FE Power Forums

FE Power Forums => FE Technical Forum => Topic started by: winr1 on May 30, 2019, 07:27:28 PM

Title: How thick are 427 screw in core plugs ??
Post by: winr1 on May 30, 2019, 07:27:28 PM

I have 6 screw in core plugs, they are .836 thick

Are these correct for a 427 ??




Ricky.

Title: Re: How thick are 427 screw in core plugs ??
Post by: CaptCobrajet on June 07, 2019, 06:45:14 PM

Originals are .500 deep.  6 threads on them.....As long as you don't bump the cylinders inside, it won't matter.

Title: Re: How thick are 427 screw in core plugs ??
Post by: Barry_R on June 07, 2019, 09:21:37 PM

The big electrical type plugs will hang out the sides of the block  good bit and can interfere with the motor mounts.
We buy plugs in bulk and machine them on both front and back to get them closer to the OEM thickness

Title: Re: How thick are 427 screw in core plugs ??
Post by: winr1 on June 07, 2019, 11:36:55 PM

Thanks yall :-)

Looked a bit thick too me

Any want them free gratis ??



Ricky.

Title: Re: How thick are 427 screw in core plugs ??
Post by: CaptCobrajet on June 08, 2019, 09:47:48 AM

I bought a second tap and cut it off sorta like it would be a "bottom" tap. We thread the hole a little deeper without hitting the cylinder core, so we can get a little past flush.  I got some brass recently somewhere that we're .750 thick.....square socket head, but they worked good.

Title: Re: How thick are 427 screw in core plugs ??
Post by: Nightmist66 on June 08, 2019, 07:07:58 PM

I just installed some plugs on my own block last weekend. I got the ones from DSC that are .650" thick. They have a 3/4" hex drive. I have two taps and as Blair mentioned I cut one down about 1/4" shorter so I could use it as sort of a "bottoming" tap. I only needed the short tap for one hole, all the others threaded with the long tap without hitting a cylinder.

Title: Re: How thick are 427 screw in core plugs ??
Post by: winr1 on June 08, 2019, 10:58:51 PM

Thanks much guys :-)




Ricky.

Title: Re: How thick are 427 screw in core plugs ??
Post by: fekbmax on June 09, 2019, 12:44:40 AM

I use Dennis's plugs on the race motors. Set them with epoxy,  then block fill. After everything has set and is good I dake a angle grinder with a grinding wheel and make them flush with the block for a nice neat custom look. I also have used the 1-1/2" brass clean out plugs on street engines.  A good flap sanding wheel on the angle grinder smoothed out the rough cast and makes them nice and purrrdy lol. Looks good with a nice painted Ford blue block .

Title: Re: How thick are 427 screw in core plugs ??
Post by: cammerfe on June 09, 2019, 09:42:54 PM

Performance FE engines are black! ;) :)

KS

Title: Re: How thick are 427 screw in core plugs ??
Post by: winr1 on June 10, 2019, 06:55:36 PM

 :)



Ricky.

Title: Re: How thick are 427 screw in core plugs ??
Post by: TomP on June 11, 2019, 04:57:38 PM

Would bottoming against a cylinder be a bad thing or would it provide a little more strength?

Title: Re: How thick are 427 screw in core plugs ??
Post by: Heo on June 11, 2019, 06:22:05 PM

It would distort the cylinder