[a1supersport]

Worth it or not? Was thinking maybe...not. If none of the threads were stripped-out, straight not warped, no cracks/casting flaws...maybe yes?
http://honolulu.craigslist.org/oah/pts/1802366523.html

[ericnova72]

You can get modern aluminum bare castings for the same or slightly more money, and they will flat blow away the old Chevy Aluminum BBC head in power, and durability. The ZL-1 head is also known to be highly crack prone. They may not be cracked now, but how long will they last until they do, after you put them into service??

I wouldn't even consider them unless I was restoring a ZL-1 Camaro and the date code on them was correct.

The ZL-1 head is nothing more than the Rectangle Port BBC Iron head cast in aluminum, only differences are the round exhaust port(which doesn't help at all) and the smaller 1.72 exhaust valve. Nothing special about them except the aluminum material and the fact they were for the all-aluminum ZL-1 engine.

[starnest]

Absolutely NOT!

Unless you are building/restoring a ZL-1 engine for a ZL-1 Camaro.

Even if you were building a Clone, Tribute, or Replication - your money would be better spent on the new modern aluminum heads that are available. You would have more value because of the better performance and reliability the modern designs provide.

[lmsport]

More than 10 years ago, i sold a pair for $3000 to a guy that had a ZL-1 engine but no car. The restoration guys are a tough group to predict. For perf use, there are many better aftermarket heads.

[prostreet6t9]

I see those heads sell from 3k to 4k complete. Someone might be able to make a little money off those if the heads are in good shape. I would pay to have them checked for cracks before I bought them if it was me.

[a1supersport]

Yeah I was thinking it would be worth something to someone, looking for date/numbers-matching heads. Unusual to see it on C-list...of all places. Been seeing things on there that I thought I'd never see. I guess times are hard.

[prostreet6t9]

Originally Posted by a1supersport

Yeah I was thinking it would be worth something to someone, looking for date/numbers-matching heads. Unusual to see it on C-list...of all places. Been seeing things on there that I thought I'd never see. I guess times are hard.

I'm the same way with C/L. I always look at it with caution. My first thought is wondering if they're a little "warm" or all messed up the the seller is hoping that someone will buy them without having them checked.

There's still a pretty big crowd that is buying up the ZL1 stuff.