Fox Anyone know what heads these are

[Andresquintana.mma]

Pulled the engine out of my moms car a while back got a roller to put the engine in and was wondering what these heads are? SN-50717-2 bought a power washer to clean up the engine if anyone was interested in seeing a before and after pic lmk!

 

[Andresquintana.mma]

Bump

 

[General karthief]

Lets start with what car they are in and a pic of the end of the head.

 

[Andresquintana.mma]

1989 Ford Mustang 5.0

 

[Ryuk]

Have you had the valve covers off? There might be a casting number under there that can help.

 

[Andresquintana.mma]

Have you had the valve covers off? There might be a casting number under there that can help.

I haven’t pulled the valve covers off I’ll get that done soon and keep you updated. Thanks!

 

[General karthief]

Those look like aluminum heads

 

[Andresquintana.mma]

Those look like aluminum heads

Yes they are aluminum heads for sure. But idk from what company. They aren’t gt40 heads.

 

[General karthief]

Ford made some gt40x heads that were aluminum.

 

[Andresquintana.mma]

Ford made some gt40x heads that were aluminum.

Oh nice! I’ll gave to pull off the valve covers and see if there’s any markings. What’s the difference between gt40, gt40p and gt40x heads

 

[Andresquintana.mma]

Ford made some gt40x heads that were aluminum.

Would the spark plug that I’m using help at all? I tried to cross reference them but no luck.

 

[General karthief]

Gt40 have 3 vertical bars on the end of the head
gt40p have 4 bars and a different plug angle
gt40x are aluminum they have a FORD logo on them I think.

 

[General karthief]

Would the spark plug that I’m using help at all? I tried to cross reference them but no luck.

i doubt it.

 

[Andresquintana.mma]

Gt40 have 3 vertical bars on the end of the head
gt40p have 4 bars and a different plug angle
gt40x are aluminum they have a FORD logo on them I think.

Awesome thanks for the info

 

[nickyb]

They look like your mom's heads

 

[nickyb]

But seriously did you pull valve cover and get some numbers?

 

[Andresquintana.mma]

But seriously did you pull valve cover and get some numbers?

Lol not yet I’ll do that soon thanks though

 

[nickyb]

Cool,you may have scored , hope so.

 

[revhead347]

That stamping looks like something someone punched in later. There will be more original casted part numbers under the valve cover.

Kurt

 

[Mustang5L5]

I think the stamping is just a Serial Number.

Is the stamping the same on both heads, with a -1 on one and a -2 on the other?