Need head identification please

[NightRiderZ]

Ok so when i bout the 96' LT1 it had a 383, and came with seperate I have a heads that are aluminum... I was hoping you guys could answer my question, are they same as stock or better?? Casting number is #10128374.
All the info i have on the heads is this:

68cc reverse flow, 175 intake ports, 68 cc exhaust ports thats all the info i could find guys...

[mrr23]

according to mortec.com that casting number is a stock head.

http://www.mortec.com/castnum.htm

10128374...92-up...350..........Gen.II LT1, 53cc, angle plug,
aluminum, reverse flow cooling,
175/68cc ports

now, if those heads you have now are ported with larger valves, yada, yada, yada, then they will be better than stock. otherwise, they are stock heads.

[NightRiderZ]

So the stock lt1 heads are Aluminum as well??

[mrr23]

yes.

[NightRiderZ]

Alright man, thanks...my question is, my ported and polished heads would make an estimated hp/tq over the stock non-ported and polished....thanks

[mrr23]

17-20 rwhp