Originally Posted by Custom10
Seems that every time I am on this forum I gain some more knowledge. I would have thought that any 062 casting from 96 on would be the same. So when we are taking L-31 it means from 96-2000 only. After that (2000) a 062 casting would be the mexico head and not really a L31? Thanks F-BIRD
Yes GM moved the V8 L-31 vortec head production from here in St. Catharines and moved it to Mexico right around the time the trucks started getting the New Generation LS type motors.
The apparent difference in the castings has been getting some "press".
Maybe the New GM Corporation will smarten up.
The GM Bowtie stuff seems to be pretty good thou. A lot of the typical required valvetrain upgrades are already done and the Bowtie vortec castings and ports are much better.
I like this head package PN: http://www.shopfbparts.com/servlet/Detail?no=155
Thats a mean vortec head.
Not bad pricing either.