kind of hard to say.. one of those 'what if's... i do find it unbelievable and amazing and odd and incredible that chrissie was wielding the wood racket playing against others (martina, king at 1982 wimby,and others) who were using not only graphite rackets, but the larger frames..as well as in 1983!
i mean imagine if a top player today was playing with a 1980's or even 1990's graphite metal racket playing another top player using the finest, most powerful, most whatever racket of 2011!..
it would be like a different sport for these 2 playing against each other.....
either a stubborn refusal and blind obsession with playing her way with a wood racket on chrissie's part or a true believe in her talent that she could still win with a wood racket... i would say both... i mean besides martina she was still beating everyone else in 1982 and 83....
That is why I think one of Chris's greatest achievements was beating Martina really quite handily on grass at the 1982 Australian Open using wood. She ran her close at Wimbledon 1982, and do not forget that in the graphite era, Chris won three grand-slams in a row from 1982 to 1983 (on all surfaces of hard, grass and clay) when all her main rivals were playing with racket. That, of course, says more about Chris herself and what an exceptional champion she was.
The graphite gave more power, but Chris had power enough from the proper and economic way she executed the strokes. The wood gave her the touch, which was what drove opponents up the wall, especially on clay (Camille Benjamin described playing her as like "running around on marbles").
Regarding the original question: would Evert have won more slams, I am not sure, because this period coincided with Martina Navratilova when she was at her very best. Chris had more or less grown into her Pro Staff racket by the 1984 US Open, and had the crowd behind her, but Martina still eked out a victory 6-4 in the third set (rather like their encounter at Flushing Meadows in 1981).
Chris moved to graphite two years later than everyone else. I think if she had moved earlier, then she might have been improving earlier on than 1985, when she won a second Grand Slam title in a row and took back the No. 1 ranking from Martina for about half the year. Yes, it might
have helped her to win the 1982 Wimbledon match (giving her a grand slam 1982-83!), but I think if she was with graphite as early as 1982, then the benefits would have been not
getting such a drubbing at the 1984 French Open, winning a set in the 1984 Wimbledon final, and maybe
even winning the 1984 US Open. Chris really spent 1984 growing into graphite, with the benefits appearing in 1985. But I still think that 1982-84 in any case were the golden years for Martina, because of her fitness regime and less complicated love life, whereas Chrissie was going through a parallel rough patch (marriage problems, food poisoning at Wimbledon 1983 - and even, I think, ill at the 1982 US Open).