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**f66** · 01-06-2018, 11:30 AM

Engine Casting Number, Casting Date and Assembly Date Question. Has anyone done research on known original trucks to figure out relationship of engine block casting date, engine assembly date, and vehicle final assembly? I have a 1966 Custom Camper built in Fremont, mid-June 1966. Am building a new engine. 327, with 3858174 block, the casting date is L-3-5 which equals December 3, 1965. The Flint assembly date = 1209 YH = December 9, 1965.
Is this block to early for my June built truck?

Thanks, Frank

01-06-2018, 11:30 AM	#453
f66 Junior Member Join Date: Apr 2017 Location: columbia, maryland Posts: 94	Re: The 1960 - 1966 Chevrolet & GMC Pickups Factory Correct Restoration Thread Engine Casting Number, Casting Date and Assembly Date Question. Has anyone done research on known original trucks to figure out relationship of engine block casting date, engine assembly date, and vehicle final assembly? I have a 1966 Custom Camper built in Fremont, mid-June 1966. Am building a new engine. 327, with 3858174 block, the casting date is L-3-5 which equals December 3, 1965. The Flint assembly date = 1209 YH = December 9, 1965. Is this block to early for my June built truck? Thanks, Frank