FE Power Forums

FE Power Forums => FE Technical Forum => Topic started by: frnkeore on July 21, 2025, 07:13:14 PM

Title: 427 Forged Crank
Post by: frnkeore on July 21, 2025, 07:13:14 PM

I just got a C5AE C crank. It had been stored, a long time with hardened thick grease on the journals. I just took it to my machinist to hot tank but, I'm concerned as to what might be in the X drilled holes. he said he couldn't get the plugs for the X drill, any more.

Has anyone dealt with cleaning out that cavity w/o pulling the plugs?

Title: Re: 427 Forged Crank
Post by: blykins on July 22, 2025, 04:46:09 AM

I think you're tempting fate if you don't pull them.   Years of crud accumulates back there. 

Title: Re: 427 Forged Crank
Post by: frnkeore on July 22, 2025, 11:00:44 AM

It's at the machine shop so, I can't measure it right now. Does anyone have the size or a part # for the plugs?

Title: Re: 427 Forged Crank
Post by: blykins on July 22, 2025, 12:50:46 PM

I don't have one here, but here's what I found with a quick search:

"Ok, I took a look at what I have. Couldn't find any original Ford cup plugs. However, I looked at one steel crank I bought from Carl Holbrook years ago and the cup plugs reads "Dorman 7/8 P14C". I have another steel crank that do not have any cup plugs installed. The cup plugs appear to have an Associated Spring logo stamped on them, along with "PC29 7/8". The box for them reads: Pik-A-Nut, Hunckler Products, Inc. Huntington, Indiana 46750. 7/8 expansion plug regular cup plated steel CXP56 Old No., then in larger font "191 0560". Cost .40 ea.

The Retaining Ring is about .952 dia and .043 thick.

The threaded Plug used on the 427 Steel service crank has a part number of 371485-S, and have a major dia of 1.032. They cost $2.95 ea back in 1985."

Title: Re: 427 Forged Crank
Post by: frnkeore on July 22, 2025, 01:19:21 PM

Thanks, Brent. I'll see what I can find.