Olds 495 Stock Edelbrock Bore 4.185 CH 1.250 Stroke 4.500 Rod 7.100 Dish Head (CP Bullets BO7030-060A)
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|
Make |
Oldsmobile |
|
Engine Type |
Oldsmobile |
|
Part Number |
BO7030-060A |
|
Bore (in) |
4.185 |
|
Stroke (in) |
4.5 |
|
Rod Length (in) |
7.1 |
|
Comp Height |
1.25 |
|
Head Type |
Stock / Edel |
|
Head CC |
80 |
|
Dome / Dish Height |
-0.114 |
|
Dom/Dish CC |
-18.07 |
|
Compression Ratio |
10.5 |
|
Pin |
.990 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.100 / -.100 |
|
Cubic Inch |
495 |
|
Piston Weight |
485 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Olds 495 Stock Edelbrock Bore 4.185 CH 1.250 Stroke 4.500 Rod 7.100 Dish Head (CP Bullets BO7030-060A) |
|---|---|
| Brands | CP Carrillo |
| Engine | Olds |
| Make | Olds |
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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 BO7030-060A pistons?
For the BO7030-060A pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, always verify with your engine builder as specific clearances may vary based on application and tolerances.
What is the compression ratio of the Olds 495 with these pistons?
The BO7030-060A pistons provide a compression ratio of 10.5:1 when used with stock Edelbrock heads with an 80cc chamber. Ensure that your engine's overall setup supports this compression for optimal performance.
What type of ring gaps should I set for these pistons?
For the BO7030-060A pistons, the recommended ring gaps are typically 0.020" for the top rings and 0.022" for the second rings. However, adjustments may be necessary based on your specific engine build and intended use.
What is the weight of the BO7030-060A pistons, and how does it affect performance?
The BO7030-060A pistons weigh 485 grams each. While this weight is suitable for performance applications, consider the impact on your engine's balance and rotating assembly. Lighter pistons can improve throttle response and reduce stress on the engine.
Are there any specific machining requirements for the BO7030-060A pistons?
Yes, the BO7030-060A pistons may require specific machining such as honing the cylinder bores to achieve the correct clearance. Additionally, ensure that the piston pin bores are properly sized and aligned for optimal performance.
