Chevy LS3 Flat top -2.7cc All std 15 deg/ L92 4.070 bore, 3.622 stroke, 6.125 rod 10.6 to 1 Comp with 66.5cc head (CP Bullets BLS1121-005)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1121-005 |
|
Bore (in) |
4.07 |
|
Stroke (in) |
3.622 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.305 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
66.5 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-2.7 |
|
Compression Ratio |
10.6 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
377 |
|
Piston Weight |
454 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy LS3 Flat top -2.7cc All std 15 deg/ L92 4.070 bore, 3.622 stroke, 6.125 rod 10.6 to 1 Comp with 66.5cc head (CP Bullets BLS1121-005) |
|---|---|
| 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 size for the BLS1121-005 pistons?
The BLS1121-005 pistons are designed for a bore size of 4.070 inches. Ensure your engine block is machined to this specification for optimal performance.
What compression ratio can I expect with these pistons?
These pistons provide a compression ratio of 10.6:1 when used with a 66.5cc cylinder head. Keep in mind that actual compression may vary based on machining tolerances and other factors.
What is the weight of the BLS1121-005 pistons?
Each BLS1121-005 piston weighs 454 grams. This weight is important to consider for balancing your rotating assembly.
What type of valve reliefs do the BLS1121-005 pistons have?
The BLS1121-005 pistons feature two valve reliefs, which are designed to accommodate standard LS engine valve sizes. Ensure proper clearance during installation.
What is the pin size for the BLS1121-005 pistons?
The BLS1121-005 pistons use a pin size of .927 inches by 2.250 inches. Make sure your connecting rods are compatible with this pin size for proper fitment.
