Cam Lift
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
c/n 14011034 is not an OE GM production head.
c/n 14011034 is Bowtie from GMPP.
It probably sold new from GMPP without any springs or valves at all. As said, have the valvetrain checked to see if they'll handle .500"
Those Bowtie heads are intended for certain restricted race classes where a "spec" head is mandatory like nascar LMSC. They're good for what they're intended for ... but in the wider world not so great. Don't spend a great deal on em if for a street car ... $1100 worth of new Brodix IK180 should outperform them on street ... probably a tweaked set of iron vortecs would do as well too.
c/n 14011034 is Bowtie from GMPP.
It probably sold new from GMPP without any springs or valves at all. As said, have the valvetrain checked to see if they'll handle .500"
Those Bowtie heads are intended for certain restricted race classes where a "spec" head is mandatory like nascar LMSC. They're good for what they're intended for ... but in the wider world not so great. Don't spend a great deal on em if for a street car ... $1100 worth of new Brodix IK180 should outperform them on street ... probably a tweaked set of iron vortecs would do as well too.
