve relief with a slant design. This is important for ensuring proper clearance with the valves during operation, particularly at high RPM.
What is the dome height of the BBC5109-030 pistons, and why is it significant?
The dome height of the BBC5109-030 pistons is 0.175 inches. This dimension is critical for achieving the desired compression ratio and should be considered when calculating overall engine geometry.
