Ok so i ran google search after google search im hoping a gm guru gets this i have a intake cast # 6271081 now i ran a search the only thing i found is that its off of a 1973 gm but no other info .. i am trying to find out what size motor this came off of, the size of ports and most important what base model carburetor came with this intake ... it had a rochester 2 barrel carb on it and i bought the mr gasket adapter plate for rochester 2bbl to holley ... i was going to run my 2300 series 2 barell 500cfm carb on it so i was happy was hell i opened it up and immediatly it was a recipe for disaster . the adapter plate was instantly set up for faliure there was a big gap between my intake and the base of the adapter plate i tried to make a gasket to assist in but i knew in the back of my mind that a vaccum failure was bound to happen so i figured what the hell ill try it and yes major vaccum leak i instantly as soon as i hit the gas i hear it and if i try to put it in gear i instantly stall i kind of knew this was going to happen so i am now,( before writing a letter to mr gasket teling them that there products are inferior and the quality makes me sick) , trying to find out what kind of carb came on this intake because im going to raise hell iif i was right assumong a rochester dual jet 2 barell was the right carb . some one please help me out and also sorry for all caps i just realized and its too late and im too tipsy to re write this whole spheal
i can get pics tomorrow the intake has that casting # i posted as well as gm2 casted right below the #s closer to the carb also the intake has the firing order cast into the manifold ...im thinking 307 just becasue i havent seen this ever ...but the only info i can get is that its a 1973 gm and all the sources are from canadian websites weird and strange usually nastyz28 has all the casting #s one could need but not this time this thing is strange .... im going to look up the part # for the mr gasket adapter plat i wanna say it was 1907 but ill double check that right now
its mr gasket part # 1937 this is the part description right off there website Adapts large Holley 2-bbl. to any Rochester 4-bolt, 2-bbl. base or any Rochester 4-bolt, 2-bbl.carb. to large Holley 2-bbl. base................................1937
I've scrapped 2bbl intakes, can't you get another one off somebody for like a couple beers (not even a six pack)?
No i just sold a bunch of flathead ford parts today for $50 knowing i could have got more just so that i can eat dinner tonight get gas and smokes and a 6 pack thats what happens when a peice of $hit democrat takes office and dont care about the us military ....thanks osama
Oh well fabbed up a new adapter works fine no vacuum leaks so buyer beware don't buy it make your own
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