SS69LS1

iTrader: (108)

Pulled apart a 99 LS1 to sell the short block. On the end of the cam there is Y 1 stapmed on it. No other part numbers or anything like I have seen on other stock LS1 cams. Could this be aftermaket? Figured someone might know. Scott

NemeSS

iTrader: (127)

does it look like it has a bar code looking emblem on it, more like a cluster of squares, i have removed cams stamped with a y or a b on the rear of along with the last 4 digits of part#.
but u never know

KCFormula

iTrader: (4)

MTI makes a "Y1" cam. But its pretty big and you would know if it was aftermarket.

SS69LS1

iTrader: (108)

There are no other markings on it other than a large Y and 1 on the back end of the cam. The car had a lot of other performance bolt ons, but no headers & stock heads. The springs were not dual, but sold the heads a while back & never paid attention to the springs. MTI was who I was thinking of. I have one of their C 2 cams. Scott

92zcamaroperson

iTrader: (18)

MTI's y1 cam is a monster. it would need duals