Hi I have a 350 out of a 71 vette that is going into my 69 Chevelle the engine is a l-48 so mostly all stock 8.5/1compression but I read 4 speed cars came with a little higher compression like 8.9 or so which this engine was originally mated to an m20 but what I have done is installed a comp cams xe268 and a torker intake with an edelbrock 600 I am wondering if I will make more than the stock 270 horse rating hopefully around 300ish?
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get a set of 2.02 chevy heads 64 cc chambers,slap a 480something lift/284 duration cam in her,daul plane intake,600-650 holley,and a set of cheapo headers,and you will have a good motor with 350 hp or so...can do all this with the block in the car-and some 373 gears-
well there goes your budget!!!!! probly do it for 1500 bucks minus the gear change-ebay-jegs,summit,
summit sells 2.02 heads prepaired by dart for a good price per pair-they will up the comp ratio ,your heads are most likely 78 cc chambers-and it will still do pump gas-been there done that and that old 350 would rev to 7200rpm,make power to bout 6800 or so--
if you do this the torker will work also,in my opinion dual plains are for motors making power to 5500 or so-the above will go beyond that rpm for sure......
don't go over 650 with the carb,a 650 will run muuuuuch cleaner on your motor....as compaired to a 750-800 or so..
how many times did I say OR SO????
just my lame 2 cents