ACL Race Main Bearings Chevrolet / GM / Holden / Opel / Saab 170 / 183 / 217 / Z28NEL / Z28NET / LP9 (.025)
ACL

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Write a reviewACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings.
Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of the leading bearing manufacturers.
Bearing data
Part number: 4M2273H
Bearing size: .025
Bearing half type: Upper & lower
Bearing material: F780
Technical data (mm)
Max overall length: 19.75
Max shaft size: 68.008
Max tunnel size: 72.882
Max vertical oil clearance: 0.067
Max wall at crown: 2.422
Min shaft size: 67.992
Min tunnel size: 72.866
Min vertical oil clearance: 0.024
Technical data (in)
Max overall length: 0.7776
Max shaft size: 2.6775
Max tunnel size: 2.8694
Max vertical oil clearance: 0.0026
Max wall at crown: 0.0954
Min shaft size: 2.6768
Min tunnel size: 2.8687
Min vertical oil clearance: 0.0009
Engine code
183 LF1 / 217 LFX / 217 LLT / 217 LY7 / 170 LAU / 170 LP1 / 170 LP9 / 3.0L DI HFV6 / 10HMA / LLT Alloytec / Alloytec LY7 / Z28NEL / Z28NET / LP9
Application
Chevrolet 183ci (3.0L) LF1 (HFV6) V6 DOHC 4v
Chevrolet 217ci (3.6L) LFX (HFV6) V6 DOHC 4v
Chevrolet 217ci (3.6L) LLT (HFV6) V6 DOHC 4v
Chevrolet 217ci (3.6L) LY7 (HFV6) V6 DOHC 4v
General Motors 170ci (2.8L) LAU (HFV6) (Cadi) V6 DOHC 4v Turbo
General Motors 170ci (2.8L) LP1 (HFV6) (Cadi) V6 DOHC 4v
General Motors 170ci (2.8L) LP9 (HFV6) (Cadi) V6 DOHC 4v Turbo
General Motors 183ci (3.0L) LF1 (HFV6) (Cadi) V6 DOHC 4v
General Motors 217ci (3.6L) LFX (HFV6) (Cadi) V6 DOHC 4v
General Motors 217ci (3.6L) LLT (HFV6) (Cadi) V6 DOHC 4v
General Motors 217ci (3.6L) LY7 (HFV6) (Cadi) V6 DOHC 4v
Holden 3.0L LF1 SIDI (Alloytec) HFV6 DOHC 4v
Holden 3.2L 10HMA (Alloytec) HFV6 DOHC 4v
Holden 3.6L LLT SIDI (Alloytec) HFV6 DOHC 4v
Holden 3.6L LY7 (Alloytec) HFV6 DOHC 4v
Opel Z28NEL (HFV6) 2792cc V6 DOHC 4v Turbo
Opel Z28NET (HFV6) 2792cc V6 DOHC 4v Turbo
Saab LP9 (HFV6) 2792cc V6 DOHC 4v Turbo
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