SS/D Thunderbolt in 1969 ?

[DeuceCoupe]

Originally Posted by Paul Precht

The original T-bolt factor was 425.

That was Ford's plan - especially with the 1964 LightWeight Galaxie (LWG).
Car Weight 3749
427/425-8v HiRiser 425hp
3749/425=8.82
Ford wanted to run that in A/S=8.70 class
There's even a Downtown Ford ad saying that.

NHRA just laughed & created the AA/S=7.00 class.

Same engine in the T-bolt, which then had to be at least 460hp so
3206/460=6.97
That put the T-bolt into S/S=0.00 class and the LWG into AA/S=7.00 class.

I've just guessed 500hp since books "say" that the LWG was "near the top" of AA/S, so
3749/500=7.49

Now, if we just lower the 427 HiRiser to 450hp (which I've heard was the case in eg 1973) we get
3206/450=7.12 and all the sudden the T-bolt now runs in 1969's SS/D=7.00 class, as the picture shows.

BUT - there's that thing about no fiberglass bodies. Mopar ran a 64 Race Hemi at 69 Indy but it was a steel body car, also in SS/D=7.00. The Hemi was not refactored, the steel body was just heavier.

Convoluted story, that's why I asked!

WHILE I'm at it:
The 69 Indy sheet says Tom Marsh was R/U in SS/D=7.00 class in a
1964 Ford.
Any idea if it was (another) T-Bolt or a LWG?