Big Block Ford Flat Top -6cc Cobra Jet/ Edel 4.390 bore, 4.140 stroke, 6.800 rod 11.8 to 1 with 75cc head (CP Bullets BBF6200-030)
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|
Make |
Ford |
|
Engine Type |
Big Block |
|
Part Number |
BBF6200-030 |
|
Bore (in) |
4.39 |
|
Stroke (in) |
4.14 |
|
Rod Length (in) |
6.8 |
|
Comp Height |
1.415 |
|
Head Type |
Cobra Jet |
|
Head CC |
75 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-6 |
|
Compression Ratio |
11.9 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1/16 x 1/16 x 3/16 in. |
|
VR Depth |
-.300 / -.075 |
|
Cubic Inch |
501 |
|
Piston Weight |
561 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Big Block Ford Flat Top -6cc Cobra Jet/ Edel 4.390 bore, 4.140 stroke, 6.800 rod 11.8 to 1 with 75cc head (CP Bullets BBF6200-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Ford |
| Make | Ford |
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 clearance for the BBF6200-030 pistons?
For the BBF6200-030 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, this may vary based on the specific application and operating conditions, so it's best to consult with your engine builder for precise specifications.
What compression ratio can I expect with the BBF6200-030 pistons and 75cc heads?
The BBF6200-030 pistons provide a compression ratio of approximately 11.9:1 when used with 75cc Cobra Jet heads. Keep in mind that actual compression can vary based on factors such as head gasket thickness and combustion chamber modifications.
What type of ring package is compatible with the BBF6200-030 pistons?
The BBF6200-030 pistons are designed to work with a 1/16 x 1/16 x 3/16 inch ring package. Ensure that the rings are properly gapped according to your engine's specifications for optimal performance.
What is the piston weight of the BBF6200-030 and how does it affect performance?
The BBF6200-030 pistons weigh 561 grams. While lighter pistons can improve throttle response and reduce reciprocating mass, it's important to balance them with the rest of the rotating assembly to maintain engine reliability and performance.
Do the BBF6200-030 pistons require any specific machining before installation?
Yes, the BBF6200-030 pistons may require specific machining such as honing of the cylinder bores to achieve the correct clearance. Always check with your engine builder to ensure proper fitment and clearances before installation.
