Big Block Chevy Tall Deck 24.9cc dome 4.560 Bore 4.500 stroke 6.700 rod, 12.5 to 1 with 118cc head (CP Bullets BBC5305-060)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBC5305-060 |
|
Bore (in) |
4.56 |
|
Stroke (in) |
4.5 |
|
Rod Length (in) |
6.7 |
|
Comp Height |
1.245 |
|
Head Type |
24 OC |
|
Head CC |
118 |
|
Dome / Dish Height |
0.25 |
|
Dom/Dish CC |
24.9 |
|
Compression Ratio |
12.3 |
|
Pin |
.990 x 2.930 |
|
Ring Thickness |
1/16 x 1/16 x 3/16 in. |
|
VR Depth |
-0.31 |
|
Cubic Inch |
588 |
|
Piston Weight |
642 |
|
Style |
Dome |
|
Valve Reliefs |
1 VR with Slant |
|
Gas Port |
No |
| Product Name | Big Block Chevy Tall Deck 24.9cc dome 4.560 Bore 4.500 stroke 6.700 rod, 12.5 to 1 with 118cc head (CP Bullets BBC5305-060) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Chev |
| Make | GM |
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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 BBC5305-060 pistons?
The BBC5305-060 pistons are designed to achieve a compression ratio of approximately 12.3:1 when used with 118cc cylinder heads. Ensure that your engine's configuration, including head gasket thickness and combustion chamber volume, is accounted for to maintain this ratio.
What bore and stroke specifications are compatible with the BBC5305-060 pistons?
These pistons are designed for a 4.560-inch bore and a 4.500-inch stroke, making them suitable for Big Block Chevy applications with these specific dimensions. Proper fitment is crucial, so verify your engine's specifications before installation.
What type of valve reliefs do the BBC5305-060 pistons feature?
The BBC5305-060 pistons come with one valve relief that has a slant design. This feature is intended to accommodate typical valve train setups in Big Block Chevy engines, but always check for clearance with your specific camshaft and valve configuration.
What is the weight of the BBC5305-060 pistons, and how does it affect engine performance?
The BBC5305-060 pistons weigh 642 grams each. While lighter pistons can improve engine response and reduce reciprocating mass, ensure that your engine's rotating assembly is balanced accordingly to maintain reliability and performance.
What is the recommended installation procedure for the BBC5305-060 pistons?
When installing the BBC5305-060 pistons, ensure that the piston-to-wall clearance is set according to your specific engine build. Additionally, ring gaps should be tailored to your application, and the piston pins should be properly secured to avoid any movement during operation.
