Small Block Ford Dish -20cc All 20 deg. TFS Twisted 4.125 bore, 3.400 stroke, 5.400 rod 60cc head 8.7 to 1 comp (CP Bullets BF6121-STD)
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|
Make |
Ford |
|
Engine Type |
Small Block |
|
Part Number |
BF6121-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 |
-0.126 |
|
Dom/Dish CC |
-20 |
|
Compression Ratio |
8.7 |
|
Pin |
.927 x 2.500 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.280 / SP |
|
Cubic Inch |
347 |
|
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 4.125 bore, 3.400 stroke, 5.400 rod 60cc head 8.7 to 1 comp (CP Bullets BF6121-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 compression ratio for the BF6121-STD pistons?
The BF6121-STD pistons are designed to achieve a compression ratio of 8.7:1 when used with a 60cc head and a 4.125-inch bore.
What is the pin size for the BF6121-STD pistons?
The BF6121-STD pistons feature a pin size of .927 inches with a length of 2.500 inches.
What is the weight of the BF6121-STD pistons?
Each BF6121-STD piston weighs approximately 483 grams, which is important for maintaining balance in the rotating assembly.
Do the BF6121-STD pistons have valve reliefs?
Yes, the BF6121-STD pistons come with three valve reliefs to accommodate the valve train of a Small Block Ford engine.
What type of ring thickness is used with the BF6121-STD pistons?
The BF6121-STD pistons are designed to use rings with a thickness of 1.5mm for the top and second rings, and 3.0mm for the oil ring.
