Chevy LS 370ci All 15°/L92 Bore 4.030 CH 1.330 Stroke 3.622 Rod 6.098 Flat Top Head 68 (CP Bullets BLS1145-030)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1145-030 |
|
Bore (in) |
4.03 |
|
Stroke (in) |
3.622 |
|
Rod Length (in) |
6.098 |
|
Comp Height |
1.33 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
68 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-2.7 |
|
Compression Ratio |
9.8 |
|
Pin |
.945 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
370 |
|
Piston Weight |
454 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS 370ci All 15°/L92 Bore 4.030 CH 1.330 Stroke 3.622 Rod 6.098 Flat Top Head 68 (CP Bullets BLS1145-030) |
|---|---|
| Brands | CP Carrillo |
| Engine | GM / LS |
| Make | Chevrolet, GM, Holden, LS Chev |
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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 BLS1145-030 pistons?
For the BLS1145-030 pistons, a typical bore clearance of 0.0030" to 0.0035" is recommended. However, it's essential to confirm this with your specific engine build and intended use.
What compression ratio can I expect with the BLS1145-030 pistons in an LS engine?
The BLS1145-030 pistons provide a compression ratio of approximately 9.8:1 when used with standard 68cc L92 cylinder heads. Adjustments may be necessary based on your specific setup and head gasket thickness.
What is the weight of the BLS1145-030 pistons and how does it affect performance?
The BLS1145-030 pistons weigh 454 grams. While this weight is suitable for performance applications, consider the overall rotating assembly balance and intended RPM range to ensure optimal performance and reliability.
Do the BLS1145-030 pistons require any special machining?
Yes, the BLS1145-030 pistons may require specific machining for proper fitment, including checking and possibly honing the bore for correct clearance. Always consult with your engine builder for precise requirements.
What type of valve reliefs do the BLS1145-030 pistons have?
The BLS1145-030 pistons feature two valve reliefs designed to accommodate LS engine configurations. Ensure that the reliefs align correctly with your specific cylinder head and camshaft setup.
