Big Block Chrysler 4.375 bore, 3.750 stroke, 6.768 rod, 2.060 CH, +8.3 cc dome, 1/16, 1/16, 3/16 ring (CP Bullets BM4001-055)
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
|
Make |
Chrysler |
|
Engine Type |
BB Chrysler |
|
Part Number |
BM4001-055 |
|
Bore (in) |
4.375 |
|
Stroke (in) |
3.75 |
|
Rod Length (in) |
6.768 |
|
Comp Height |
2.06 |
|
Head Type |
BB Chry OC/CC |
|
Head CC |
78 |
|
Dome / Dish Height |
0.35 |
|
Dom/Dish CC |
7.3 |
|
Compression Ratio |
11.6 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1/16 x 1/16 x 3/16 in. |
|
VR Depth |
-.250 / SP |
|
Cubic Inch |
451 |
|
Piston Weight |
687 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Big Block Chrysler 4.375 bore, 3.750 stroke, 6.768 rod, 2.060 CH, +8.3 cc dome, 1/16, 1/16, 3/16 ring (CP Bullets BM4001-055) |
|---|---|
| Brands | CP Carrillo |
| Engine | Chrysler |
| Make | Chrysler |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
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 BM4001-055 pistons in a Big Block Chrysler engine?
The BM4001-055 pistons are designed to achieve a compression ratio of approximately 11.6:1 when used with a 78cc cylinder head. Ensure that your engine's specific configuration and fuel quality can support this ratio for optimal performance.
What are the specific machining requirements for the BM4001-055 pistons?
When installing the BM4001-055 pistons, ensure that the bore clearance is set according to your engine's specifications. Additionally, check that the ring gaps are properly set, as these pistons feature a 1/16 x 1/16 x 3/16 ring configuration.
What is the weight of the BM4001-055 pistons and how does it affect engine balance?
The BM4001-055 pistons weigh 687 grams each. It's crucial to consider this weight when balancing the rotating assembly, as it can impact engine performance and reliability, especially at higher RPMs.
Do the BM4001-055 pistons require specific valve relief considerations?
Yes, the BM4001-055 pistons come with two valve reliefs. Ensure that your cylinder heads and camshaft profile are compatible to avoid any clearance issues during operation.
What is the pin size for the BM4001-055 pistons?
The BM4001-055 pistons use a pin size of .990 x 2.750 inches. Verify that your connecting rods are compatible with this pin size to ensure proper fitment.
