police car heads
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Joined: Dec 2003
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From: Spruce Pine, NC
police car heads
I salvaged a set of heads from a '94 police car. The ports are oval(old style) but as I look down the port it is noticably larger, however, the surface diameter of the port is the same.(I used a micrometer). The cams are still installed. Anybody know what I have, and will these heads work on my'97 4.6? Thanks
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Joined: Jul 2001
Posts: 4,038
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From: South Kitsap County, WA
The information through Ford is actually hard to come by when it comes to what is what. Look here and here to find out more as far as technical info, the articles are geared towards cars/stangs, but are better than nothing.
Assuming these are the stock heads on a '94 engine and not a later on hi-po swap - As far as I know all the 2V heads of that era are designed to flow the same cfm, it wasn't until the hi-perf heads and intake in '96 for the Mustang that any change was made. Then the next leap was '99s PI heads.
To determine if the heads will fit you need to know if these are Romeo (the cam girdles are a dead give away, 11 bolt cover) or Windsor heads (cam caps, 14 bolt cover) and what 4.6 you have (Windsor or Romeo). They should swap regardless of which design was used but you have to think about intakes and valve covers.
If these are hi-perf heads, you'll need the intake manifold to match, and see if the exhaust manifolds will match. The car manifolds tend to have the intake plenum and TB pointed towards the passenger side - not so on your truck - the plenum and TB face front. The placement of the plenum on the intake manifold and any mounting points for sensors and linkages may be different as well. I do not know of a kit to swap, so there might be some custom modification to make it work. If you have a Windsor design and these are Romeo heads, you'll need the right valve covers, as well.
-Kerry
Assuming these are the stock heads on a '94 engine and not a later on hi-po swap - As far as I know all the 2V heads of that era are designed to flow the same cfm, it wasn't until the hi-perf heads and intake in '96 for the Mustang that any change was made. Then the next leap was '99s PI heads.
To determine if the heads will fit you need to know if these are Romeo (the cam girdles are a dead give away, 11 bolt cover) or Windsor heads (cam caps, 14 bolt cover) and what 4.6 you have (Windsor or Romeo). They should swap regardless of which design was used but you have to think about intakes and valve covers.
If these are hi-perf heads, you'll need the intake manifold to match, and see if the exhaust manifolds will match. The car manifolds tend to have the intake plenum and TB pointed towards the passenger side - not so on your truck - the plenum and TB face front. The placement of the plenum on the intake manifold and any mounting points for sensors and linkages may be different as well. I do not know of a kit to swap, so there might be some custom modification to make it work. If you have a Windsor design and these are Romeo heads, you'll need the right valve covers, as well.
-Kerry
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Joined: Nov 2006
Posts: 4,517
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From: SE Wyoming
The pre-95 heads will also get a nasty valve guide leak and start to smoke, as said above those heads are not superior in any way. Check this site out for all the 4.6L info you could ever want up to about '02:
http://www.babcox.com/editorial/ar/eb40228.htm
Also the only difference between a normal panther and a CVPI is the programming when it comes to the engine performance side, nothing internally can be gained from swapping parts.
http://www.babcox.com/editorial/ar/eb40228.htm
Also the only difference between a normal panther and a CVPI is the programming when it comes to the engine performance side, nothing internally can be gained from swapping parts.
