Dodge 397ci Eagle 5.7 Hemi 3.937 bore 4.080 stroke 1.065 CH 10.75:1 CR -9.7cc (CP Bullets BH577-1075-020)
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|
Make |
Dodge |
|
Engine Type |
Hemi |
|
Part Number |
BH577-1075-020 |
|
Bore (in) |
3.937 |
|
Stroke (in) |
4.08 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.065 |
|
Head Type |
5.7 Eagle Hemi 09-17 |
|
Head CC |
64.5 |
|
Dome / Dish Height |
-0.064 |
|
Dom/Dish CC |
-9.7 |
|
Compression Ratio |
10.75 |
|
Pin |
.866 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.160 / -.060 |
|
Cubic Inch |
397 |
|
Piston Weight |
408 |
|
Style |
Inv |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Dodge 397ci Eagle 5.7 Hemi 3.937 bore 4.080 stroke 1.065 CH 10.75:1 CR -9.7cc (CP Bullets BH577-1075-020) |
|---|---|
| Brands | CP Carrillo |
| Engine | Hemi V8 |
| Make | Dodge |
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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 clearance for the BH577-1075-020 pistons?
For the BH577-1075-020 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, final clearance should be determined by the engine builder based on the specific application and operating conditions.
What compression ratio can I expect with the BH577-1075-020 pistons in a 5.7 Hemi?
The BH577-1075-020 pistons provide a compression ratio of 10.75:1 when used with a 64.5cc head. Ensure that your combustion chamber volume and gasket thickness are considered for accurate compression calculations.
What type of ring gaps should I use with these pistons?
The ring gaps for the BH577-1075-020 pistons should be set according to the specific application and intended use. A common starting point is 0.004" per inch of bore for the top rings and slightly more for the second rings, but always consult with your engine builder for precise specifications.
What is the piston weight of the BH577-1075-020, and how does it affect engine performance?
The BH577-1075-020 pistons weigh 408 grams. Lighter pistons can improve engine response and reduce reciprocating mass, but it's essential to balance them with the full rotating assembly for optimal performance and reliability.
Are there any specific machining requirements for the BH577-1075-020 pistons?
Yes, the BH577-1075-020 pistons may require specific machining for proper fitment, including checking bore size and ensuring correct ring land dimensions. Always verify with your engine builder to ensure proper installation and performance.
