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1project2many · 04-26-2012, 03:45 PM

GMC here in the US did use Pontiac powerplants. I owned a 56 for a while with an original 2bbl 316 CI engine. The Chevy V8 available in '56 was the 265 rated at 155 HP while the Pontiac / GMC "317" was rated at 180 hp. Judging by the door plate that truck was equipped with the Pontiac / GMC engine.

HTH

04-26-2012, 03:45 PM	#7
1project2many Registered User Join Date: Mar 2012 Location: Lakes Region NH Posts: 3,157	Re: 1956 Napco GMC GMC here in the US did use Pontiac powerplants. I owned a 56 for a while with an original 2bbl 316 CI engine. The Chevy V8 available in '56 was the 265 rated at 155 HP while the Pontiac / GMC "317" was rated at 180 hp. Judging by the door plate that truck was equipped with the Pontiac / GMC engine. HTH Last edited by 1project2many; 04-26-2012 at 04:07 PM.