Need help on head identification

Can any one tell me by this picture what kind of heads these are they are off a 350 https://goo.gl/photos/6xnDFYoQj5EoVCeR6

Welcome to CHR

Really impossible to tell without casting numbers as Chevy was all over the board with these heads. First thought is perhaps a '69-70 350 041 casting - 1.94/1.50 valves and a pretty decent head used in the 330 horsepower factory builds.

Second thought is possibly 186 or 492 casting which could be 1.94/1.50 or (better) 2.02/1.60 valves as found in the LT1/Z28 engines.

Only guesses - get the casting number and we can help you out.

Thanks that helps yea i it was in a 79 dually but im pretty sure it was swapped into it

Were just the heads swapped, or the whole motor? If the motor, what are the last two or three letters on the deck pad behind the alternator (pass side)?

Only onesbi can find are 01155707 and K06-11-TXD

TXD 1975 350 Application conv.cab VIN L LS9 165HP 4BBL Body Comments C-20 to 3500

Very good info: Chevy Identification Numbers