Big Block Chevy -3.4cc Flat Top 4.560 Bore 4.000 stroke 6.385 rod, 8.8 to 1 with 118cc head (CP Bullets BBC5220-060)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBC5220-060 |
|
Bore (in) |
4.56 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.135 |
|
Comp Height |
1.645 |
|
Head Type |
24 OC |
|
Head CC |
118 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-3.4 |
|
Compression Ratio |
8.5 |
|
Pin |
.990 x 2.930 |
|
Ring Thickness |
1/16 x 1/16 x 3/16 in. |
|
VR Depth |
-0.31 |
|
Cubic Inch |
523 |
|
Piston Weight |
725 |
|
Style |
FT |
|
Valve Reliefs |
1 VR with Slant |
|
Gas Port |
No |
| Product Name | Big Block Chevy -3.4cc Flat Top 4.560 Bore 4.000 stroke 6.385 rod, 8.8 to 1 with 118cc head (CP Bullets BBC5220-060) |
|---|---|
| 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 bore clearance for the BBC5220-060 pistons?
For the BBC5220-060 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, always verify with your specific engine build and conditions, as clearances can vary based on factors like material expansion and intended use.
What compression ratio can I expect with the BBC5220-060 pistons and 118cc heads?
The BBC5220-060 pistons provide a compression ratio of approximately 8.5:1 when paired with 118cc heads. Keep in mind that actual compression may vary based on factors such as head gasket thickness and deck height.
What is the weight of the BBC5220-060 pistons and how does it affect performance?
The BBC5220-060 pistons weigh 725 grams each. Heavier pistons can affect engine response and rev characteristics, so consider this weight in relation to your engine's intended use and performance goals.
What type of valve reliefs do the BBC5220-060 pistons have?
The BBC5220-060 pistons feature one valve relief with a slant design. This is intended to accommodate typical Big Block Chevy valve configurations, but ensure your specific setup is compatible to avoid interference.
Are gas ports included in the design of the BBC5220-060 pistons?
No, the BBC5220-060 pistons do not include gas ports. This design is suitable for applications where gas porting is not required, but if you are considering high-performance applications, consult with your engine builder for specific needs.
