Just how quick were the 273 Commando's in the Quarter-Mile.

I think you misunderstood.
The spec. I was referring to,is the .76hp/cid. Ergo; .76 x 318 =241.68 hp.
I could see how you made the jump.Post #77 edited.

As to the .97, well that was referring to the 273;ergo, .97 x 273 = 264 hp. This would indeed be a race273.
I agree that 1.1 on a 360, which being 396 hp. would not be a race engine, but certainly a pretty hot streeter.
On a 360, 1.2 hp/cid is still streetable(430hp),cuz in a 2900 lb A, it could easily go 12.7 on street suspension, a stockish TC, 3.55s and probably on skinny street tires.

The whole aim of the story was in response to poster 273, who in post #71, stated " My current 273 should run 12's.. ", and in his Avatar is an early Barracuda. For this to happen, the story applies; 2900 lbs, 264 hp, and a race chassis, minimum ET of 12.7sec. Chryslers empirical data is hard to argue with. Since he said "should",I was merely trying to help him achieve his goal(s).

My Barracuda is set-up for road racing. I could be fun swapping out my big torsion bars and soften up the front shocks etc for a trip to the drags :).
The 273 in it now is basically a race motor (over 400hp). Its running a solid roller, EQ Magnum heads 12.1 comp. It doesn't stop me driving on the street though. Last week it did 500km's round trip to the track and back and over a 100kms of flat-out track racing (on pump gas)..