Big BLock Pontiac Flat Top -7.14cc All 14 deg heads 4.155 Bore. 3.750 stroke, 6.700 rod 10.1 to 1 comp with 69cc head (CP Bullets BP8001-035)
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|
Make |
Pontiac |
|
Engine Type |
Pontiac |
|
Part Number |
BP8001-035 |
|
Bore (in) |
4.155 |
|
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 |
10.1 |
|
Pin |
.990 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.250 / -.250 |
|
Cubic Inch |
407 |
|
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 4.155 Bore. 3.750 stroke, 6.700 rod 10.1 to 1 comp with 69cc head (CP Bullets BP8001-035) |
|---|---|
| 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 bore and stroke for the BP8001-035 pistons?
The BP8001-035 pistons are designed for a bore of 4.155 inches and a stroke of 3.750 inches, making them suitable for a 407 cubic inch Pontiac engine.
What compression ratio can I expect with the BP8001-035 pistons and 69cc heads?
When using the BP8001-035 pistons with 69cc heads, you can achieve a compression ratio of approximately 10.1:1, assuming proper machining and clearance.
What type of valve reliefs do the BP8001-035 pistons have?
The BP8001-035 pistons feature two valve reliefs, which help accommodate larger camshaft profiles while preventing valve-piston contact.
What is the weight of the BP8001-035 pistons?
Each BP8001-035 piston weighs 532 grams, which is important to consider for balancing the rotating assembly.
What is the pin size for the BP8001-035 pistons?
The BP8001-035 pistons use a pin size of .990 inches with a length of 2.500 inches, which is standard for many Pontiac applications.
