289 HiPo is characterized externally by:
VIN # stamp on block near pan, usually right rear edge where block/pan meet.
Heads with casting numbers 19, 20, 21.
Aluminum water pump (open impeller type, no steel backing plate).
Swept free-flowing exhaust manifolds looking more like headers.
Large alternator pulley
Larger harmonic balancer
Holley 4v carb (instead of Autolite).
Engine dress up kit
Engine/Car is more valuable when VIN's match.
Solid lifters (when engine is running there's unmistakable engine valve clatter)
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