I assume you're referencing the following footnote on the bottom of the application chart (photo 1):
"(#) Use (FP) radiator with close ratio 4 speed."
If so, look where the # footnote is used. It's only used on a 400 4 BBL engine in the F series (Firebird). That's because in 1971, if you ordered a close ratio 4 speed (M22) in a Formula 400, the standard rear axle was a 3.73 ratio, (photo 2), which required a heavy duty (FP code) radiator. The # footnote is not listed on the 455HO engine application, because the standard axle ratio was a 3.42, (photo 3), which did not require the heavy duty radiator.
Quote:
Originally Posted by T/A Fanatic
The note on the use of FP radiators for all M22 applications is where that statement came from in my first thread.
|