[Rat Patrol]

Originally Posted by DeuceCoupe

Doggone it all this digging, I looked at 1961 again:
https://skunkwerkssuperstock.wordpre...thering-storm/

Another small oops, excusable for a Mopar guy I guess:

The 1961 409 was a single 4v, 360hp.

The top 1962 409 was the Beach Boys "4-speed dual quad positraction 409"
"409 409"
The song actually sings 409/409, inches and HP rating.
The 409/409hp-8v was the 1st DUAL quad 409.

In LATE 62, the 63 service parts (heads & cam IIRC) came out that actually made the 409/409-8v effectively a 409/425hp-8v, even though it kept its 409hp rating.

For 63-64, that same engine became the 409/425hp-8v.

So pretty much every 409 car you saw in 1960s class racing was a 1962 car, with a 409/425hp-8v under the hood (but rated at 1962's 409hp) or a 409/400hp-4v under the hood (but rated at 1962's 380hp)

Not as convoluted as all those Mopar combos (ever count how many 383/330hp engines Mopar had?????) but still complicated.

Of course the Beach Boys song features a real 409 soundtrack.

This is fun stuff, glad the Nostalgia Stock section has some life again.

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.“