Atoll Blue '70 Firebird Formula, 400/M21 4-Speed

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**mockingbird812** · #1 08-30-2018, 12:04 AM

Nice. agreed - great color on a low option Formula. What would “axle-perform” indicate?

Edit: helps if you read the entire ad, 3.73 ratio - did it come standard with a 3.55?. I thot that looked like a 12 bolt axle - i did not know these Pontiacs could get a 12 bolt.

**Tracker1** · #2 08-30-2018, 09:18 PM

Quote:

Originally Posted by mockingbird812

Nice. agreed - great color on a low option Formula. What would “axle-perform” indicate?

Edit: helps if you read the entire ad, 3.73 ratio - did it come standard with a 3.55?. I thot that looked like a 12 bolt axle - i did not know these Pontiacs could get a 12 bolt.

Yes, 3.73s optional. The 400 cid cars got 12-bolts, just for 1970 though.

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