I have to redo my piston rings so i figured while im at it id pop in a b303 cam and gt40 heads of a ford explorer. can i literally just pull them straight off the explorer and bolt them as-is onto my mustang?
ford explorer heads?
rusty2407
1 - 20 of 31 Posts
From what ive been researching yes you can just don't get a set of GT40P (F77E)heads, The angle of the spark plug is different and would require you to buy new headers. A couple easy ways to tell are:
GT40's, have 3 bars on the front the heads and generally have a casting number of (F3ZE, F1ZE)
GT40P's, have 4 bars on the front of the heads and if you look on the top of the heads by the push rod holes you'll see a stamping the clearly says GT40P
GT40's, have 3 bars on the front the heads and generally have a casting number of (F3ZE, F1ZE)
GT40P's, have 4 bars on the front of the heads and if you look on the top of the heads by the push rod holes you'll see a stamping the clearly says GT40P
Joined
·
6,027 Posts
yes the header selection is narrowed but still not a big deal yes the p heads are better due to the spark plug angle being closer to the center of the combustion chamber. if you get a set of heads its smart to bring em in to have em checked out maybe even a valve job to make sure everything seats the way it should. loom into a different cam try to find a trickflow stage 1 or 2 they are everywhere and will be better for your motor.
Joined
·
6,659 Posts
here's a flow chart i had posted in another thread which shows the difference between the e7, gt40 and gt40p heads. and listen to these guys when they say to avoid going with a ford letter cam. especially a b303, that's barely better than stock.
![Image]()
Joined
·
704 Posts
They don't blow. There are better cams but dollar for dollar, they are still heads above the stock cam. We were getting mid 12's with an F303 and stock bottom end with some reworked E7 heads. The next best value would be Trick Flow
Speaking of the trickflow Im going to be using the TFS1 (51402000) Trick Flow Specialties TFS-51402000 - Trick Flow® Track Max (TM) Hydraulic Roller Camshafts for Ford 5.0L - summitracing.com
With a set of GT40s capping it off What springs should i look into gettin to handle the lift of the cam?
Joined
·
6,659 Posts
i replaced my f303 with an anderson n-41 and would do it again in a heartbeat
Joined
·
9,271 Posts
you sound like a magazine*L*....all the abc cams are way better than stock if you have the right components..though I don't like any of them..how was that test conformed on the heads? you can do minimal work on the gt40 if you have them to flow very well
here's a flow chart i had posted in another thread which shows the difference between the e7, gt40 and gt40p heads. and listen to these guys when they say to avoid going with a ford letter cam. especially a b303, that's barely better than stock.
![Image]()
Joined
·
6,659 Posts
^ dude, that chart is just showing stock numbers. all i said is i wouldn't waste the time, money or effort installing a b303 cam. you said yourself you don't like letter cams so what the **** is your point?
Joined
·
184 Posts
There not terrible, they are just older technology so you might as well go with trickflow 1 or 2
Joined
·
704 Posts
Their main drawback is that they are single profile cams and they tend to be conservative. They have been around a long time and considering they are factory replacement pieces designed to fit a wide range of applications, they are decent performance upgrades. As far as spring upgrades, I believe that the Trick Flow upgrade kit will work on the GT40P's and are good to .542" of total lift.
Joined
·
2,159 Posts
what about the X cam lol
Joined
·
6,659 Posts
^ you tell us
Ive also been thinking about the AFM N-41 and N-412 i know they're similar. But what heads are you running on your car?
Joined
·
2,159 Posts
i dunno i just bought the car while im over here in iraq. im gonna run it for a while and see if i like it or not. if i don't ill prolly switch over to a tfs cam.
anyone have experience w/ the x cam?
Joined
·
6,659 Posts
i was running the n-41 on gt40p heads
1 - 20 of 31 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
