The first 3 numbers of a GMC engine number are the engine size. Yours is a 228. You mis-read the 8 as a 3.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.