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Trans-Am Camaros / Re: Penske Camaro replica
« Last post by Jon Mello on November 26, 2015, 04:06:45 PM »
Yes, Ron has written some books on welding and metal fabrication.
Originality / Re: Detail Picture Request - 69 U26 Underhood Lamp
« Last post by bcmiller on November 26, 2015, 03:41:59 PM »
Correct. Anytime you can avoid dealing with mercury is a good day. Nasty stuff...
General Discussion / Re: Happy Thanksgiving
« Last post by 69 Zee on November 26, 2015, 02:11:37 PM »
Likewise to everyone...Happy Thanksgiving, be safe and enjoy then day !!
General Discussion / Re: Happy Thanksgiving
« Last post by BSMIT59 on November 26, 2015, 02:02:11 PM »
Happy Thanksgiving to all of the great people here on CRG. Checking out the info on this forum has become one of the highlights of my day everyday. Thank you all for your info on these cars that have become so much of our lives.
 Let's all not forget to give thanks to our Military that can't be home with their families today and for keeping our great country free so that we can pursue our life hobby. May God bless them all and keep them safe.
General Discussion / Re: Happy Thanksgiving
« Last post by Boston14 on November 26, 2015, 01:56:45 PM »
Happy Thanksgiving to all. Drive safe if you have to drive.
General Discussion / Re: adjustable fuel gauge module?
« Last post by X33RS on November 26, 2015, 01:42:26 PM »
Yeah prefer to do it myself anymore.  So much so that I was shocked last time I drove through Oregon and got out to pump gas.  Apparently they have some law up there that you aren't allowed to pump your own gas.  I thought I was going to get tackled by the attendant, lol.   He quickly realized I was an out of towner and explained to me I wasn't allowed to do that.   I thought that was all very strange.  Not only do they pump it for you, but you aren't even allowed to touch it yourself.  I don't know if it's still like that or not, that's been a few years since I've been through there.
Trans-Am Camaros / Re: Penske Camaro replica
« Last post by maroman on November 26, 2015, 01:42:04 PM »
I was guessing they were correct, I just don't remember them. Is this the same Ron Fournier that wrote the book on welding and metal fabrication? If it is I would recommend everyone  should read it. 
Mild Modifications / Re: The Hugger goes ZL-1....
« Last post by hgger69 on November 26, 2015, 12:25:47 PM »
The collecting of engine parts continues....
There were two other boxes that arrived with the crank... ;D

The heads were extremely well taken care of for transportation, thatīs good! But it was a real mess to get every little plastic chip out from all small cavitations in the heads, I promise you!  :P

A big part of an engines character depends of the cylinder heads. As you are well aware of an original ZL-1 from 1969 had the heads with die cast number 3946074, aka the #074. These heads are quite common on eBay but often goes for high prices. Itīs strange but if you struggle for the originality they are the way to go and pricing goes in the same direction I guess... ::) Since our effort here is to get something close to original but not a number matching ZL-1 clone so why not go for something more spectacular like a pair of period correct "over the counter" cylinder heads from Chevrolet?

Decision made and the hunt begun...These heads, probably made for racing, has 14011077 as casting number and are often known as the #077-heads. They are not as easy as the #074 ones to find at eBay but if youīre patient you can get some for the right money....and we did!
These ones seems to be in a very good shape as being used parts and also complete with valves and springs.

Both the #074 and the #077 were Chevrolets first heads with open-chambered design. The big difference between these different heads are the design of the exhaust ports. The D-shape, or C-shape, of the #077-head is the major difference. It is said that the #077-heads will get you like 30-40 extra horsepower compare to the #074 ones.....?! :o
Here is a pic where you can see the D-shape clearly:

As mentioned before the #077-heads were "over the counter" and were never standard on any engine from Chevrolet. They were made for racing purpose only. The story is that the special shape of the exhaust port probably was a thing that TRACO, who cooperated with Chevrolet during this period, tested and found out that it worked out great. TRACO got more horsepower out from their engines, maybe due to the heads, than the engineers from Chevrolet and itīs possible that Smokey Yunick got hold of an TRACO Can Am-engine and copied the D-shape ports.

The first series of the #077-heads were made in the mid of the production year 1969 and they didn't come with a cast date number, I've been told. If I look closer at our heads I found some numbers that could be the casting date but I'm not sure how to decode them?
The #077-heads were produced as long as in the 1990:ies....

One of the heads could have been made the 2:ond of October 1974, 1984 or 1994?

...and the other one the 20:th of November 1974, 1984 or 1994?

When ever they were made they really seem to be in an excellent condition. No cracks or welding as I can see. No helicoil inserts and they have never been media blasted or painted either. The valves are stainless and appears to be brand new. The machine work done for the valves must be professionally made, the way it looks. I did a test with red spirit on the valves and they did not leak at all.

The exhaust ports have gotten some small grinding jobs too:

I don't think the light surface rust on the springs will be an issue when the motor is up for assembly but who knows..?

Please fell free to complete the history of these heads or correct me if I have written something wrong!  :)
Originality / Re: Detail Picture Request - 69 U26 Underhood Lamp
« Last post by ZLP955 on November 26, 2015, 09:05:58 AM »
Thanks Bentley, that is awesome detail, exactly what I was looking for. Nice patina too!
Brian, thanks for all that info, much appreciated. Interesting point about the dangers of the original mercury bulb switch; I guess that would likely be a hazard considering I would have to get it shipped to me by air, so am I correct in thinking the type that takes a standard bulb (therefore having the integral switch, not within the bulb) would be safer?
General Discussion / Re: adjustable fuel gauge module?
« Last post by ZLP955 on November 26, 2015, 08:56:39 AM »
Wow, that takes me back. A Shell station in a nearby town has just employed a guy to pump gas for customers. I stopped there recently, and found that after all these years of self-service, I just prefer to do it myself..... Don't want to see the guy get fired, but I felt so uncomfortable with nothing to do!
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