hey guys, long time no post for me well been flip floppin on keepin my bird or not, and since no one will buy it, im keepin it

anywho i was just curious about the casting numbers i found on this engine i bought from a hick a year ago, 350 from a 75 chevelle laguna, who said it made 385 horse and all he could tell me was it was bored over and his bro rebuilt it, well ive gotten smarter since then and was curious bout these casting numbers and if these actually are good heads....

354484 and under that was J 31 75 this was on the drivers side head and the number on the passenger side head was the same cept i think it said J 31 70, there was alot of gunk and hard to make out even after cleaning it off a little

im only curious cause im raisin the flag and my friend thinks this 350 actually makes 385 horse, with the stamped steel rockers, stock intake, stock q-jet..... and lookin like the stock heads. if any work was done on them it was chitty cause the holes between where the pushrods come out are all chipped and cracked and stuff. sorry for the rant

 

i looked on www.mortec.com and i found 354434 not 84, i think this is what i have, the years matched to what he said but they are 305 heads according to mortec, they made 305s in 75?

 

alright..... i guess i answered my own question

but would a 350, bored .30 over, with 305 heads, and using mild cam, but stock stamped rocker arms, stock q-jet, stock intake make anywhere near 385 horse?

ive been told no on here before, but now that i got some more info id just like to know thanx for any help:lala:

 

Stock, unported, 305 heads with a "mild" cam, more than likely not.

Many a magazine has put Vortec heads, Comp Cams SE268 cam (not mild at all), headers, Edelbrock RPM Air Gap intake, and a Holley 750 VS carb with 1-5/8" headers and made near, if not slightly more than 400 (magazine inflated) HP.

That's far from stock 305 heads, stock intake, and stock Q-jet.

Realistically, you may be putting out up to 250 HP, but that would be based on what kind of "mild" cam is in the car.

 

thanks for the reply, i figured this guy was full of it, if he cant give me my money back it looks like i will just leave it on his front lawn

 

That is correct to be 350 heads 2.02 valves

 

354484 are 350 2.02 valve heads