Small Block Ford Dish -20cc All 20 deg. TFS Twisted 4.155 bore, 3.400 stroke, 5.400 rod 60cc head 8.9 to 1 comp (CP Bullets BF6121-030)
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|
Make |
Ford |
|
Engine Type |
Small Block |
|
Part Number |
BF6121-030 |
|
Bore (in) |
4.155 |
|
Stroke (in) |
3.25 |
|
Rod Length (in) |
5.4 |
|
Comp Height |
1.165 |
|
Head Type |
STD/ TFS Twisted |
|
Head CC |
60 |
|
Dome / Dish Height |
-0.126 |
|
Dom/Dish CC |
-20 |
|
Compression Ratio |
8.9 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.280 / SP |
|
Cubic Inch |
353 |
|
Piston Weight |
483 |
|
Style |
Dish |
|
Valve Reliefs |
3 VR's |
|
Gas Port |
No |
| Product Name | Small Block Ford Dish -20cc All 20 deg. TFS Twisted 4.155 bore, 3.400 stroke, 5.400 rod 60cc head 8.9 to 1 comp (CP Bullets BF6121-030) |
|---|---|
| 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 compression ratio for the BF6121-030 pistons?
The BF6121-030 pistons are designed to achieve a compression ratio of 8.9:1 when used with a 60cc TFS Twisted head. Ensure that your engine's specifications align with this setup for optimal performance.
What bore and stroke specifications are compatible with the BF6121-030 pistons?
These pistons are compatible with a bore size of 4.155 inches and a stroke of 3.400 inches. It's crucial to verify that your engine block can accommodate these dimensions for proper fitment.
What is the weight of the BF6121-030 pistons, and how does it affect engine performance?
The BF6121-030 pistons weigh 483 grams each. This weight can influence engine balance and performance, particularly at high RPMs. Ensure your rotating assembly is balanced accordingly to maintain reliability.
What type of valve reliefs do the BF6121-030 pistons have?
The BF6121-030 pistons feature three valve reliefs. This design helps accommodate larger camshaft profiles while preventing piston-to-valve contact, which is essential for high-performance applications.
Are there any specific machining requirements for the BF6121-030 pistons?
Yes, it's important to check the bore clearance and set the ring gaps according to your engine's specifications. Proper machining will ensure optimal performance and longevity of the pistons in your engine.
