I don't think Ford would appoint Volcker. Volcker was focused on fighting inflation, which Ford originally supported but later came around to fighting unemployment. There is a direct correlation to prove this. Here is the unemployment rate between 1974 and 1994 OTL. Volcker was appointed in 1979.
Before Volcker was appointed in 1979, the economy was growing at about 5% each year after 1976. What stopped that was the Iranian revolution and the subsequent oil crisis. Never the less, Inflation was increasing as soon as Jimmy Carter took office the inflation rate was about 5% and right before the Iranian revolution began, it slowly increased to 6.8% (
http://www.inflationdata.com/inflation/Inflation_Rate/HistoricalInflation.aspx), now I'm not exactly sure what caused it. I'm assuming it was something the Fed did. I'm not familiar with economics, but I think that without the Revolution, inflation will still continue to rise (albeit, more slowly.) and then start to slowly decline once the economy gets back in motion. Obviously, this might overlap in to Ford's successor's term.