BH571-925-020 Gen3 Dodge Hemi 3.937" bore, 3.583" stroke, 6.242" rod, .927" pin. '03-'08 5.7L head, +4.7cc, 9.25:1 comp. (CP Bullets BH571-925-020)
BH573-950-020 Gen3 Dodge Hemi 3.937" bore, 4.050" stroke, 6.125" rod, .927" pin. '03-'08 5.7L head, -7.3cc, 9.50:1 comp (CP Bullets BH573-950-020)
BH572-950-020 Gen3 Dodge Hemi 3.937" bore, 3.795" stroke, 6.200" rod, .927" pin. '03-'08 5.7L head, -1.23cc, 9.50:1 comp (CP Bullets BH572-950-020)
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|
Make |
Dodge |
|
Engine Type |
Hemi |
|
Part Number |
BH572-950-020 |
|
Bore (in) |
3.937 |
|
Stroke (in) |
3.795 |
|
Rod Length (in) |
6.2 |
|
Comp Height |
1.168 |
|
Head Type |
5.7 Hemi |
|
Head CC |
85 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-1.23 |
|
Compression Ratio |
9.5 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.160 / -.060 |
|
Cubic Inch |
370 |
|
Piston Weight |
446 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | BH572-950-020 Gen3 Dodge Hemi 3.937" bore, 3.795" stroke, 6.200" rod, .927" pin. '03-'08 5.7L head, -1.23cc, 9.50:1 comp (CP Bullets BH572-950-020) |
|---|---|
| Brands | CP Carrillo |
| Engine | Hemi V8 |
| Make | Dodge |
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 BH572-950-020 pistons?
The BH572-950-020 pistons are designed to achieve a compression ratio of 9.5:1 when used with a 5.7L Hemi engine with 85cc heads. Ensure that your engine's setup, including head gasket thickness and combustion chamber volume, aligns with this specification for optimal performance.
What are the specific machining requirements for the BH572-950-020 pistons?
When installing the BH572-950-020 pistons, it's crucial to ensure the correct bore clearance is achieved. Additionally, verify that the ring gaps are set according to your engine's intended use, as this will affect performance and reliability. Always consult with your engine builder for precise machining needs.
What is the weight of the BH572-950-020 pistons, and how does it affect engine performance?
The BH572-950-020 pistons weigh 446 grams. While lighter pistons can improve engine response and reduce reciprocating mass, it's essential to balance them with the rest of the rotating assembly to maintain reliability and performance across your engine's operating range.
Are there any specific installation considerations for the BH572-950-020 pistons?
When installing the BH572-950-020 pistons, ensure that the piston pin fitment is correct at .927 inches and that the pistons are oriented properly with the valve reliefs facing the correct direction. Additionally, confirm that the small-end of the conrod is honed to the appropriate size for a proper fit.
What type of valve reliefs do the BH572-950-020 pistons have?
The BH572-950-020 pistons feature two valve reliefs. This design helps accommodate larger camshaft profiles while preventing piston-to-valve contact, which is critical for high-performance applications. Ensure your camshaft selection is compatible with this piston design.
