['ol Pinion head]

Originally Posted by 1971455HO

Thanks for posting this up Mike.

Thanks "ol Pinion head for the non-AC clarification. If you don't mind sir, what was the difference in the '71 F body HO w/AC dipstick versus the '71 A body HO w/AC?

an original '71 A-body 455 HO AC dipstick is aprox 3/4" longer than '71 F-body 455 HO AC dipstick. I have an original '71 A-body HO version, have never owned the '71 HO F-body AC version, have only had a non AC '71 T/A project.

For '72, the upper oil indicator tube for 455 HO cars was slightly different than the '71 HO version. The '72 HO upper tube is the same as the one used on the '73 & 74 SD cars that had AC. This style, '72-74 roundport app upper tube was reproduced about 15 years ago. avail from PY...assume Ames.

The dipstick used with the AC application '72 HO and SD cars with AC is the same as used on many years of D-port AC cars.