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powell72 · 04-27-2008, 06:29 AM

I don't know about the years but a 3970010 is a 350 that usually is a four bolt block. But not always.

04-27-2008, 06:29 AM	#24
powell72 Senior Member Join Date: Jan 2005 Location: Loveland Co. Posts: 3,098	Re: Barn find resurrection I don't know about the years but a 3970010 is a 350 that usually is a four bolt block. But not always. __________________ Chris 74 Custom Deluxe SWB 350/350/3.73’s 99 2wd Silverado RCSB 5.3/4L60/3.90’s http://www.classictrucks.com/feature...short_bed.html