Big Block Chevy -2.9cc Flat Top 4.320 bore 4.000 stroke 6.135 rod, 8.2 to 1 with 118cc head (CP Bullets BBC5020-070)
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBC5020-070 |
|
Bore (in) |
4.32 |
|
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 |
-2.94 |
|
Compression Ratio |
8.1 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1/16 x 1/16 x 3/16 in. |
|
VR Depth |
-0.29 |
|
Cubic Inch |
460 |
|
Piston Weight |
445 |
|
Style |
FT |
|
Valve Reliefs |
1 VR with Slant |
|
Gas Port |
No |
| Product Name | Big Block Chevy -2.9cc Flat Top 4.320 bore 4.000 stroke 6.135 rod, 8.2 to 1 with 118cc head (CP Bullets BBC5020-070) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Chev |
| Make | GM |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
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 BBC5020-070 pistons?
For the BBC5020-070 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, always verify with your engine builder as specific requirements may vary based on application and tolerances.
What compression ratio can I expect with the BBC5020-070 pistons and 118cc heads?
The BBC5020-070 pistons provide a compression ratio of approximately 8.1:1 when used with 118cc heads. This ratio is suitable for moderate performance applications, but tuning and fuel quality will significantly impact performance and reliability.
What type of valve reliefs do the BBC5020-070 pistons have?
The BBC5020-070 pistons feature a single valve relief with a slant design. This allows for adequate clearance with typical Big Block Chevy valve configurations, but always check your specific engine setup to ensure compatibility.
What is the weight of the BBC5020-070 pistons and how does it affect engine performance?
The BBC5020-070 pistons weigh 445 grams each. While lighter pistons can improve engine response and RPM potential, it's essential to balance them with the rest of the rotating assembly to maintain reliability and performance.
Are gas ports included in the design of the BBC5020-070 pistons?
No, the BBC5020-070 pistons do not feature gas ports. This design is typical for applications where simplicity and durability are preferred over maximum performance, making them suitable for street and moderate race engines.
