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2611  Model Specific Discussions / Trans-Am Camaros / Re: Firebird and the Trans-Am series on: September 14, 2011, 10:11:54 PM
Bruce's rear axle tube is not a Camaro piece. Looks to be Pontiac but I'm not sure if it's Firebird or borrowed from something else.

Below are the JL8 bracket and drum brake backing shield. On the JL8 bracket, the distance between the upper pair of holes is 3-3/8" or approximately 86mm.
The bottom pair of holes on the JL8 bracket is the same distance across (3 3/8").
On the Camaro drum brake backing plate, the distance between the upper pair of holes is 3-3/32" or approximately 78.5mm. The lower pair of holes are
closer together and measure 2-21/32" or approximately 67.5mm.

I'm going to take a guess and say Bruce's flange hole pattern is neither one of those and that might be why they had to fabricate their own caliper bracket.
Bruce, if you ever get a chance to measure that bolt pattern, let us know what you find out.
2612  Camaro Research Group Discussion / Originality / Re: 67/8 Cowl Hoods, Factory? on: September 13, 2011, 10:22:27 PM
For the sake of a complete answer, at the September 1, 1968 Can-Am, Sterling Moss drove the Pete Estes '68 Z/28 convertible (1 of 1 made) as the pace car and it had a cowl induction hood on it. It may not have been installed on the assembly line (there is no definitive proof either way) but it was installed on the car by GM, probably at the Tech Center. This is many months before any '69 got it.
2613  Model Specific Discussions / Trans-Am Camaros / Re: Firebird and the Trans-Am series on: September 13, 2011, 04:57:52 PM
Are you asking about whether or not the axle tube tapers down where it meets the 4-bolt flange at the outer end?
2614  Model Specific Discussions / Trans-Am Camaros / Re: Firebird and the Trans-Am series on: September 12, 2011, 05:22:23 PM
Great photos, Bruce. Thanks for posting those. Here is the GM bracket for comparison's sake.

2615  Model Specific Discussions / Trans-Am Camaros / Re: "Inside the Cars of the Trans-Am" and other articles on: September 12, 2011, 04:13:37 PM
Here's a decent article on the suspension and handling of the '68 Trans-Am cars from my November '68 issue of Car Life magazine.

2616  Model Specific Discussions / Trans-Am Camaros / Re: 1968 Bryar Trans-Am photos on: September 12, 2011, 03:44:13 PM
Another article on the '68 Bryar Trans-Am. This one is from my November '68 issue of Car Life magazine.

2617  Model Specific Discussions / Trans-Am Camaros / Re: Firebird and the Trans-Am series on: September 11, 2011, 06:41:31 PM
It's always a bit fun to post something people have not seen before. I'm glad you guys enjoyed that.

As for pictures or info on the Pontiac rear axle, Bruce302 owns one of these '69 Titus Firebirds with most of the original pieces intact. Bruce told me that a website with good knowledge of the BOP axles can be found at

Some of it may be conflicting, but this page has specs on the axle that matches his. Bruce states..."I have a 10 bolt rear cover, 12 bolt ring gear bolts, 31 spline axles, and it seems the Olds unit was the primary user of these parts. That is why [Firebird racer] Frank Eggers used the type O axle. Because the type of car these came in was not as regularly used as a serious performance car, the rear end has been neglected. Few have known that there were rear ends with 10 bolt covers [that] had 12 bolt internals. Here is another exchange on the rear ends. "

                    Ring Gear Diameter                    8.875
                    Ring Gear Bolts                         12  (Inspection Cover bolts 10)
                    Ring Gear Bolt Size                    7/16 Left Hand Thread
                    Axle Spline                                31  bolt in
                    Pinion Spline                              29
                    Pinion Diameter                         1.625
                    Axle Shaft Diameter                   1.40
                    Supported Cars:   
                    Car                                        Year
                    Bonneville                                65-70
                    Grand Prix                               65-68
                    Catalina                                   65-70
                    Executive                                 65-70
                    Rebuild Kit Includes:   
                    Part                                        Part Number
                    Carrier Bearing                          LM603049
                    Carrier Bearing (Race)               LM603012
                    Inner Pinion Bearing                   M88048
                    Inner Pinion Bearing (Race)        M88010
                    Outer Pinion Bearing                  M802048
                    Outer Pinion Bearing (Race)        M802011
                    Pinion Seal                                2043
                    Mega Axle Bearing Seal Kit:
                    Axle Bearing (C-Clip)                  5707
                    Axle Seal (c-clip)                        8660S

I can add that Bruce's rear caliper brackets were not the same as those used by the Camaro teams (Corvette right-rear brackets). His brackets are different and, if I remember correctly, are a completely machined piece rather than a casting with some small machined areas. I hope this is helpful.
2618  Model Specific Discussions / Trans-Am Camaros / Re: Sunoco fueling rig on: September 11, 2011, 10:57:32 AM
Yes, when you are putting 22+ gallons of fuel into a car in 3 or 4 seconds that would definitely be considered dumping and not pouring.  Grin
2619  Model Specific Discussions / Trans-Am Camaros / Re: Recommended Reading on: September 11, 2011, 10:13:07 AM
Thanks for the further recommendations, Mike. I have not seen that last book before but like you I did get a lot of enjoyment out of the interviews found in Fast Chevys.

