074 Heads

[nuch_ss396]

Actually Mike, I have a somewhat associated question.

We all know that these heads are all over ePay because of
their ZL-1 & L-88 heritige. However, I have read numerous
books about building hot rat motors from back in the day and
all of them pretty much trashed these heads for their round
exhaust port configurations and lack of power unless you ran
open headers and super combustion.... How accurate is this?
If true, what explains the crazy prices for '074 heads and
why aren't the '077 heads worth a boat-load more?

Nuch

[427king]

[ QUOTE ]
I have read numerous
books about building hot rat motors from back in the day and
all of them pretty much trashed these heads for their round
exhaust port configurations and lack of power unless you ran
open headers and super combustion.... How accurate is this?
If true, what explains the crazy prices for '074 heads and
why aren't the '077 heads worth a boat-load more?

[/ QUOTE ] Its simple, appearance when the hood is open. The same reason a vintage ZL1 is worth 3 times a yenko ZL1 or a new GM zl1.

[nuch_ss396]

Chuck,

Where a real ZL-1 or L-88 ( one of the 2 - 4 ) are concerned,
I totally agree. However, there are tons of these heads
available from parts counter sales back in the day and all
the remaining ZL-1 wanna-be cars really shouldn't care about
the '074 heads as long as they are aluminum.

So I'm still wondering why the '074 heads are worth so much?

Nuch

[427king]

[ QUOTE ]
So I'm still wondering why the '074 heads are worth so much?


[/ QUOTE ] All 4 casting numbers[392,842,074,077]had thier own external appearances. Why are 67 heads going for tons of money when only 20 L88s were made?? People want cars vintage correct,and appearance correct over performance .