Authenticity reference

LS5 454 engine proof

numbers matching · reported

Reference Details

Confidence: reported
Correct value: Engine pad stamping, casting/date context and paperwork should align with a 1971 LS5 454 Monte Carlo SS claim
Where to check: Engine pad ahead of passenger-side cylinder head, engine casting/date locations, build records

1 linked car page.

1971 Chevrolet

RPO Z20 Monte Carlo SS package, listed at 1,919 units in the checked 1971 options table