Small Block Ford 410/420 STD All 19° Bore 4.040 CH 1.240 Stroke 4.000 Rod 6.250 CR 11.7 Flat Top Head 62cc (CP Bullets BF6067-040)
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|
Make |
Ford |
|
Engine Type |
Small Block |
|
Part Number |
BF6067-040 |
|
Bore (in) |
4.04 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.25 |
|
Comp Height |
1.24 |
|
Head Type |
Most 19 / 20 deg |
|
Head CC |
62 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-6.1 |
|
Compression Ratio |
11.7 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.280 / SP |
|
Cubic Inch |
410 |
|
Piston Weight |
479 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Small Block Ford 410/420 STD All 19° Bore 4.040 CH 1.240 Stroke 4.000 Rod 6.250 CR 11.7 Flat Top Head 62cc (CP Bullets BF6067-040) |
|---|---|
| Brands | CP Carrillo |
| Engine | Ford V8 |
| 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 BF6067-040 pistons?
For the BF6067-040 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 specific application and tolerances.
What compression ratio can I expect with the BF6067-040 pistons in a Small Block Ford?
The BF6067-040 pistons provide a compression ratio of 11.7:1 when used with 62cc heads. Ensure that your engine is set up correctly to handle this compression for optimal performance and reliability.
What type of ring gaps should I set for the BF6067-040 pistons?
Ring gaps for the BF6067-040 pistons should be set according to the intended use of the engine. A common starting point is 0.020" for the top rings and 0.022" for the second rings, but adjustments may be necessary based on boost levels and RPM.
What is the weight of the BF6067-040 pistons, and how does it affect engine performance?
The BF6067-040 pistons weigh 479 grams. Lighter pistons can improve engine response and reduce load on the connecting rods, but ensure that your rotating assembly is balanced to avoid vibrations.
Are there any specific machining requirements for the BF6067-040 pistons?
Yes, the BF6067-040 pistons may require specific machining for proper fitment, including checking bore size and ensuring correct ring groove depth. Always consult with your engine builder for precise machining needs.
