V6 Chevy 90 degree engines
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[[File:4.3 L V6 MerCruiser Alpha One Generation Two Vortec Intake w- 2 barrel carb c-n GM 12552422.jpg|thumb|left|350px|1996-up 4.3 L V6 MerCruiser Vortec dual plane intake for 2 barrel carb, c/n GM 12552422]] | [[File:4.3 L V6 MerCruiser Alpha One Generation Two Vortec Intake w- 2 barrel carb c-n GM 12552422.jpg|thumb|left|350px|1996-up 4.3 L V6 MerCruiser Vortec dual plane intake for 2 barrel carb, c/n GM 12552422]] | ||
[[File:1993 Mercruiser 4.3 LX V6 SQUAREBORE INTAKE P-N 14095286, CARTER CARB -339196005.jpg|thumb|center|300px|1995-back Mercruiser 4.3 V6 squarebore P/N 14095286, Carter carb 339196005]] | [[File:1993 Mercruiser 4.3 LX V6 SQUAREBORE INTAKE P-N 14095286, CARTER CARB -339196005.jpg|thumb|center|300px|1995-back Mercruiser 4.3 V6 squarebore P/N 14095286, Carter carb 339196005]] | ||
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| + | ==Rear main oil seal== | ||
| + | In 1985 the 4.3 L V6 rear main seal was a 2-piece design, identical to the SBC. Beginning in 1986, the 4.3 L started using a 1-piece rear main seal, just like the SBC engines. | ||
==Oiling system== | ==Oiling system== | ||
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