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Mod | | | Forums66 Topics128,042 Posts1,055,509 Members48,424 | | 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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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#73759 02/23/2007 4:10 AM | Joined: Feb 2007 Posts: 13 Junior Member | | Junior Member Joined: Feb 2007 Posts: 13 | I have a military 302 with holley two barrel,does anybody know what carb came stock on the civilian 302? I would like to know if a 270 or 248 water pump woud work on the 302?
Thanks Wayne | | |
#73760 02/23/2007 4:55 AM | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy masseyharris, my 59 has a stromberg on it, i'm not sure about impeller differences, but I do believe the waterpumps interchange, hope that helps. | | |
#73761 02/23/2007 7:16 AM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Most civilian 302's came with a 2bbl Holley AA-1, which is a variation of the Holley 94 which came on Flathead fords. The AA1 has bigger venturi.
The bolt pattern on the civilian 302 is 3-bolt, I think most military ones are the 4-bolt.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
#73762 02/23/2007 8:05 AM | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | Wayne, It doesn't really matter which carb was original for the 302, unless you are going for complete originality. Tell us a little about your project as you already have many of us salavating over that 302!   The 302s are great engines and can be ran with a variety of different fuel setups. The Military version had a super low compression ratio... 6.5:1 so it could run on 67 octane gasoline. The Low compression ratio Military blocks almost begs for a blower, giving you 200+ hp. With other modifications it is not uncommon to see these 302s running with a 4bbl or even multicarburation with 2- 5 2bbl carbs, or fuel injection. | | |
#73763 02/23/2007 8:22 AM | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | You Know... I forgot to welcome you to the site. I just went back and read your first post... 2 1953 Canadian Jimmies that you are trying to make 1 out of. Pretty cool. Keep us up on your progress. | | |
#73764 02/25/2007 1:45 AM | Joined: Feb 2007 Posts: 13 Junior Member | | Junior Member Joined: Feb 2007 Posts: 13 | I have two 1953 canadian gmc which have the chev 216 engine.One truck runs but is rusty the other truck has good sheet metal.I was just given a complete american gmc chassis with a 248 and a three speed.The 248 is a standard bore,but needs a rebore,and a crank grind.I have not pulled the 302 apart yet,but I am leaning towards the 302,I am old school I believe big is better.I was considering a small four barrel carb,and using the 248 distributor with vacuum advance.
I am an engine machinist for detroit diesel canada,although I apprenticed as an auto mechanic.
thats about it
I restore and pull antique masseyharris tractors
thanks Wayne | | |
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