Twisted

Just wondering how GT40 Explorer heads will affect my emissions when test time comes. Thanks.

gspfunk

The GT-40P heads were actually made to be emissions friendly. Ford replaced the 3-bar gt-40's w/ the P heads b/c the gov't became more stringent on emissions standards and Ford was afraid the Exploder wouldn't cut it.

All this is assuming they aren't ported or have the thermactor bumps removed on the exhaust side....if that's the case, I would still assume they'd pass, but I'm not sure.

CLICKY HERE!!

Twisted

Thanks GSPfunk!

stanglx2002

yeah you should be fine

Quik

heres a thing tho. they dont have provisions fro EGR so you will fail visual

I3atR!ce

make sure you look at them back of them, not all gt40 heads came with the hole in the back of them for the smog pump. if you dont look, like me, you'll have to get them drilled for it. that's only if your going to run a smog pump though.

Twisted

Glad you chimed in, Quik and 13. What about aftermarket heads like Edelbrock the like? Same story, or are these heads ready to bolt on?

Quik

you would have to check to see if they have a SMOG number for them.

you can get P heads to be smog but you need to have them drilland tapped for it