[DeuceCoupe]

Originally Posted by Rat Patrol

Ive been advised by Raj Reddy who's a Chevy guru that Nicholson ran the dual quad set up, supplied by Chevrolet, at the 61 Nats..before it was commercially available..... hence it was in OS/S , not S/S.

“Mal - They received the dual quad setup and cam August 1961 prior to Indy ‘61 (placing them in OS/S) . Cars ran single four barrel 360 HP at ‘61 Pomona Winternats.“

NHRA wisely started OS/S for that reason, too many "trunk & parts counter" combos coming out. The 390/401-6v Ford & 421/373-8v Pontiac got the same treatment, bumped into OS/S.

Very few 409s period were made in 1961, about 160 or so IIRC - let alone a dual quad version. Usually on the street it was the 348 Chevy that met the 390 Ford.

Was Nicholson the OS/S R/U at 61 Indy with that car or dont we know?