383 Head Question

[Go Fly]

One of the heads has what appears to be a Heli-coil insert. It's located at the rear facing the firewall.

It's on a 70 383.

 

[RemCharger]

Must be on the drivers side. Of no real concern, was probably a stripped and repaired alt most bolt hole.

 

[RJRENTON]

One of the heads has what appears to be a Heli-coil insert. It's located at the rear facing the firewall.

It's on a 70 383.

AND YOUR QUESTION IS. ?????? Plus how about a few pix to illustrate your question......
BOB RENTON

 

[pnora]

One of the heads has what appears to be a Heli-coil insert. It's located at the rear facing the firewall.

It's on a 70 383.

Ok. On a 50 year old casting no doubt a little acceptable repair was made. What is your concern????????????????

 

[IQ52]

You lucky devil. Not everyone will get a Heli-coil there during their lifetime.

 

[Daves69]

You lucky devil. Not everyone will get a Heli-coil there during their lifetime.

Lol, how many get a pipe plug...............

 

[PRHeads]

I’m not sure what the purpose of the hole is where the pipe plug is, but it’s factory.
I’ve seen it in that exact place on a number of different heads.

 

[Daves69]

....I’ve seen it in that exact place on a number of different heads.

I was thinking it was a casting issue such as porosity/void causing a pin leak. The plug might be the fix to save the casting. Lol, although I'm curious, I'm not going to remove it!

 

[33 IMP]

If the helicoil was done properly, it's probably a stronger hole than the factory cast iron.

 

[PRHeads]

I was thinking it was a casting issue such as porosity/void causing a pin leak. The plug might be the fix to save the casting. Lol, although I'm curious, I'm not going to remove it!

The first time I saw it I thought the same thing.
Then when I had a pair of heads come in where both of them had the exact same thing...... I figured it’s done for some other reason.
I’ve probably had a dozen heads like that come through the shop....... various casting numbers....... plug is always right in that spot.

 

[Go Fly]

Sorry to take me so long to post pics

Thanks

 

[440 PHIXX]

Whoever installed it didn’t thread it deep enough. I usually thread them at least one turn past the top. You could pull it out with needle nose pliers, run an STI tap in to clean it and install a new one.

 

[khryslerkid]

That head might have been on the right side at one time and the hole was stripped as it was used for a bracket or alternator bolt.

 

[WileERobby]

Unless you use it for a chain in hoisting, it's useless on that side.

 

[1968rt]

Leave it on the drivers side and forget it!!

 

[33 IMP]

It's poorly installed. It can be redone..... but if you aren't using that hole for anything on the backside, why bother?