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· Registered
2 Posts
Discussion Starter · #1 ·
I know very little about them so I'm hoping you can tell if it's what you're after through the photos. I don't know car parts very well, so I'm just selling these as-is w/ no returns.

The package they came in says 18SPX CNC. If this is something you're after, please let me know. They are like brand new as far as I can tell, just don't have anything else to include with it - like valves or anything like that. You get the two cylinder heads and that's pretty much it.

Please feel free to inform me of what I have if you know anything about them! I looked at Brodix's catalog and think I found the info for them, but again I'm not sure. I'll include SS of what I think they are listed as on the Brodix website.

Here's a link to info that I THINK pertains to them. 18 X™ Series/18° - Brodix

(Something I'd like to add: I noticed there was some pink markings and I don't know why they're there. Maybe the previous owner had plans to modify them? I don't know but they still look new regardless.)

I'm located in Houston, TEXAS but will ship if buyer covers shipping costs. I can do cash or Paypal.



· More for Less Racer
22,074 Posts
Looks like maybe someone bought a pair, or 2 single, "Blems"(blemished castings) as the box label and contents don't fully match. Maybe gotten "employee direct" out the back door at Brodix, or bought from a speed warehouse like Competition Products or CNC Motorsports

Heads have not been through the cnc porting phase,as ports and chamber walls are still as-cast, there are no valve seats pressed in place, no valve guides either.
they also appear to be a mismatched set, one heads says 221cc, the other says 217cc in the paart number stamped on the head....that is the intake port volume
Typically heads without seats and guides are sold as "porters castings" to someone who intends to hand port them and then finish them out being mismatched isn't a big issue to a port wizard...but to anyone else it's a problem.

Bare matched pair WITH seats and guides installed and valve-jobbed and guide-sized ready to assemble are $1400.....
I think you are asking too much for a mismatched, half raw set.

$500-600 would be all I'd pay, since I'd have to buy seats and guides, have them installed and finish cut, and then I'd have to port them to match each purchase the final assembly parts: valves, springs, seals, shims, retainers, could easily have $1000+ in that work and parts and at a $1000 price point for the castings that puts you into them at $2000+ for a head you can buy finished and ready to go for....
$1975.....and you don't have to do all the work involved.

Direct from Brodix pricing is not the way to go, since you can buy cheaper from their dealers. Brodix doesn't want to sell direct, they would prefer you buy from one of their authorized dealers for best pricing.

CHEVROLET Brodix Cylinder Heads 18 SP X PKG Brodix Cylinder Heads 18 Degree Cylinder Heads | Summit Racing
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