Guest Straight eight Posted August 5, 2001 Share Posted August 5, 2001 How can I identify a late 248 cu in engine as compared to a 263 cu in engine? The manifold has been removed. Under the manifold side of the engine is what looks like a plumbers pipe plug threaded into the block. It is not one of the freeze plugs, but on line with them, and the casting has a provision built into the block. Link to comment Share on other sites More sharing options...
Guest Posted August 5, 2001 Share Posted August 5, 2001 How I tell is by water pump. The 1949 & 1950 water pumps are completely different & 1950 was the last of the 248's. The '49s pumped the water into the block directly behind the pump whereas the 50's pumped into the left side via a water neck, so try looking for that or the hole location for the water jacket. By 1950, the 248s were only in the Specials, the Supers had the 263.<BR>Hope this helps Link to comment Share on other sites More sharing options...
Guest Posted August 5, 2001 Share Posted August 5, 2001 You might measure the width of the push-rod cover,the 263 uses a narrower gasket there,also,were you to take the push-rod cover off,the 263 has a cast ridge coming up a bit from the bottom(less apt to leak oil) Link to comment Share on other sites More sharing options...
Guest oldtimer Posted August 6, 2001 Share Posted August 6, 2001 1952 was the last year for the 248 (1950 was the first year for the 263) and the last year for a str. 8 was 1953 (the 263). the special was a 248, the super was a 263 and the roadmaster was a 320. the 248 and 263 are the same block and acc., with out looking at part # its going to be real hard to tell the difference between the two. Link to comment Share on other sites More sharing options...
Guest Posted August 6, 2001 Share Posted August 6, 2001 I would doublecheck your sources of info--everything i have says that 1950 is the last 248, the 50-52 Supers and 51-53 Specials had the new 263 Link to comment Share on other sites More sharing options...
Guest oldtimer Posted August 7, 2001 Share Posted August 7, 2001 lotsabuicks I sit corrected, your right. 1950 was the 248s last year in the sun. Link to comment Share on other sites More sharing options...
Guest Straight eight Posted August 7, 2001 Share Posted August 7, 2001 Thanks for the help. This one is strange, the serial number has been hand stamped and has a "B" prefix. Having been located in Flint, could this have been a "B"uick factory trial engine? A replacement engine? Why a B prefix? The B is followed by six digits starting with a 1. Anyone have any ideas? Link to comment Share on other sites More sharing options...
Guest Straight eight Posted August 8, 2001 Share Posted August 8, 2001 Thanks to everyone who helped. The Grand prize must be split between Mr.Buick714, and The Old Guy. Between the two of them it was determined that the 263 tappet cover is 5 and 1/4 inches with a drain plug at the rear center of the pan. The 248 cover is 5 and 3/4 inches and has a drain plug on the right side half way back. nMr Buick gave me the idea, and The Old Guy furnished the measurments. Thanks again to all!!!!!!!! Link to comment Share on other sites More sharing options...
Guest Posted August 8, 2001 Share Posted August 8, 2001 I turned 81 a couple weeks ago.How old is the "old guy" Anyhow you are welcome fellers! Link to comment Share on other sites More sharing options...
Guest oldtimer Posted August 8, 2001 Share Posted August 8, 2001 uhhh i know i'm not the "oldguy" but i just turned ...............32. Link to comment Share on other sites More sharing options...
The Old Guy Posted August 8, 2001 Share Posted August 8, 2001 MR,Buick ,I am just a youngster compared to you . I am only 68 ,but all the GS club members call me "The Old Guy " because most of the drag racers are younger than me. Link to comment Share on other sites More sharing options...
AK Buickman Posted August 10, 2001 Share Posted August 10, 2001 Hey young guys...<BR>Watch out for those old guys. They think and act no different than us, except they've jammed gears a bit more times.<P>AK Buickman (neither an old or young guy) Link to comment Share on other sites More sharing options...
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