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2401  Model Specific Discussions / Trans-Am Camaros / Re: Original T/A racing photographs, late 60's & early 70's on: October 01, 2011, 12:09:22 PM
Mark Donohue in the #15 car at the '68 Sebring Trans-Am.

2402  Model Specific Discussions / Trans-Am Camaros / Re: Dyno sheets from the era on: October 01, 2011, 12:02:02 PM
Here's a dyno test from Febuary 3, 1967. Another test of a 302 with the 0-302190 experimental camshaft.
It looks like milling the heads to increase compression, blocking the heat crossover passage, changing the
valve springs, and porting the heads and intake increased both horsepower and torque.

2403  Model Specific Discussions / Trans-Am Camaros / Re: "Inside the Cars of the Trans-Am" and other articles on: October 01, 2011, 11:38:36 AM
From the April 1968 issue of "Sports Car", the national publication of the SCCA.

2404  Model Specific Discussions / Trans-Am Camaros / Dyno sheets from the era on: October 01, 2011, 01:15:56 AM
Here is a dyno test run by former GM engineer and Trans-Am racer Jerry Thompson back on 2-13-67. It was a test of two experimental
camshafts in a 302 engine. The first cam, p/n 0-261898, had .495" lift on the intake and .465" on the exhaust. The second cam, p/n
0-302190, also has .495" lift on the intake but a slightly higher lift of .475" on the exhaust. Unfortunately, we don't have any of the
other cam specs but these seem to be in the vicinity of what became known as the first "off-road" camshaft, released to the public in
1968 as p/n 3927140. Interestingly, the first cam with the slightly lower exhaust valve lift yields modestly higher torque and horsepower
readings. The chart paper does not show readings beyond 6,850 rpm and, as such, the second cam may close the gap and/or surpass the
other in the 7,000-7,2000 rpm range.

2405  Model Specific Discussions / Trans-Am Camaros / Re: Old Bits That Still Work - Chevy 12-Bolt Rear End on: October 01, 2011, 12:52:58 AM
Thanks, Chad. I appreciate you sharing your thoughts. For racers who think the 12-bolt is not a strong enough piece to race with, that is a fallacy. The Ford 9" is a very strong unit and does allow easier gear changes however, I don't believe there are vintage racing guys changing ratios from one race to another. Also, I hear the Ford 9" has slightly more parasitic horsepower loss than than a 12-bolt.

There is precedence for guys running Ford 9" rear axles in Camaros and there is even one that I know of that used a Chrysler 8-3/4" rear axle. That is because of a rule change for the 1970 season that allowed racers to use rear axles from rival manufacturers. Why the SCCA felt they needed to make this change, I don't know, but they did. With that being said, nothing but a 12-bolt rear axle was used in a Camaro in the 1967-1969 years and that includes the Penske cars. Also, the vast majority of Camaros running in Trans-Am up through the "classic era" cut-off year of 1972 continued to utilize the GM 12-bolt.
2406  Model Specific Discussions / Trans-Am Camaros / Re: Trans Am racing pace car pics...are there any? on: October 01, 2011, 12:37:30 AM
Glad to hear you are finding some things to help you out. Here is a shot of the '68 Daytona 24hr pace car (SS396) with actor James Garner driving and Nascar boss Bill France in the passenger seat. In 1968, the Daytona 24hr race was part of the Trans-Am race schedule. The upper body color is red, if I remember correctly, and the car does have a rear spoiler (although it is cut off in this photo). This car still exists.

2407  Model Specific Discussions / Trans-Am Camaros / Re: TRACO Chrome Small Block Chevy Valve Cover Pictures on: September 29, 2011, 09:32:26 PM
Mr. "Sixteen Grand Sedan #56" pointed out an ebay auction to me for an NOS painted version of these valve covers. The great part is it has a part number for us to reference.

The GM parts book indicated it is for...
64-66 Chevelle 327 (exc Special High Performance) Left or Right
65-66 Nova 327 (exc Special High Performance) Left or Right

2408  Model Specific Discussions / Trans-Am Camaros / Re: Old Bits That Still Work - Muncie Transmissions on: September 28, 2011, 11:16:59 PM
Don't worry, Chad. I wasn't going to beat you up too bad over that.  Grin

I do agree that the Muncie is a great choice in a vintage race car. You are not the only Camaro guy opting to run one but there are others who, for whatever reason, choose not to. There are many Camaros running Ford 9" rear ends and also guys who are successfully running with a 12-bolt (including yourself). Let me hear your thoughts on the 12-bolt when you have an opportunity. I really did not enjoy seeing the '69 Penske car with a 9" under it. It does not suit the history of the car.
2409  Model Specific Discussions / Trans-Am Camaros / Re: TRACO Chrome Small Block Chevy Valve Cover Pictures on: September 28, 2011, 08:28:49 AM
Great detective work, Chad. Thanks for continuing to follow up on this subject. I suspect that the valve cover usage was '67 and earlier GMC V8s, not just limited to the year 1967 itself.
2410  Model Specific Discussions / Trans-Am Camaros / Re: 1969 Wolverine Trans-Am photos on: September 27, 2011, 01:38:35 PM
I would be very interested in seeing the photos of the Jim Paschal (pronounced like rascal) Javelin that you mention. There definitely were cars that raced in both the Trans-Am and Nascar GT series but that was usually just for the events at the Daytona Speedway such as the Paul Revere 250 and the Citrus 250.
2411  Model Specific Discussions / Trans-Am Camaros / Re: YouTube (or other) videos of early Trans-Am racing on: September 21, 2011, 07:19:43 AM

I'm not sure if this one has been posted yet but I found it today looking through many videos on youtube.  Some of the sound has been dubbed over and it looks like they sped up the film at certain points but its pretty good footage nonetheless of the 1970 Lime Rock race.
2412  Model Specific Discussions / Trans-Am Camaros / Re: 1969 Wolverine Trans-Am photos on: September 21, 2011, 07:15:50 AM
Don White was the an official AMC driver in Nascar's version of Trans-Am, which was called Nascar GT and later Nascar Grand American. John Martin also drove in Nascar GT with a Javelin and used car #4. Possibly the same #4 that was run in Trans-Am. I don't know for sure. Seems like Jim Pascal was the most successful Javelin guy in Nascar GT in 1969 but I don't know if his car was prepared by Ronnie Kaplan or not. I'm thinking it was not.
2413  Model Specific Discussions / Trans-Am Camaros / Re: 1969 TRANS AM FILM on: September 20, 2011, 10:43:22 PM
Very cool, Tim. Thanks for posting that. I'd seen some parts of it before but not all of it. Lots of good Riverside footage, but other places as well. I wish there was more!
2414  Model Specific Discussions / Trans-Am Camaros / Re: Sunoco fueling rig on: September 20, 2011, 10:32:26 PM
This is the best I can do right now. Maybe next week I can find something else for you. This is the gas filler on Don Lee's '68 Penske car. The '69 Penske cars early that season used this style of filler lid (and filler neck, for that matter) although it was positioned a little more rearward than shown here and the part that is painted black on Don's lid was stainless (silver) on the '69 car. I hope that helps.

2415  Model Specific Discussions / Trans-Am Camaros / Re: Marshall Robbins - Carl Shafer on: September 20, 2011, 01:55:28 PM
Well... I've got a lot of old magazines, which I guess I'm glad I held on to because I'm getting good use out of them now.
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