ZL1 Heads
 

My race car has a set of modified ZL1 heads. I had them heavily ported, extra bolt holes filled, 2.25"/1.90" valves installed. part #3946074. I was curious on whether they were worth selling and just buying another set of heads for my car.

I have no idea if these heads are worth anything after being such extensively modified.

Re: ZL1 Heads
 

another pic

Re: ZL1 Heads
 

last pic

Re: ZL1 Heads
 

I have to correct something, the heads were modified before I bought the car. My friend Keith who built the car, found these heads about 10 years ago. He sent them to his friend's machine shop and had them modified.

He told me they were rare heads, but I thought they were the more common L89 heads. when I was reassembling the engine I wrote down the part # and called Mallon Chevrolet to look up the #'s. Talk about wood when they told me what I had. But I'm afraid that they are worthless because of what has been done to them. I want to keep them because of how excellent they flow now.

I am just curious if they are still worth anything?

Re: ZL1 Heads
 

Probably not worth much as a collector item. Cool car.

Re: ZL1 Heads
 

-------Yup,,,Cool car! Its nice that you went on that diet in order to work under the car. So much cheaper than buying a jack!........Bill S

Re: ZL1 Heads
 

I'd take L89 heads over ZL1 heads anyday.


Jason

Re: ZL1 Heads
 

The '074 heads are quite common these days on eBay. I see
them in unmodified condition often, so I would say that
your heads are going to be difficult to sell in their
highly modified condition. But then, you just never know...
Just for your information, the 3919842 heads were the L/89
heads of most prevalence.

I believe that the '074 heads might have been used in L/89
applications in the early 1970's ( possibly LS-6 ), but I
am not sure about that. Others may know for sure.

Steve

Re: ZL1 Heads
 

I guess I'll keep them then.

If only I owned a ZL1 Camaro, these heads would be great for F.A.S.T. racing. https://www.yenko.net/ubbthreads/imag...ins/3gears.gif

http://i8.photobucket.com/albums/a40/toro66/dancing.gif

Re: ZL1 Heads
 

Hey, my poor old hemi has too many bowties to worry about in 06' already!