explorer heads on 84 mustang

[black 96 gt]

I have a 1984 mustang gt with a carbureted 5.0. I would just like to know, am i going to have any problems putting the gt40 heads of an explorer on a 302 without fuel injection? If it is possible what all would i need?

 

[dcurtis]

The heads should be a direct swap, head gaskets and intake gaskets.

 

[BlownFiveLiter]

Depending on if they're the GT40P heads, you might need either some different headers, or 90° plug boots. Typically you can get away with using regular headers with the P heads though.

 

[mob]

If it is an 84 I am going to assume you have flat top pistons in which case, gt40 heads will not work. If you already have them check PTV clearance first with the cam you have. But it is most likely that they will not work.

 

[BlownFiveLiter]

I don't believe the 84 had flat tops.

 

[mob]

hmm mabye your right looks like they went flat top in 86, im am not sure so dont follow my advise.

 

[black 96 gt]

I'm not very familiar with the pre 1987 mustangs so i'm going to have to do a little research. but if i do not have flat top pistons should the heads bolt right on? thanks for the help

 

[BlownFiveLiter]

Yep. They'd bolt on like they came from the factory that way.

 

[Liv2roc]

the 84 mustang has flattops with 4 valve reliefs dont know why they say it started in 86 because I have been in three 84 stock engines and all had flattops

 

[BlownFiveLiter]

We mean with no valve reliefs, Liv2roc.

 

[Liv2roc]

so is that what a true flattop is with no valve reliefs? so what are they called with valve reliefs its not dished?