quote:Originally posted by 72pantera:
I know that the early Pantera's, like my 72 has 4V, however some of the later 70's models came out with the 2V, (most shipped to Australia had the 2V heads). That being said, I have heard of some people running 2V intakes on 4V heads with good results.
I'm not sure if the original Ford iron 2v manifold with physically cover the casting of the iron 4v port. I certainly understand that there is a big mismatch, but that's not what I'm refering to.
For instance, you cannot take an original Ford version of the 4v intake and install it on the Ford A,B, and C aluminum Motorsport heads.
The head itself is cast shorter on the bottom side of the port and will have a 1/2" gaping hole.
You could fill the bottom of the 4v port with epoxy or weld it up, but you need to do something with it.
The original Ford iron heads 2v vs 4v have the same bolt pattern but the primary location of the 2v port is located to the bottom of the 4v port. In this case the top of the ports do not align.
As Bosswrench mentions, if you are talking about any of the aluminum heads EXCEPT the original aluminum versions of the 4V heads cast back in 1968 for racing, you need to stay with the manifold designed for that head by the manufacturer.
In a couple of cases, the manifolds are by Edelbrock for certain aftermarket heads.
To new comers to the Cleveland series, this could all be very confusing for sure.
Generally speaking though, if you use a CHI 3v head, you use a CHI 3v intake, a Ford Motorsport (which arenow 30 year old designs) you use the Motorsport intake, Edelbrock heads, Edelbrock intake, etc.
Some are close enough that they can interchange but usually require some sort of port matching.
Some like the CHI are so close to the Ford Motorsport that if I didn't know better, would think that some of the Aussie's lifted that design...oh wait, improved it maybe what I mean?
