[74 SD455 Formula]

There were fewer NON-A/C Auto's made than there were stick car's. I.E. look at the break down of the 73 SD Formula's. 10 Stick cars and 8 non A/C auto's that year. My 74 Formula is a NON-A/C Auto.

[superdutybob]

I haven't seen the numbers but I would say that doesn't hold true for the T/As in 73 and 74.

[johnta1]

SD Birds in Registry:
(may not be representative since not all in there)

1973 THM400 with AC - 86
1973 THM400 w/out AC - 35

1973 Manual with AC - 01
1973 Manual w/out AC - 43


1974 Manual with AC - 04
1974 Manual w/out AC - 63

1974 THM400 w/out AC - 80
1974 THM400 with AC - 179





I'd say the SD was not a high RPM engine like the RA IV is why they had AC available.

The RA IV would have gears like 3.90 or 4.33, while the SD had a 3.08 or 3.42 gear.

[bluebird455]

Since "officially" you could not order a Manual SD with a/c, I wonder how many were actually installed at the dealer, or later by the owner?
I've seen four 74 SDs with it but none had the paper work for it.

[SD Formula]

Originally Posted by 74 SD455 Formula

There were fewer NON-A/C Auto's made than there were stick car's. I.E. look at the break down of the 73 SD Formula's. 10 Stick cars and 8 non A/C auto's that year. My 74 Formula is a NON-A/C Auto.

What was the breakdown of the 58, 1974 SD Formulas, stick vs auto, a/c vs non-a/c? Mine SD Formula is an auto-a/c.

[74 SD455 Formula]

Originally Posted by SD Formula

What was the breakdown of the 58, 1974 SD Formulas, stick vs auto, a/c vs non-a/c? Mine SD Formula is an auto-a/c.

I know in 1974 for the SD Formula's there were 17 Stick cars made and 41 Auto's. As far as the breakdown of NON-A/C Auto's,I dont have that number.But givin the info provided by the number of 1973 SD Formula's that is available it has to be close as well.I too would like to see someone go the microfilm records and give us the breakdown in number's like they did in 1973.

[SD Formula]

Originally Posted by 74 SD455 Formula

I know in 1974 for the SD Formula's there were 17 Stick cars made and 41 Auto's. As far as the breakdown of NON-A/C Auto's,I dont have that number.But givin the info provided by the number of 1973 SD Formula's that is available it has to be close as well.I too would like to see someone go the microfilm records and give us the breakdown in number's like they did in 1973.

Thanks for the information, I hadn't heard of the 17 vs 41 breakdown.

[frank.g]

The reason we have a complete, 100% breakdown for the 73 Formulas and not for the 74's is that, sometime in the mid 90's, an enthusiast had a strong interest in the 73 Formula's. Through hard work and dedication, he was able to obtain all 43 VIN's through communication with each state's DMV. He then ordered the PHS documents for all 43 cars. He allowed me to compile the data on those 43, which appeared in one of the SD Registries, back in the time when they were printed and mailed. I have to believe the opportunity to gather this type of information from the DMV is no longer permitted. PHS, by contract, is not allowed to mine the microfilm for statistics. They are only able to fill orders from customers who provide a VIN. So, we will never be able to obtain a 100%breakdown on the 74's like we have for the 73's.

[starlightblack]

The greatest Firebird Formula ever built IMHO. Radio delete, 4-speed. What a beast. Rick Mahoney pics, his car.

[blue71ta]

Mmmmm, Florentine Red, yummy!

Can't believe it was ordered without tach / gauges though, bizarre...