Chevy LS3 Flat top -3.5cc All std 15 deg/ L92 4.080 bore, 3.622 stroke, 6.125 rod 10.0 to 1 Comp with 70cc head (CP Bullets BLS1127-015)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1127-015 |
|
Bore (in) |
4.08 |
|
Stroke (in) |
3.622 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.295 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
70 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-3.5 |
|
Compression Ratio |
10.1 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.200 / SP |
|
Cubic Inch |
379 |
|
Piston Weight |
475 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS3 Flat top -3.5cc All std 15 deg/ L92 4.080 bore, 3.622 stroke, 6.125 rod 10.0 to 1 Comp with 70cc head (CP Bullets BLS1127-015) |
|---|---|
| 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 compression ratio for the BLS1127-015 pistons?
The BLS1127-015 pistons provide a compression ratio of approximately 10.1:1 when used with a 70cc head. However, actual compression can vary based on the specific engine setup and machining tolerances.
What are the specific machining requirements for the BLS1127-015 pistons?
When installing the BLS1127-015 pistons, ensure that the bore clearance is set correctly according to the engine builder's specifications. Additionally, ring gaps must be tailored to the application, considering factors like RPM and boost levels.
What is the pin size and length for the BLS1127-015 pistons?
The BLS1127-015 pistons feature a pin size of .927 inches and a length of 2.250 inches. Ensure that the connecting rods are compatible with these specifications for proper fitment.
Are there any specific considerations for valve reliefs with the BLS1127-015 pistons?
The BLS1127-015 pistons come with two valve reliefs designed for LS applications. It's crucial to verify that your cylinder heads and camshaft profile are compatible to avoid interference.
What is the weight of the BLS1127-015 pistons, and how does it affect engine performance?
The BLS1127-015 pistons weigh 475 grams each. Lighter pistons can improve engine response and reduce overall rotating mass, but ensure that the engine's balance is maintained during assembly.
