Big BLock Pontiac Flat Top -7.14cc All 14 deg heads 4.181 Bore. 3.750 stroke, 6.700 rod 10.3 to 1 comp with 69cc head (CP Bullets BP8001-061)
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|
Make |
Pontiac |
|
Engine Type |
Pontiac |
|
Part Number |
BP8001-061 |
|
Bore (in) |
4.181 |
|
Stroke (in) |
3.75 |
|
Rod Length (in) |
6.7 |
|
Comp Height |
1.63 |
|
Head Type |
Ram Air III/ Edel |
|
Head CC |
69 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-7.14 |
|
Compression Ratio |
10.3 |
|
Pin |
.990 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.250 / -.250 |
|
Cubic Inch |
412 |
|
Piston Weight |
532 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Big BLock Pontiac Flat Top -7.14cc All 14 deg heads 4.181 Bore. 3.750 stroke, 6.700 rod 10.3 to 1 comp with 69cc head (CP Bullets BP8001-061) |
|---|---|
| Brands | CP Carrillo |
| Engine | Pontiac |
| Make | Pontiac |
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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 BP8001-061 pistons?
For the BP8001-061 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined by the engine builder based on the specific application and operating conditions.
What compression ratio can I expect with the BP8001-061 pistons and 69cc heads?
The BP8001-061 pistons are designed to achieve a compression ratio of 10.3:1 when used with 69cc heads. Ensure that your engine is properly tuned and that fuel quality is suitable for this compression level.
What is the weight of the BP8001-061 pistons and how does it affect performance?
The BP8001-061 pistons weigh 532 grams each. Lighter pistons can improve engine response and reduce stress on the connecting rods, but ensure that the entire rotating assembly is balanced for optimal performance.
Are there specific machining requirements for the BP8001-061 pistons?
Yes, the BP8001-061 pistons may require specific machining such as honing of the cylinder bores to achieve the correct clearance. It's crucial to follow the manufacturer's guidelines and consult with your engine builder for precise fitment.
What type of rings are included with the BP8001-061 pistons?
The BP8001-061 pistons come with a ring thickness of 1.5 x 1.5 x 3.0mm. Ensure that the ring gaps are set according to your engine's specifications for optimal performance and longevity.
