Chevy 416ci All LS 15° / L92 Bore 4.070 CH 1.110 Stroke 4.000 Rod 6.125 Flat Top 68cc Head (CP Bullets BLS1142-070)
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|
Make |
Chevrolet |
|
Engine Type |
LS Series |
|
Part Number |
BLS1142-070 |
|
Bore (in) |
4.07 |
|
Stroke (in) |
4 |
|
Rod Length (in) |
6.125 |
|
Comp Height |
1.11 |
|
Head Type |
Std 15 deg/ L92 |
|
Head CC |
68 |
|
Dome / Dish Height |
FT |
|
Dom/Dish CC |
-2.7 |
|
Compression Ratio |
11 |
|
Pin |
.927 x 2.250 |
|
Ring Thickness |
1.5 x 1.5 x 3.0mm |
|
VR Depth |
-.175 / SP |
|
Cubic Inch |
416 |
|
Piston Weight |
458 |
|
Style |
FT |
|
Valve Reliefs |
2 VR's |
|
Gas Port |
No |
| Product Name | Chevy 416ci All LS 15° / L92 Bore 4.070 CH 1.110 Stroke 4.000 Rod 6.125 Flat Top 68cc Head (CP Bullets BLS1142-070) |
|---|---|
| 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 BLS1142-070 pistons?
The BLS1142-070 pistons are designed to achieve a compression ratio of 11:1 when used with 68cc L92 heads. Ensure that your engine's overall setup, including head gasket thickness and combustion chamber volume, is accounted for to achieve this ratio.
What is the pin size for the BLS1142-070 pistons?
The BLS1142-070 pistons feature a pin size of .927 inches with a length of 2.250 inches. Ensure that your connecting rods are compatible with this pin size for proper fitment.
What are the ring specifications for the BLS1142-070 pistons?
The BLS1142-070 pistons come with a ring thickness of 1.5mm for both the top and second rings, and a 3.0mm oil ring. Proper ring gap settings should be determined by your specific application and tuning requirements.
What machining considerations should I keep in mind when using BLS1142-070 pistons?
When installing BLS1142-070 pistons, ensure that the cylinder bores are honed to the correct clearance for a 4.070 inch bore. Additionally, confirm that the piston-to-wall clearance and ring gaps are set according to your engine's specifications for optimal performance.
Are there any specific installation notes for the BLS1142-070 pistons?
When installing the BLS1142-070 pistons, ensure that the valve reliefs are oriented correctly to avoid interference with the valves. Additionally, check that the piston weight of 458 grams is suitable for your rotating assembly to maintain balance.
