Going through this thread - from " Oldfart's " Inquiry.
These photos from Graeme Kennish archives - Allan Dick had posted them and indicated it was 1964.
From comments here It seems that the track was used in 1962 - 1963.
Jaguar and Zephyr .. Alistair McBeath #66 and Sprague had #51 in 1962
Small Saloon Car field, Austin A40's, a VW, Anglia's, Mini's. - 1962 - [ not as noted on the photo- to be corrected ]. Details from Milan Fistonic - Race numbers from Entry List ;
Kerry Grant A40 994 cc ?#70
Paul Fahey VW #71
C M Hogan Anglia 997 #42
-[ pre the Allardette version - Supercharged rated at 1. 5 times = 1495 cc 997 or 1497 cc - 998 motor ]
Neil Johns Mini Cooper 997 #59
Brian Ax A40 948cc #64
J Murphy Q *** in his Anglia #34 - attacking the Haybales. He is entered in 1963 as #34 Anglia with a 1640cc engine.
Another Anglia was #34 in 1962 with a 998 cc engine - this has narrow wheels so maybe the 1962 Race. Also others of Allans photos from 1962.
Need to check the details against the Entry Lists from GD66 and Milan Fistonic copied below
December 1962 - the last weekend of the year which became the traditional date for the Big Baypark meeting.
December 1963
I have a couple of Newspaper /Motorman articles which I show as being 1964 .. buy guess published in January 1964 about the December 28th, 1963 Event ??