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Access Buick  wiring diagrams and repair procedures. Learn how to repair, install or remove a part, reset engine lights...
Buick 401 Engine (V8, 401 cid, 6.6L)
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This Buick 401/6.6L engine/motor can fit the Riviera, Skylark, Electra, Gran Sport, Wildcat and some other Buick car and/or truck applications - for more details see your automobile manual.


1967 Buick 401 No smog
Engine DescriptionSizeVINPrice/Core
1967 Buick 401 No smog

401/6.6LX, Y$1,804/$400
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1965 - 1966

1965 Buick 401 Big block, spin-on oil filter.
Engine DescriptionSizeVINPrice/Core
1965 Buick 401 Big block, spin-on oil filter.

401/6.6LE, Y$1,865/$500
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For troubleshooting tips and repair information on the Buick 401/6.6L engine, please visit our Information page.