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Engines and Components› Pistons and Piston Rings
RACE TEC PISTONS
GM LS FT Piston Set 4.125 Bore -4.1cc
SKU: R0AE 1001165
Advanced — 4+ hours
Overview
Constructed from 2618 alloy, these pistons offer varying compression ratios depending on the combustion chamber volume: 12.1:1 at 65cc, 11.8:1 at 68cc, and 11.6:1 at 70cc. The crown volume is -4.1cc.
Show original supplier description
Part #: 1001165
Piston - AutoTec - Flat Top - Forged - 4.125 in Bore - 1.5 x 1.5 x 3.0 mm Ring Grooves - Minus 4.10 cc - GM LS-Series - Set of 8
Vehicle Symptoms
- Engine knocking or pinging under load
- Loss of compression in one or more cylinders
- Excessive oil consumption past piston rings
- Rough idle and misfire at high RPM
- Reduced engine power and poor acceleration
Diagnostic Codes
- P0300 – random misfire
- P0301 – Cylinder 1 misfire Det
- P0302 – Cylinder 2 misfire Det
- P0303 – Cylinder 3 misfire Det
- P0304 – Cylinder 4 misfire Det
- P0305 – Cylinder 5 misfire Det
- P0306 – Cylinder 6 misfire Det
- P0307 – Cylinder 7 misfire Det
- P0308 – Cylinder 8 misfire Det
- P0263 – Cylinder 1 Contribution/Balance
- P0266 – Cylinder 2 Contribution/Balance
- P0269 – Cylinder 3 Contribution/Balance
- P0272 – Cylinder 4 Contribution/Balance
- P0275 – Cylinder 5 Contribution/Balance
- P0278 – Cylinder 6 Contribution/Balance
Relevant Conversations
- LS engine knocking at high RPM need new pistons
- Best forged pistons for 428 LS build
- 4.125 bore flat top piston set for LS
- P0300 misfire after rebuild compression low
- Race Tec vs Wiseco forged pistons LS
- LS 15 degree piston compression height 1.115
- 428 stroker piston set 6.125 rod
- Oil consumption after piston ring failure LS
- 2618 alloy forged pistons for boosted LS
- Installing forged pistons in LS engine time
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
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Specifications
| Brand | RACE TEC PISTONS |
| Part Number | R0AE 1001165 |
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