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Pretty sure I know the answer to this but I wanted to get some more opinions before I write it off as scrap. Were buying a new gm long block but it would be nice to be able to recoup some of that cost
This is the product of a broken stock valve spring in my girlfriends ‘15 ss with just over 150k on the clock. She said from the time she heard a strange noise to the time she cut the car off was about 15 seconds
X3!......And people still wonder why some of us run dual springs when a single spring "could" meet the cams requirements. I realize GM used single spring, so not your choice. I once broke an outer spring. 300 miles on a fresh 427. Left a stop sign, only 1 mile from home, under light throttle. I was leaving for work at 4:45 A.M. At approximately 2,000 rpm as the 4L60E shifted to second gear, all of a sudden RAP, RAP, RAP, then no more noise. I shut it down. Saved the motor!!! I restarted the engine, and sounded fine. Drove it 1 mile back home (I know, I shouldn't have, but I got lucky!) with no more noises. Pulled a valve cover that afternoon, and found the outer spring in 3 pieces, with 2 of them lodged in the heads oil drain back holes!! Sorry to hear of your loss......
X3!......And people still wonder why some of us run dual springs when a single spring "could" meet the cams requirements. I realize GM used single spring, so not your choice. I once broke an outer spring. 300 miles on a fresh 427. Left a stop sign, only 1 mile from home, under light throttle. I was leaving for work at 4:45 A.M. At approximately 2,000 rpm as the 4L60E shifted to second gear, all of a sudden RAP, RAP, RAP, then no more noise. I shut it down. Saved the motor!!! I restarted the engine, and sounded fine. Drove it 1 mile back home (I know, I shouldn't have, but I got lucky!) with no more noises. Pulled a valve cover that afternoon, and found the outer spring in 3 pieces, with 2 of them lodged in the heads oil drain back holes!! Sorry to hear of your loss......
that’s exactly what I told her. I remember when I was a kid way back in 2000-2001, my dad had a 99 z28 with a baby cam and dual springs. 2 seperate occasions it broke multiple springs and he drove it way farther than I’d like to admit and on both occasions the inner spring saved him from catastrophic failure
I had a spring on my Formula's original engine break, luckily it was at idle. The only thing holding the valve up was a flat wound damper. I've ran dual springs in any performance build I've done ever since.
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Is this block scrap? 
