You know when your fabricating the battery box, shits for real…
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Great posts, Raybob! It’s a ton of work, but you’re making good progress over the years. It’s nice that you’ve resurrected the body versus junking it for a rust-free one.
Of note, with the forward cage bars that go through the firewall and tie into the subframe, the car won’t be eligible for A Sedan like you had mentioned to me at RAKC. The 1972 A Sedan and Production rules prohibit that bar, so the car will likely have to run in 1981 GT-1 like my Barracuda. To me, the additional structural support and protection is worth it, but it may go against your hope of building it to the A Sedan spec.
Keep the posts coming!
Thanks Justin,
BTW thanks for spending your time with me on Sunday. It was great meeting you, your crew and seeing that Bad fish.
I think your right on the forward bars. We were legal to do it in SCCA AS on third gen Camaros back in the early 2000’s.
I guess I’m really building a Trans Am clone. I’ll take another look at the 72 GCR.
My battery box location would be illegal for T/A but legal for AS. Weird…
I’d still like the car classified as AS 2 3 4.
I’m also gonna take a look at where SVRA would class me.
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Thats when I realized without the Impala 12bolt diff it was gonna get busy and crowded in the rear wheel wells.
It was when I saw Ray Evernham restoring a 74 IROC car that I knew I had some inner wheel well modification needed.
That should keep me from having to do the rear quater panel flares.
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Changing out the old posi unit with a different ring & pinion and Eaton posi in the 1970 GM 12 bolt rear diff.
And test fit JL8 rear disc bracket. This Camaro will have the same calipers as a 63-81 Corvette.
Theres ONE WAY to get 3" exhaust out of these 2nd Gen F bodies. I took the plan from the Owens Corning 70 Camaro restoration.
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As of yesterday its time for exhaust pipe work.
All day for Passenger side. Hopefully the Driver side will go
Faster.
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Nice progress Raybob!
With the rear disc brakes, you’ll be moving into the land of A/Sedan-3 since that class allows for unrestricted brakes versus the more restrictive options of A/S, A/S-1 (drum rear), and A/S-2 (rear must be in factory location, for which there was never a factory position for disc brakes).
What led to the choice of 3" exhaust? Did you do dyno testing to land on that diameter? I’d expect a 302’s torque curve to benefit from 2.5" over 3", so you have my curiosity. Slick recessing it into the floor pan, although I’m not sure my feet would like it. 
Thanks Justin,
All 1st gen and 2nd gen F bodies were available with RPO (Regular Production Option) JL8 4 wheel disc brakes. Most people didnt check that box on the order form. but people who were going road racing did. As a matter of fact I think by 75, 76 or 77 if you ordered a Chicken T/A with WS6 that package came with rear Discs. The greatest benefit to racing F bodies was always being able to share parts from the Corvette boys down the Hall.
As for the exhaust most of the factory teams ran 3" from header collector to side exit with a crossover “H” pipe behind the tranny. My engine builder concured so we’ll see what the HP numbers are when we go to the Dyno.
The only hot spot in the floor I’m worried about is right under the gas peddle.
I still have right shoes with melted heals from that heat. I reckon I’ll build a false floor with aluminum diamond plate. But the 45° Exhaust duct is actually in the rear passenger foot well. I might put some of that foil backed heat mat on that 
.
BTW, I’m totally OK with AS 4 5 or 6 whatever the powers that be decide. I’m having fun building my car based on how I would have built it back in 1970 to race in AS and possibly maybe a T/A race for fun. This weekend I’ll do the exhaust tunnel onthe Drivers side and start the seat fabrication.
Thanks for reading…
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Hey @Raybob9289, all the Chevy books I have say that the JL8 rear disc package was never offered by the factory on second-gen Camaros. It was offered on 1969 first-gen, but rear discs were not offered again until third-generation? That’ll be a distinction important to the RMVR/CVAR diehard A/S, A/S-1, and A/S-2 crowd, but, as you pointed out, if you aren’t particular on the class, go for it!
I wager that you could homologated the second-gen rear discs from either first-gen or Camaros, however, since that’s how the Chaparrals got them into Trans-Am. I’d collect that homologation evidence and present it to Eligibility when the time comes since you might have a case for A/S there.
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