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| | | Forums66 Topics128,088 Posts1,056,413 Members48,443 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2006 Posts: 49 Shop Shark | | Shop Shark Joined: Jan 2006 Posts: 49 | found BIG 650 GMC on Cl.
owner tells me it has distributor on DRIVER side of motor.
what would it be?
he says no GMC on valve cover.
NOT detriot diesel.
its a gasser. | | | | | Joined: Nov 2010 Posts: 1,159 Shop Shark | | Shop Shark Joined: Nov 2010 Posts: 1,159 | It sounds like it may be a 426. Bob Burch has one in Dubuque,Iowa. It's the only G.m.C. engine of that era,(to MY knowledge),that has the intake/exhaust on the passenger-side of the engine. Any pic's? | | | | | Joined: Dec 2002 Posts: 2,549 'Bolter | | 'Bolter Joined: Dec 2002 Posts: 2,549 | Actually the 318, 360, 426, & 503 GMC inline gas 6 cylinders all look the same. According to my GMC Heavy Duty Truck Catalog, a 650 series should have a 318 in it. Check out the flat ledge, at the base of the distributor, for the engine serial no. The first three digits should give you the ci. displacement, if it's not a reman. | | | | | Joined: Jan 2006 Posts: 49 Shop Shark | | Shop Shark Joined: Jan 2006 Posts: 49 | owner was unable to hold clamshell hood open with one hand and lean in to read numbers.
I am VERY aware of GMC numbering-just had ZERO experience w/anything bigger than a 302...
AWESOME!!!
any value to those motors for a hot rod? parts availability?
i is in a 51 gmc in the LA craiglist in the Antelope section. | | | | | Joined: Jan 2006 Posts: 49 Shop Shark | | Shop Shark Joined: Jan 2006 Posts: 49 | heres link http://losangeles.craigslist.org/ant/grd/3838832814.htmland his number; 661-810-8153 [email protected]he says its not been run in 15-20 years hes crass and doesnt want to talk-be nice and warm him up. its a neat old truck but not something I could use.... if it was 302-then we are talking... | | | | | Joined: Apr 2005 Posts: 1,107 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,107 | when i had the 720 series it came with a 426. when i got it, it had a 8.2 detroit fuel pincher in it from the late 70's. ive seen 620's with 503's in them. never saw the 318 or 360 yet  | | |
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