Big Block Chevy 20.00cc Dome 4.280 Bore 4.000 stroke 6.135 rod, 9.0 to 1 with 100cc Closed Chamber head (CP Bullets BBC5113-030)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBC5113-030 |
|
Bore (in) |
4.28 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.135 |
|
Comp Height |
1.645 |
|
Head Type |
26 C.C. |
|
Head CC |
114 |
|
Dome / Dish Height |
0.25 |
|
Dom/Dish CC |
20 |
|
Compression Ratio |
9 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1/16 x 1/16 x 3/16 in. |
|
VR Depth |
-0.295 |
|
Cubic Inch |
460 |
|
Piston Weight |
691 |
|
Style |
Dome |
|
Valve Reliefs |
1 VR with Slant |
|
Gas Port |
No |
| Product Name | Big Block Chevy 20.00cc Dome 4.280 Bore 4.000 stroke 6.135 rod, 9.0 to 1 with 100cc Closed Chamber head (CP Bullets BBC5113-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block 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 compression ratio for the BBC5113-030 pistons?
The BBC5113-030 pistons are designed to achieve a compression ratio of 9.0 to 1 when used with a 100cc closed chamber head. Ensure that your engine's setup aligns with this specification for optimal performance.
What are the specific machining requirements for installing the BBC5113-030 pistons?
When installing the BBC5113-030 pistons, you should ensure the bore clearance is set correctly according to your engine's specifications. Additionally, check that the ring gaps are appropriately set by the engine builder to accommodate the intended use and operating conditions.
What is the weight of the BBC5113-030 pistons, and how does it affect engine performance?
The BBC5113-030 pistons weigh 691 grams each. This weight can influence engine balance and performance, particularly in high RPM applications. It's essential to consider the total rotating assembly weight and balance during the build process.
Are there any specific considerations for valve reliefs with the BBC5113-030 pistons?
The BBC5113-030 pistons feature one valve relief with a slant. Ensure that your cylinder heads and camshaft profile are compatible to avoid any interference issues during operation.
What type of ring thickness is used with the BBC5113-030 pistons?
The BBC5113-030 pistons utilise a ring thickness of 1/16 x 1/16 x 3/16 inches. Make sure to select compatible rings and set the gaps according to your engine's specific requirements for optimal performance.
