FACTORY COWL HOOD

[ALLZS]

WAS THE FIREWALL STAMPED DIFFERENT ON A MID YEAR 69 CAMARO FROM FLAT HOOD TO COWL HOOD. LOOKING AT A SO CALLED FACTORY COWL HOOD CAR ? http://www.yenko.net/ubbthreads/images/graemlins/confused.gif

[lzdick]

The commonly referred to "cowl hood" or "Super Scoop hood" is the RPO ZL2 SPEICAL DUCTED HOOD offered as optional equipment on the Camaro (I believe April 1, 1969...10,026 produced). The firewall itself was stamped-out the same on all Camaros.

[David C.]

I believe there are a couple dimples above the RH valve cover to locate where the relay was installed, close to the engine ground wire. Look for an extra drilled hole.

[Steve Shauger]

[ QUOTE ]
WAS THE FIREWALL STAMPED DIFFERENT ON A MID YEAR 69 CAMARO FROM FLAT HOOD TO COWL HOOD. LOOKING AT A SO CALLED FACTORY COWL HOOD CAR ? http://www.yenko.net/ubbthreads/images/graemlins/confused.gif

[/ QUOTE ]

The first car produced a ZL2 hood was the late Dec of 68 built ZL1 shipped to Fred Gibb. All SS's and Z28 could have been ordered starting Jan of 69. It was part of COPO 427 car package. This option was rare on Jan and Feb cars, but in later months it became more known and popular. The accelerator linkage accomadates a switch along with a piercing for the wiring harness for the cowl relay/solenoid.

[Stefano]

Factory ZL2 Camaros also had a wire hole stamped just above the main wire harness fuse panel junction box, on the firewall.

[rpoz11]

Funny I never really thought about this before.

Were all Z28's built prior to the ZL2 option all flat hood cars???

And, since the Cowl Hood option was a later release, did the firewall LACK the dimple stamp spots for the relay switch on the early 69 Camaros????

[Lynn]

[ QUOTE ]
Factory ZL2 Camaros also had a wire hole stamped just above the main wire harness fuse panel junction box, on the firewall.

[/ QUOTE ]

The 3/4 inch hole above the fuse panel junction box hole is for the ducted hood wiring. The 1/2 inch hole below is for tach wiring.

Pic:
http://s74.photobucket.com/albums/i279/lynnbilodeau/?action=view&current=fuseblocktachhood.jpg

[Kurt S]

http://www.camaros.org/options.shtml#rs

Yes, all pre-Jan Z's were flat hoods. Most post-Jan Z's were also flat hoods too. http://www.yenko.net/ubbthreads/images/graemlins/smile.gif

[rpoz11]

Ok, well for me, that explains enuff!

But, what about the firewall?

67, 68, & early 69's????

And how do you answer COPO cars delivered to Yenko on that late evening back late December early January?

Did these cars receive the flat or Cowl Hoods and did their firewalls come with the correct Cowl Induction Relay dimples for he relay???

GM had that firewall tooled up.

So what is the consensus on the dimple markings prior to Jan/Feb release times for the Cowl Hood?

[firstgenaddict]

No COPO's were delivered to Yenko in late dec...it was Fred Gibb and they were ZL1's. not iron block L72's.
As Shauger stated before these were the FIRST 2 Production equipped Cowl Hood cars.
I have never really looked as to whether or not there are any dimples etc on an early car... I have an unmolested 10D 69 Z in my garage I will check this evening.

[olredalert]

-----There are documented examples of cowl hood delivered 69 Camaros with the cowl harness hole in the firewall not drilled in the correct place. The hole isnt far off, but its not where the dimple is. Do we chalk it up to "hole driller indifference??? I would think the hole was drilled manually and not punched, but I dont know.......Bill S

[black69]

if you are looking at a car and pondering if its an original cowl car, see if it has its matching numbers hood. It should have a number on it. It could make you feel more comfortable. There were not that many cowl hooded cars when you take out the copo production and the pace car totals out of the 10K hoods made. No docs will be a tough call. A correct date (week) matched hood would really help.

Here is a thread to decifer how to find the number:

http://www.camaros.org/forum/index.php?topic=3181.0

[rpoz11]

[ QUOTE ]
No COPO's were delivered to Yenko in late dec...it was Fred Gibb and they were ZL1's.

[/ QUOTE ]

I agree, I misstated that.
Thanx!!!
http://www.yenko.net/ubbthreads/images/graemlins/beers.gif

[Lynn]

[ QUOTE ]
-----There are documented examples of cowl hood delivered 69 Camaros with the cowl harness hole in the firewall not drilled in the correct place. The hole isnt far off, but its not where the dimple is. Do we chalk it up to "hole driller indifference??? I would think the hole was drilled manually and not punched, but I dont know.......Bill S

[/ QUOTE ]

I believe you are correct Bill. Both of the referenced holes on the firewall pic I posted have small burrs on the inside of the firewall left from the drill bits. None of the punched holes (for instance the four around the brake booster hole) have burrs. I know it to be a factory ducted hood car.

I have seen several slight variations in the placement of each of these holes. The assy manual shows where to drill, but they didn't all get drilled exactly as planned in the manual. Imagine that.