crack or scar?
 

bought this motor 3 yrs ago put it in my regal with full duals notice heavy white smoke coming out driverside pipe ...first thought head gasket or head...pulled heads nothing odvious but found crack or scar in one cylinder wall...was thinking of souping this one up for my new 86 monte ss just dont if this block is worth the trouble....all in all it ran strong fired up every time and garage kept....

it looks to me almost like a scar to be safe i'd say see what a machine shop has to say

pics
 

hope so the motor was strong... my new baby got her for $700 the 305 in her is ok but wanna make a performer out of her have alot of donor parts from my regal

i agree the 305 that came in them are ok and if it's a true ss u have the L69 with a smidgin beter hp than my LG4 only difference is the cam... but deff need a little assistance

Looks like that Monte has a lot of potential! :)

looks like a scar, almost looks too wide and not deep enough to be a crack

Have a machine shop check it to find out 4 sure. I built up a Furd 390 quite a few years ago for a 4x4, and it took 3 or 4 blocks b4 I found a good 1.

Lol i like the file names of your pics! and I do agree that im sure its just a scar.

Definally take it to a machine shop. White smokes usually means your burning water\anti-freeze. A good machine shop will maga-flux it to see if there are any cracks in the block. Also get the heads fluxed too just to make sure there isn't a crack in one of them. It looks like scar to me too. If its just a scar, a .030 overbore will probably clean it up. it just depends how deep it is.

did a numbers check before i bought it.its a tru ss but i think at some point it got rear ended that would explain the sc monte trunk deck and bumper but i'm lovin the fiberglass hood its cracked at the closer think i'll repair it and just put hood pins on it instead of latch