dont know much about the history of car or motor. 68 camaro flipped 2 or 3 times but is junk. I was told a 307 so i needed some internal parts tear it down I find- 4 barrel cast intake, 194 heads 4 bolt main, GM double roller roller timing chain. Cast codes- 3970010 Pad- 617430 stamp Oil filter- 138N. WR. 010 Timing chain- 3735412 GM # Checked stroke it is a 350. But the stamped pad has me guessing. Run numbers on timing chain and a bunch of early V-8 and a truck motor. Any help on this is it worth keeping? Hate to scrape a 4 bolt block.