Just put in a rebuilt 355 with a 600 edelbrock. The block used vin number is 23gm 3970010. I know its a vettes engine from 1969-1979. Are these good blocks and is there anything special about them? Also what does 23gm mean?

 

not sure if this will do anything for you...http://www.nastyz28.com/sbchevy/sblock.php, but I'm still looking!

 

thanks! i hope u can find more info. i cant find anything

 

is it a 4 or 2 bolt either way realy it's a good block, they have either a high nickle or hight tin block can't remember which

 

4 bolt

 

also i bought the monte from an old lady. its a 1985 monte carlo ls. to day i jacked up the rear end and its posi. did ls's come with that option?

 

i mean se not ls

 

Years Casting CID Low Power High Power Main Caps
1969-79 3970010 350 185 370 2 or 4

Comments
car, truck,Vette

you have some pretty good numbers for that motor I would say the high power refers to the vette

 

damn thats as a 350 we bored it .030 now