? about emissions legal heads

[parchisi]

Hey all, I am trying to figure out what the difference is between an emissions legal head like the AFR 185, and one that isn't, like the 205 or 225. Can anybody enlighten me? I was looking at the pictures of BlackVert's 205's and they don't look any different than my 185's. Thanks.

 

[Aryan15]

I think its the holes in the back of the heads for the air injection pipe.

 

[Green 94 5.0]

Aryan15 is correct. the emissions legal heads have the holes for the smog tube and the non emissions heads do not. that is the only difference.

 

[parchisi]

OK, thanks.

 

[Daniel50]

you can get those tapped in for not much at a machine shop

 

[parchisi]

Would it be functional?

 

[OrangeMustangGt]

do you need a carb number? If you dont, then dont worry about "emmissions legal heads"

My p heads dont have tha air tube in the back, and i disconnected my egr totally, and my car passed fine....

I just put the smog pump tube right to the cats so they get air all the time. none of that air valves, ect down the pass side header.

I also passed with a cam, and 42lb injectors, etc. The cam is what has the most effect on actual emmissions....the intake and heads dont

 

[Green 94 5.0]

you can get those tapped in for not much at a machine shop

why would you want to? for that just buy the emissions legal heads (unless the heads are bigger than afr 185's)?