Olds 455 Dish -12cc All 6 deg Olds 4.185 bore, 4.250 stroke, 6.735 rod (CP Bullets BO7020-060)
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
|
Make |
Oldsmobile |
|
Engine Type |
Oldsmobile |
|
Part Number |
BO7020-060 |
|
Bore (in) |
4.185 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.735 |
|
Comp Height |
1.74 |
|
Head Type |
Stock / Edel |
|
Head CC |
80 |
|
Dome / Dish Height |
-0.076 |
|
Dom/Dish CC |
-12 |
|
Compression Ratio |
10.5 |
|
Pin |
.984 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
N/A |
|
Cubic Inch |
468 |
|
Piston Weight |
562 |
|
Style |
Dish |
|
Valve Reliefs |
None |
|
Gas Port |
No |
| Product Name | Olds 455 Dish -12cc All 6 deg Olds 4.185 bore, 4.250 stroke, 6.735 rod (CP Bullets BO7020-060) |
|---|---|
| Brands | CP Carrillo |
| Engine | Olds |
| Make | Olds |
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 BO7020-060 pistons?
For the BO7020-060 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined based on your specific engine build and intended use.
What compression ratio can I expect with the BO7020-060 pistons?
The BO7020-060 pistons are designed to achieve a compression ratio of approximately 10.5:1 when used with 80cc heads. Ensure that your engine's overall setup is compatible to achieve this ratio reliably.
What type of ring set is compatible with the BO7020-060 pistons?
The BO7020-060 pistons use a ring thickness of 1.5 x 1.5 x 3.0mm. Ensure that the ring set you choose is compatible with these dimensions for optimal performance.
Do I need to machine the pistons for my specific application?
Yes, it's common to require some machining for proper fitment. Ensure the pistons are fitted with the correct bore clearance and that the ring gaps are set according to your engine's specifications.
What is the weight of the BO7020-060 pistons and how does it affect performance?
The BO7020-060 pistons weigh 562 grams each. While heavier pistons can provide durability, they may also affect engine response and revving characteristics. Consider your application when selecting piston weight.
