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0.010 in / 0.254 mm undersize main-bearing set for selected Gen I Chevrolet Small Blocks using approximately 2.45 in main journals. For a -0.010 in ground crankshaft only.
MS-909A-10
MS-909A
zł283.99
Tax included
| Waiting time 3 weeks
0.010 in / 0.254 mm undersize main-bearing set for selected Gen I Chevrolet Small Blocks using approximately 2.45 in main journals. For a -0.010 in ground crankshaft only.
MAHLE Clevite MS-909A-10 is a 0.010 in / 0.254 mm undersize crankshaft main-bearing set for selected traditional Chevrolet Small Block V8 engines using approximately 2.45 in main journals. The -10 version is for a crankshaft ground 0.010 in undersize and must not be installed on an STD crankshaft.
Application / fitment
The MS-909A family is used in many first-generation Chevrolet Small Block engines. Fitment depends on main-journal diameter, block design and model year.
- selected Chevrolet Small Block 265 / 4.3 L
- selected 283 / 4.6 L, 302 / 4.9 L and 305 / 5.0 L
- selected 307 / 5.0 L, 327 / 5.4 L and 350 / 5.7 L
- other GM applications using the same block and approximately 2.45 in main journals only after catalog confirmation
Exclusions: the set is not for the Chevrolet Small Block 400 with approximately 2.65 in main journals and is not for LS-family engines. Do not use the -10 bearing set unless the crankshaft has been correctly ground 0.010 in undersize.
Fitment condition: measure every journal with a micrometer, check the block housing bores and verify oil clearance. The catalog STD journal range is 2.4484–2.4493 in / approximately 62.189–62.212 mm. After a correct 0.010 in grind, the expected journal range is approximately 2.4384–2.4393 in / 61.935–61.958 mm.
Installation note: bearing shells and housing bores must be perfectly clean. Do not apply oil between the bearing back and block. Measure oil clearance, thrust clearance and crankshaft freedom after each main-cap tightening stage.
Technical information
- manufacturer: MAHLE Clevite
- base number: MS-909A
- product size: MS-909A-10
- type: crankshaft main-bearing set
- undersize: 0.010 in / 0.254 mm
- material / series: Clevite AL-5
- STD journal range: 2.4484–2.4493 in / 62.189–62.212 mm
- expected -0.010 in journal range: 2.4384–2.4393 in / 61.935–61.958 mm
- block housing bore: 2.6406–2.6415 in / 67.071–67.094 mm
- catalog components: MB2508A and thrust MB2509A(F)
- engine family: selected Gen I Chevrolet Small Blocks using approximately 2.45 in mains
- sale unit: 1 complete engine set
