I been think and would like GT40 I could have bought from ebay but not now with no job and need finish engine project at college.


At junkyard they have lot explorer most is old style body. Do they have 302 with gt40? Anyone have pic of identify say GT40 or model name? So I want know I get right head since junkyard want $25-40 each head.

 

Here you go.. the GT40 heads are identified by 3 vertical bars on the end as well as GT cast into the corners. The P heads have 4 vertical bars and GTP cast into the corners.

 

here's a question,
i've been told that heads from a 302 will fit a 351W, and that GT-40 heads would be a big inprovement to my stock 78 heads(conanski), but the valves look like they're the same as in the pic, if someone did a GT-40 swap on my motor how would i tell?

 

looking at yhat list id say the heads off the 96-97 exploder would be the ones to get am i wrong? if i am witch set would be the best 86 stang 302

 

You can't tell by looking at the pic but the GT40 heads have slightly larger valves and the ports flow significantly better. Combined with the smaller combustion chambers these heads would produce big power increases on a smog motor as long as the cam, intake, and exhaust are also upgraded, these parts were also restrictive on these motors.
To put 302 heads on a 351 the head bolt holes(in the head not the block) have to be drilled out to 1/2". That's it.

An '86 mustang motor will have E6 heads, so every head in the chart above except for the '79-'84 302 heads will be an improvement. The best performing heads are the GT40P, you just can't use equal length shorty headers with them and they will require 90 deg plug boots.

 

the motor already has a edelbroke intake on it i was thinking about getting a matching cam from them as well would the headers for a 302 truck work on the gt40p heads?

 

Conanski - What kind of header setup would you need to put GTP heads on a 78 F150 with a 351W?

Josh

 

some of the ford explorer 302 heads have 1/2" holes in the heads already, a buddy of mine found this out when he put a set on his carbed 351. dont know when or why they started doing that.

 

The P heads will work with longtubes.. any longtubes, just need plug wires with 90 degree plug boots.

 

Cool, thanks

 

96-01 explorer 5.0 explorers have them.

 

all 96 to 01 explorers ? how about the mecury mountaineers ? thanks rg

 

yes, any explorer/mountaineer with the 5.0 in it.

 

Thank you , just bought a low mile 99 mountaineer that had been wrecked , but it started with a turn of the key . May look at the heads for my next rebuild or engine swap .

 

no problem. i have a wrecked 97 explorer 5.0 myself i need to swap the V8 into my 96 explorer. except it has 230,000 miles on the motor/tranny/t-case with no rebuilds of anything..it runs/drives well but i'm going to rebuild it all before i go thru with that.