The update from Dan Lipetz as of this morning is the editing for the book by David Bull was not completed when it was originally scheduled to be. Then he (David Bull) was in a terrible motor cycle accident in late July.  Dan has not spoken with him since and it is unclear what his current condition is.  So, no book yet!

I had not heard about David Bull's accident and wish him well.
2620  Model Specific Discussions / Trans-Am Camaros / Re: 1969 Mid-Ohio Trans-Am photos on: September 11, 2011, 01:01:51 AM
There's a nice thread by "Javelin GT" on this AMC forum showing some nice photos midway down of some Javelins from the '69 Wolverine Trans-Am.

This particular photo posted by Javelin GT shows the hood up and reveals the taller manifold and aircleaner used by the Javelin team
at that particular race. It is obvious that the blistered hood is necessary for clearance.

Also, there is a nice short interview with Ronnie Kaplan on where he describes the special engine used by the Javelin team
to start the '69 season. This special engine based on the 343 block rather than the 290 and with a lower deck height, taller manifold,
dominator carbs, etc is the reason why they were so fast at that Michigan race. Sadly for the AMC team, somebody didn't properly
homolgate that engine (fill out the proper paperwork) so it couldn't be used for the rest of the season.

2621  Model Specific Discussions / Trans-Am Camaros / Re: Firebird and the Trans-Am series on: September 10, 2011, 11:48:53 PM
Here's another article on the Jerry Titus Firebirds. This one is from my May '69 issue of Motorcade magazine.

2622  Model Specific Discussions / Trans-Am Camaros / Re: Ideas to share concerning 1:18 '67-'69 GMP Penske Donohue Camaros. on: September 09, 2011, 11:59:26 PM
I was aware that you were wanting to replicate the things inside the trunk but somehow it did not register how the topside of a particular chassis is not typically seen. Thus, it is poorly defined or just plain inaccurate. You've got your work cut out for you!

I did find my 2-car Hot Wheels Trans-Am pack. Pony Wars was the name of the series, which I assume they no longer make.
2623  Model Specific Discussions / Trans-Am Camaros / Re: 1969 Mid-Ohio Trans-Am photos on: September 09, 2011, 10:50:02 PM
I actually wasn't sure if the '69 Javelins used the Dominator carbs or not. I don't think I have seen an engine compartment shot that year with no air cleaner in place. If you have a nice Javelin engine shot showing the Dominators, please post it for us. It is really hard to say what the definitive problem for the Javelins was in '69. They certainly did not have the same sort of year they had in '68. Nor, as you have noted, did they have the same drivers. If they had the stout 480hp as claimed, it sure didn't seem to translate to good qualifying times. There are also some races where one or both cars ran well. John Martin's car at this Mid-Ohio event was running very well until it broke. I don't think Ron Grable, John Martin, Lothar Motschenbacher or Jerry Grant were bad drivers but Revson and Follmer were better. Kaplan built a pretty strong engine in '69 but it did not seem to hold together like the Traco-built ones the year before. I think the bottomline is that Chevy, Ford and even Pontiac all seemed to step up their game and get better in '69 and the Javelins unfortunately did not.

Can you tell me what the reasoning was behind the '69 bulged hood? It looked like the aircleaner that year would have still fit under the stock "flat" hood.
2624  Model Specific Discussions / Trans-Am Camaros / Re: Trans-Am Camaro chassis preparation on: September 08, 2011, 09:50:17 PM
Scott, In that first book there are some pages that have some illustrations of modifications that should be done to an axle housing (adding a panhard rod bracket, modifying a full size passenger car axle for use in a Camaro, beefing up spring perch welds, etc) and there is also a page which shows the instructions for a rear sway bar on a '67 Camaro. Beyond those, there aren't really illustrations showing the full rear suspension of a '69 Camaro.
2625  Model Specific Discussions / Trans-Am Camaros / Re: Wheels used on Trans-Am Camaros on: September 08, 2011, 08:04:30 AM
Ron and I looked at that Penske wheel image a little more and it does seem like it probably does say the same thing ["C4 15114 BSM" on the small circular pad] as the one I took at the Sonoma Historics earlier this year (seen below).

I guess I will have to look at more Minilites as I run across them to see if it might be a standard stamping regardless of wheel diameter, bolt pattern diameter, etc.
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