Big Block Ford FE Dish -18cc 390 GT Iron, 428CJ/ Edel 4.080 bore, 3.980 stroke, 6.490 rod 9.5 to 1 with 69cc head (CP Bullets BFE6025-030)
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|
Make |
Ford |
|
Engine Type |
Big Block FE |
|
Part Number |
BFE6025-030 |
|
Bore (in) |
4.08 |
|
Stroke (in) |
3.98 |
|
Rod Length (in) |
6.49 |
|
Comp Height |
1.66 |
|
Head Type |
Fit all FE |
|
Head CC |
69 |
|
Dome / Dish Height |
-0.121 |
|
Dom/Dish CC |
-18 |
|
Compression Ratio |
9.5 |
|
Pin |
.975 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.240 / -.240 |
|
Cubic Inch |
416 |
|
Piston Weight |
464 |
|
Style |
Dish |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Big Block Ford FE Dish -18cc 390 GT Iron, 428CJ/ Edel 4.080 bore, 3.980 stroke, 6.490 rod 9.5 to 1 with 69cc head (CP Bullets BFE6025-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Ford |
| Make | Ford |
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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 BFE6025-030 pistons?
For the BFE6025-030 pistons, a typical bore clearance of 0.0035" to 0.0045" is recommended. However, always verify with your specific engine build and consider factors such as operating temperature and intended use.
What compression ratio can I expect with the BFE6025-030 pistons and a 69cc head?
These pistons are designed to achieve a compression ratio of approximately 9.5:1 when used with a 69cc head. Keep in mind that actual compression may vary based on factors such as head gasket thickness and machining tolerances.
Do I need to modify my engine for the BFE6025-030 pistons to fit?
The BFE6025-030 pistons are designed to fit Big Block Ford FE engines, but you may need to perform some machining, such as honing the bores and ensuring proper clearance with the connecting rods and crankshaft. Always check for valve clearance as well.
What is the weight of the BFE6025-030 pistons and how does it affect performance?
The BFE6025-030 pistons weigh 464 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, but ensure your connecting rods and crankshaft are rated for the intended RPM and power levels.
What type of ring set is compatible with the BFE6025-030 pistons?
The BFE6025-030 pistons use a ring thickness of 1.5 x 1.5 x 3.0mm. Ensure that the ring set you choose is compatible with the piston design and that ring gaps are set according to your engine's specifications.
