Big Block Chevy 24.35cc Dome 4.280 Bore 4.000 stroke 6.385 rod, 9.5 to 1 with 118cc head (CP Bullets BBC5112-030)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBC5112-030 |
|
Bore (in) |
4.28 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.385 |
|
Comp Height |
1.4 |
|
Head Type |
24 OC |
|
Head CC |
118 |
|
Dome / Dish Height |
0.25 |
|
Dom/Dish CC |
24.3 |
|
Compression Ratio |
9.8 |
|
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 |
606 |
|
Style |
Dome |
|
Valve Reliefs |
1 VR with Slant |
|
Gas Port |
No |
| Product Name | Big Block Chevy 24.35cc Dome 4.280 Bore 4.000 stroke 6.385 rod, 9.5 to 1 with 118cc head (CP Bullets BBC5112-030) |
|---|---|
| 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 is the recommended compression ratio for the BBC5112-030 pistons with a 118cc head?
The BBC5112-030 pistons are designed to achieve a compression ratio of approximately 9.8:1 when paired with a 118cc cylinder head. However, actual compression may vary based on factors such as head gasket thickness and combustion chamber modifications.
What bore and stroke specifications do the BBC5112-030 pistons accommodate?
The BBC5112-030 pistons are designed for a bore of 4.280 inches and a stroke of 4.000 inches, making them suitable for a Big Block Chevy engine with these specifications.
What type of valve reliefs do the BBC5112-030 pistons feature?
The BBC5112-030 pistons come with one valve relief that has a slant design, which helps accommodate the valve train geometry in typical Big Block Chevy applications.
What is the weight of the BBC5112-030 pistons, and how does it affect engine performance?
The BBC5112-030 pistons weigh 606 grams each. While lighter pistons can improve engine response and reduce reciprocating mass, it's essential to balance them with the rest of the rotating assembly for optimal performance.
Are there any specific machining requirements for the BBC5112-030 pistons?
When installing the BBC5112-030 pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, check that the ring gaps are properly set, as these factors are crucial for engine performance and longevity.
