what size of motor does a 1982 buick lesabre have

You have two dates listed. Here are the specs for a 1992 Engine 3.8 L Series I Buick 3800 V6 3.8 L Series II Buick 3800 V6 Transmission 4-speed 4T60-E automatic 4-speed 4T65-E automatic Here are the specs for 1982 models Engine 231 cu in (3.8 L) Buick V6 252 cu in (4.1 L) Buick V6 301 cu in (4.9 L) Pontiac V8 307 cu in (5.0 L) Oldsmobile V8 350 cu in (5.7 L) Buick V8 350 cu in (5.7 L) Oldsmobile Diesel V8 403 cu in (6.6 L) Oldsmobile V8 Transmission 3-speed Turbo-Hydramatic automatic 4-speed THM200-4R automatic To narrow down your exact engine size, check under specifications in the owners manual of your glove box. Sometimes there is a sticker on the under side of the hood with specs.