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motornut · 09-08-2011, 10:15 AM

thats the block number in my 78 jimmy,
350 and its got 4 bolt mains
never did figure the other (alt)numbers out

09-08-2011, 10:15 AM	#9
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: Who's Idea Was It To Put Engine #s.... thats the block number in my 78 jimmy, 350 and its got 4 bolt mains never did figure the other (alt)numbers out Attached Images __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350