GT40 Heads................

94StewFord · Jan 13, 2022

What's the going rate for a set of buildable GT40 heads?

Thank you!

95opal · Jan 13, 2022

Any more than 200 a pair is over board. That said ii wouldnt pay a dime for them lol

94StewFord · Jan 13, 2022

I'm looking to build an old school iron motor, not looking for a ton of HP.........

RAU03MACH · Jan 13, 2022

you would need around 6 to 8 hundred for a little performance , porting polish

joe65 · Jan 13, 2022

yeah still a good head. ported...with a gt40 intake and good cam....good torquey fun right there. watch for them on ebay or the corral. i see them often still.

94StewFord · Jan 14, 2022

Talking to a guy who has a new set straight from Ford Motorsports, he want's $575.00 and the are ready to bolt on? OR am I better off finding a set of "Core" heads and having my shop port/polish etc?

joe65 · Jan 14, 2022

depends on what you want to spend your money on. an unused set is a good set. But if you're going to port them or mess with them at all seems to make sense to get a used set maybe cheaper? Never a bad idea tho to start with a fresh new set.

94StewFord · Jan 15, 2022

Also, what's the difference between the 3 and 4 bar GT40 heads? 3 bar factory and 4 bar aftermarket?

tinnocker · Jan 15, 2022

I can tell you what I know but if you Google, their is plenty more. The bars are a raised markings on the end of the heads , 1/4''x 1.25 '' approximal. The three bars came out first on mid 90's Explorers and maybe other Ford brands of the same years. The 4 bars came out somewhere around 97 for a few years. The 4 bars are just al little better, but I don't remember in what way, maybe different valve position, but they have a different spark plug angle and require the factory exhaust of that year. Some aftermarket header companies offer headers for the 4 bar. The earlier 3 bar version are just known as GT40 heads and the later 4 bar heads are known as GT40-P heads. All the headers made for the 302/5.0 Mustangs will fit the GT40 heads and the GT4O -p heads but if used on the "P" heads the spark plugs will be almost impossible to install and remove and if you can install them, the spark plug wire will be so close that it will melt. Most guys run the GT40 heads because of the spark plug issue with the P's but if you get the right headers, then they are fine. With what I have read, there isn't much advantage of running the GT40p head with so little horse power gain.