I'll bet it spent some time sitting underneath a pine tree. My grandmother'* neighbor had a Pacer sitting under a pine, and the needles piled up around the roof rack, then covered the entire roof. Well, until all the water retained by the needles rusted the roof out until the mass of rusty pine needle glop dropped into the interior.

that engine is a 258 cu inches AMC 6 cyl and its been around a lot acar ans later it was fuel injected and was made smaller at 4 litres .at the time the was clifford research that made 4 barrel intake for them and cam maybe they still do

Yes, they do. BUt that isn't the engine mine has, I've got the 151 Iron Duke. Wasn't that used in some Bonnevilles?

oh i see yeah that a pontiac 4 they made speed stuff for that to that 4 as the same bore and stroke as the 302 v8 chevy z28 .i know those engine were noisy when the got high millage they sound almost like a diesel

Ummmm.....No. Bonnevilles have never had an engine that small. The 3800 is the smallest ever used. V8'* (including Diesel) and V6'* only.

Then it must've been the Grand Ams or Grand Prixs

Hey!! Thems fighting words...

I didn't now Wikipedia listed the cars it was used in
1981-1983 Eagle
1980-1982 AMC Concord/Spirit
1977 Pontiac Astre
1978-1980 Pontiac Sunbird
1984-1988 Pontiac Fiero
1982-1985 Chevrolet Camaro
1985-1990 Chevrolet Astro
1985-1990 GMC Safari
Chevrolet Celebrity
Chevrolet *-10
Chevrolet *-10 Blazer
GMC Sonoma
GMC *-15 Jimmy
Chevrolet Monza
Buick Skylark
Buick Skyhawk
Buick Century
Pontiac 6000
1985-1991 Pontiac Grand Am
Oldsmobile Ciera
Oldsmobile Omega
AMC Concord/Spirit (1980-82)
Jeep CJ (1980-83)
Grumman LLV United States Postal Service delivery vehicle

And the Crossflow was used in
1985-1993 Chevrolet *-10 Blazer/GMC *-15 Jimmy
1990-1992 Chevrolet Lumina
1984-1988 Pontiac Fiero
1982-1992 Oldsmobile Cutlass Ciera, Buick Century
1985-1991 Pontiac Grand Am, Pontiac 6000, Oldsmobile Cutlass Calais, Chevrolet Celebrity
1985-1987 Buick Somerset
1986-1991 Buick Skylark

Wikipedia cross references the H platform at the bottom of that article. That doesn't seem right. Wonder if they meant to reference A or W platform...

Wikipedia is notoriously inaccurate and incorrect. It depends on who puts the information in.

The H body never saw anything smaller than a 3800.