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111304 Posts in 12818 Topics by 4913 Members
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3076  Model Specific Discussions / Trans-Am Camaros / Re: Scattershields on: May 05, 2011, 08:57:08 PM
1967 Lakewood ad for Camaro. Oddly, the photo is not a Camaro scattershield. Looks like one for a Chevy II/Nova.

3077  Model Specific Discussions / Trans-Am Camaros / Re: Wheels used on Trans-Am Camaros on: May 05, 2011, 08:51:49 PM
I did not have any luck finding a Trans-Am Camaro with Cragars on it but here are a couple of photos of Ron Grable's
Dart, which did use them. Also, the Bob Barker '67 Mustang used them.

3078  Model Specific Discussions / Trans-Am Camaros / Re: Street weight vs racing weight on: May 05, 2011, 05:45:47 PM
I guess you could say some people/teams scrutinized the rule book a little more carefully than others.  Cheesy
3079  Model Specific Discussions / Trans-Am Camaros / Re: Engine photos on: May 05, 2011, 05:42:35 PM
Hey Bruce, thanks for posting the photo of the Titus engine. I'm kind of curious how the TG team was able to use that manifold and carburetor set-up. Was that something Pontiac had homologated on the proper SCCA forms or did the tech inspectors "look the other way" for that particular race? I assume they wanted to run this for a top-end boost and see how it performed against the Boss 302, which was also biased more toward top-end power rather than mid-range. Have you spoken with Dave Billes about this set-up?
3080  Model Specific Discussions / Trans-Am Camaros / Re: Street weight vs racing weight on: May 05, 2011, 11:04:33 AM
The weight of a street Z is going to vary depending on year and options. A guess for a '69 street Z would be around 3150-3200lbs.  In the SCCA rule book, the minimum weight for the 1968 racing year for all pony cars was set at 2800lbs, less fuel and driver. For the 1969 racing year, it was bumped up to a minimum weight of 2900lbs, less fuel and driver. For the years 1970-1972, the minimum legal weight was changed to 3200lbs with fuel or 3400lbs with fuel and driver. The 1967 racing year did not give a specific minimum weight but was supposed to be 350lbs less than the "homologated" weight. The homologated weight is what the factory told the SCCA what a typical Camaro (or Mustang, Cougar, etc...) weighed in stock form. Of course, they were not required to prove what that weight was so they all lied and came up with lighter than typical weights. A '67 car could have and probably would have raced under the 2800lb minimum established for the '68 season. The establishment of a standard minimum weight for all Trans-Am cars came as a result of what happened the previous year. Does that answer your question?
3081  Model Specific Discussions / Trans-Am Camaros / Re: Rear axle on: May 04, 2011, 10:53:15 AM
Chevrolet Engineering was well aware of the limits of their rear axle spring perches in performance applications.
Below is the Engineering Service Letter which shows what they recommended as a fix. Always use u-bolts to
help keep the axle firmly attached to the spring, preferably two per side on a race car. Increasing the diameter
of the u-bolts is a good idea too.

3082  Model Specific Discussions / Trans-Am Camaros / Re: Recommended Reading on: May 04, 2011, 07:21:15 AM
Mike,  Dan has got it finished and has submitted it to the editor so that part's done. Barring unforseen circumstances, it should be out at the time he indicated. Dan's got a passion for the cars and their history. I'm sure it will be well done and I am looking forward to it.
3083  Model Specific Discussions / Trans-Am Camaros / Re: Engine photos on: May 03, 2011, 09:56:04 PM
Guldstrand's car was not a Z-28, it was an SS350 pulled off the lot at Dana Chevrolet and made into
a pseudo Z-28 with the replacement of the 350 with a Traco-built 302, a flat hood and a pair of Z
stripes. It was a manual disc brake car originally and Guldstrand preferred that over the power
assisted brakes.

I'm seeing the outline of a curved piece of metal under the duct tape on the upper radiator hose of
Guldstrand's car. Unfortunately the Penske engine compartment photo is a little too grainy to fully
see what else may be on the upper hose besides duct tape but that's as good an image as I have.
3084  Model Specific Discussions / Trans-Am Camaros / Re: Engine photos on: May 03, 2011, 02:11:54 PM
Photo of the Penske Camaro's engine compartment, taken at Marlboro, MD, August 12, 1967.
This race was the first victory for the Camaro on the Trans-Am circuit. Mark Donohue and Craig
Fisher co-drove the car for this race. Notice the Bill Thomas/Douglass headers, painted yellow.

Photo by Andrew Keller
3085  Model Specific Discussions / Trans-Am Camaros / Re: Original T/A racing photographs, late 60's & early 70's on: May 03, 2011, 02:00:09 PM
Mark Donohue in the #6 and Bob Stevens in the #19 at the Kent (Washington) Trans-Am, October 6, 1968.

3086  Model Specific Discussions / Trans-Am Camaros / Re: Recommended Reading on: May 03, 2011, 08:10:23 AM
Dan Lipetz of the Historic Trans-Am race group tells me his new book about the Trans-Am series is due to come out this fall, possibly as early as late August. More good reading to look forward to.
3087  Model Specific Discussions / Trans-Am Camaros / Re: Early Traco Water Pump Pulley on: May 02, 2011, 06:02:13 PM
Wow, Chad. That is a seriously cool piece with several details that most people would never catch. Thanks a lot for posting it.
3088  Model Specific Discussions / Trans-Am Camaros / Rear axle on: May 02, 2011, 02:43:21 PM
Here's an article from 1968 showing one method of how they beefed up rear spring perches on the axle back then.
No matter if you're road racing or drag racing, this is a wise thing to do because the factory welds in this area are
only suitable for going back and forth to the grocery store.

3089  Model Specific Discussions / Trans-Am Camaros / Engine photos on: May 02, 2011, 02:36:35 PM
Anybody have some good Trans-Am engine compartment photos they would like to post?

Here's one of the Dick Guldstrand Dana-sponsored Camaro. Notice the spacers under the
thermostat housing, possibly to elevate the upper radiator hose away from the fan belt.
Click here for comments about the water pump pulley.

3090  Model Specific Discussions / Trans-Am Camaros / Re: Original T/A racing photographs, late 60's & early 70's on: May 02, 2011, 12:30:46 PM
Thanks, Mike.

Here's a photo of the John Putnam Camaro in the '70-'71 paint scheme. John was in the San Francisco Region
of the SCCA at this time but the car ran in the '71 Riverside Trans-Am, the '72 Bryar Trans-Am and the '72 Road
America Trans-Am, as well as numerous IMSA and A-Sedan races before John sold it at the end of 1973.

Photo: Dave Doyal Collection
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