Big Block 24° N/A BB3 Xtra / Head Hunter 4.625 bore, 4.250 stroke, 6.385 rod, 1.275 CH 46.9cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCRE5333-125)
Big Block 24° N/A BB3 Xtra / Head Hunter 4.625 bore, 4.250 stroke, 6.535 rod, 1.120 CH 46.9cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCRE5331-125)
Big Block 24° N/A BB3 Xtra / Head Hunter 4.625 bore, 4.250 stroke, 6.385 rod, 1.275 CH 46.9cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCRE5334-125)
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|
Make |
Chevrolet |
|
Engine Type |
Big Block |
|
Part Number |
BBCRE5334-125 |
|
Bore (in) |
4.625 |
|
Stroke (in) |
4.25 |
|
Rod Length (in) |
6.385 |
|
Comp Height |
1.275 |
|
Head Type |
BB3 Xtra / Head Hunter |
|
Head CC |
118 |
|
Dome / Dish Height |
0.65 |
|
Dom/Dish CC |
46.9 |
|
Compression Ratio |
14.3 |
|
Pin |
.990 x 2.750 |
|
Ring Thickness |
1.0 x 1.0 x 3.0mm |
|
VR Depth |
-.310 / .100 |
|
Cubic Inch |
571 |
|
Piston Weight |
707 |
|
Style |
Dome |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
Yes |
| Product Name | Big Block 24° N/A BB3 Xtra / Head Hunter 4.625 bore, 4.250 stroke, 6.385 rod, 1.275 CH 46.9cc dome 1mm, 1mm, 3mm rings (CP Bullets BBCRE5334-125) |
|---|---|
| Brands | CP Carrillo |
| Engine | Big Block Chev |
| Make | GM |
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 bore clearance for the BBCRE5334-125 pistons?
For the BBCRE5334-125 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 specific application and operating conditions.
What compression ratio will I achieve with the BBCRE5334-125 pistons and 118cc heads?
Using the BBCRE5334-125 pistons with 118cc heads will yield a compression ratio of approximately 14.3:1. Ensure that your fuel quality and tuning are suitable for this high compression to maintain reliability.
What type of rings are included with the BBCRE5334-125 pistons?
The BBCRE5334-125 pistons come with a ring set featuring 1.0mm top and second rings, along with a 3.0mm oil ring. Proper installation and gap setting are crucial for optimal performance.
What is the weight of the BBCRE5334-125 pistons and how does it affect engine balance?
The BBCRE5334-125 pistons weigh 707 grams each. It's important to consider this weight when balancing the rotating assembly to ensure smooth operation and minimise vibration.
Are there any specific machining requirements for the BBCRE5334-125 pistons?
Yes, the BBCRE5334-125 pistons may require specific bore honing to achieve the correct clearance. Additionally, ensure that the piston pin bores are checked for proper fitment with the connecting rods.
