Big BLock Pontiac Flat Top -9.04cc All 14 deg heads 4.181 Bore. 4.250 stroke, 6.800 rod 11.3 to 1 comp with 72cc head (CP Bullets BP8002-061)
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|
Make |
Pontiac |
|
Engine Type |
Pontiac |
|
Part Number |
BP8002-061 |
|
Bore (in) |
4.181 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.8 |
|
Comp Height |
1.295 |
|
Head Type |
Edel /Stock Iron |
|
Head CC |
72 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-9.04 |
|
Compression Ratio |
11.6 |
|
Pin |
.990 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.280 / -.280 |
|
Cubic Inch |
467 |
|
Piston Weight |
486 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Big BLock Pontiac Flat Top -9.04cc All 14 deg heads 4.181 Bore. 4.250 stroke, 6.800 rod 11.3 to 1 comp with 72cc head (CP Bullets BP8002-061) |
|---|---|
| Brands | CP Carrillo |
| Engine | Pontiac |
| Make | Pontiac |
Delivery & Freight
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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 compression ratio for the BP8002-061 pistons?
The BP8002-061 pistons are designed to achieve a compression ratio of approximately 11.6:1 when used with 72cc cylinder heads. However, actual compression may vary based on head gasket thickness and combustion chamber modifications.
What bore and stroke specifications are compatible with the BP8002-061 pistons?
These pistons are designed for a bore of 4.181 inches and a stroke of 4.250 inches, making them suitable for a 467 cubic inch Pontiac engine.
What type of valve reliefs do the BP8002-061 pistons feature?
The BP8002-061 pistons come with two valve reliefs, which are essential for clearance with the valves in high-performance applications.
What is the weight of the BP8002-061 pistons, and how does it affect performance?
Each BP8002-061 piston weighs 486 grams. Lighter pistons can improve engine response and reduce reciprocating mass, but ensure that your engine's rotating assembly is balanced accordingly.
What is the pin size and length for the BP8002-061 pistons?
The BP8002-061 pistons use a pin size of .990 inches and a length of 2.500 inches. Ensure your connecting rods are compatible with these specifications for proper fitment.
