Small Block Ford 347ci STD All 19° 4.030 (CP Bullets BF6012-030)
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|
Make |
Ford |
|
Engine Type |
Small Block |
|
Part Number |
BF6012-030 |
|
Bore (in) |
4.03 |
|
Stroke (in) |
3.4 |
|
Rod Length (in) |
5.4 |
|
Comp Height |
1.09 |
|
Head Type |
STD/ TFS Twisted |
|
Head CC |
60 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
.-6.056 |
|
Compression Ratio |
10 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.280 / SP |
|
Cubic Inch |
352 |
|
Piston Weight |
423 |
|
Style |
Dish |
|
Valve Reliefs |
3 VR's |
|
Gas Port |
No |
| Product Name | Small Block Ford 347ci STD All 19° 4.030 (CP Bullets BF6012-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | Ford V8 |
| 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 BF6012-030 pistons?
For the BF6012-030 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, always consult with your engine builder for specific requirements based on your application and tolerances.
What compression ratio can I expect with the BF6012-030 pistons in my Small Block Ford?
The BF6012-030 pistons are designed to achieve a compression ratio of 10:1 when used with a 60cc combustion chamber. Ensure that your cylinder head and gasket choices align with this to maintain the desired compression.
What type of ring gaps should I set for the rings on the BF6012-030 pistons?
For the BF6012-030 pistons, a common starting point for ring gaps is 0.004" per inch of bore diameter. For a 4.030" bore, this would typically be around 0.016" for the top and second rings, but adjust according to your specific application and usage.
What is the weight of the BF6012-030 pistons, and how does it affect my engine build?
The BF6012-030 pistons weigh 423 grams each. This weight can influence your engine's balance and overall performance, particularly in high RPM applications. Ensure that your rotating assembly is balanced accordingly to maintain reliability.
Do the BF6012-030 pistons require any special machining before installation?
Yes, the BF6012-030 pistons may require specific machining, such as honing of the cylinder bores to achieve the correct clearance. Always verify with your engine builder for any additional machining needs based on your setup.
