4.6l
- Thread starter maxjavt4
- Start date
Is there a pony on the plenum cover?? What side is the oil fill neck on? Is it on the passenger side or driver's side??
MyBloodRunsBlue
New Member
- Feb 1, 2007
- 127
- 0
- 0
I think the 99-04 engines have the oil fill on the passenger side. Mine does.
Driver's side would suggest a 96-98 motor.
However, the previous owner could have done a PI swap and just swapped the heads, cams and intake from a '99 over to the original 1998 engine. This would give the same 260-265HP as a 99-04 car.
Tougher to tell if this is what happened. Does the intake have an aluminum crossover line in the front near the thermostat housing??
Driver's side would suggest a 96-98 motor.
However, the previous owner could have done a PI swap and just swapped the heads, cams and intake from a '99 over to the original 1998 engine. This would give the same 260-265HP as a 99-04 car.
Tougher to tell if this is what happened. Does the intake have an aluminum crossover line in the front near the thermostat housing??
ascoldasice17
New Member
look at the intake manifold too...check and see if the bars under the plenum or small and close together or big and spread out.....but thats not positive tho cause he coulda did a PI swap either way a PI swap is better then a base 96-98 engine
He could have swapped the motor but used the original valve covers. Very possible.
Most 99+ mustangs do sound a little bit more stout than a 96-98 but that's a bad way to tell.
There probably is a way to tell PI heads from non-PI heads externally, but i do not know it
Most 99+ mustangs do sound a little bit more stout than a 96-98 but that's a bad way to tell.
There probably is a way to tell PI heads from non-PI heads externally, but i do not know it
All 2V heads look like that.
The only way to tell are little differences like this
96-98 head on left, PI head on right
If you want to pull a valve cover, this would be a dead give-away
The only way to tell are little differences like this
96-98 head on left, PI head on right
If you want to pull a valve cover, this would be a dead give-away
CobraRed_96_GT
Active Member
85 Coupe 5.0
Founding Member
Easiest way to tell is to get a look at the casting number on the head. It's right above the exhaust manifold, in the front of the engine on the right head, and the rear of the engine on the left head. It's going to be hard to see it, you'll probably have to get a mirror on a stick or something. There are 2 PI castings, Windsors have the individual cam caps like pictured above and Romeo PI's have the big bridge style one, so that's really not a good way to tell, just looking at the cam caps through the oil fill hole. Ford used Windsor PI's in the '99 and '00 GT's due to a fire at the Romeo Plant. They resumed using Romeo motors in '01 in the Mustangs.
Stock PI cars have the oil filler tube on the RH side, but if it's a headswap he could have used the original valve covers, so that's not good either.
Only real way to tell is to look at those casting numbers or remove the intake and look at the port shape, or take it to the strip and see.
PI Romeo Casting number RF1L2E-6090-D24D
Windsors have something like: XL3E-60690-D24D
Having a pony on the upper intake elbow is no indicator, mine has one also.
Stock PI cars have the oil filler tube on the RH side, but if it's a headswap he could have used the original valve covers, so that's not good either.
Only real way to tell is to look at those casting numbers or remove the intake and look at the port shape, or take it to the strip and see.
PI Romeo Casting number RF1L2E-6090-D24D
Windsors have something like: XL3E-60690-D24D
Having a pony on the upper intake elbow is no indicator, mine has one also.
Similar threads
