Small Block Ford Flat Top -8.7cc All 20 deg. TFS Twisted 4.125 bore, 3.250 stroke, 5.400 rod 60cc head 9.8 to 1 comp (CP Bullets BF6120-STD)
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|
Make |
Ford |
|
Engine Type |
Small Block |
|
Part Number |
BF6120-STD |
|
Bore (in) |
4.125 |
|
Stroke (in) |
3.25 |
|
Rod Length (in) |
5.4 |
|
Comp Height |
1.165 |
|
Head Type |
STD/ TFS Twisted |
|
Head CC |
60 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-8.7 |
|
Compression Ratio |
9.8 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.280 / SP |
|
Cubic Inch |
347 |
|
Piston Weight |
474 |
|
Style |
FT |
|
Valve Reliefs |
3 VR's |
|
Gas Port |
No |
| Product Name | Small Block Ford Flat Top -8.7cc All 20 deg. TFS Twisted 4.125 bore, 3.250 stroke, 5.400 rod 60cc head 9.8 to 1 comp (CP Bullets BF6120-STD) |
|---|---|
| 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 and stroke for the BF6120-STD pistons?
The BF6120-STD pistons are designed for a 4.125-inch bore and a 3.250-inch stroke, making them suitable for a Small Block Ford engine configuration.
What compression ratio can I expect with the BF6120-STD pistons?
These pistons provide a compression ratio of 9.8:1 when used with a 60cc TFS Twisted head, which is ideal for performance applications while maintaining reliability.
What are the specific ring thicknesses for the BF6120-STD pistons?
The BF6120-STD pistons come with a ring thickness of 1.5mm for both the top and second rings, and a 3.0mm oil ring, which is standard for performance applications.
What is the weight of the BF6120-STD pistons, and how does it affect performance?
Each BF6120-STD piston weighs 474 grams. This weight is considered optimal for a balance between performance and durability in high-revving applications.
Do the BF6120-STD pistons require specific machining or clearances?
Yes, proper machining is essential. Ensure correct bore clearance and ring gaps are set by the engine builder, as these factors significantly affect performance and reliability.
