[rusty2407]

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?

[foxbdy88]

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

[rusty2407]

ive heard the gt40s suck compared to the p's, is this true or is it a barely noticeable diff, im not looking for a race car, just something with enough power to have fun so i dont really care if its a 10hp diff

[e3sean]

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.

[grnstang]

yeah alphabet cams blow idk how many times i have to say it for poeple to understand

[stangfreak]

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.

[trueblue01]

Originally Posted by grnstang yeah alphabet cams blow idk how many times i have to say it for poeple to understand

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

[foxbdy88]

Originally Posted by trueblue01 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?

[stangfreak]

Originally Posted by trueblue01 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

i replaced my f303 with an anderson n-41 and would do it again in a heartbeat

[vfast]

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

Originally Posted by stangfreak 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.

[stangfreak]

^ 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 fuck is your point?

[smott]

Originally Posted by grnstang yeah alphabet cams blow idk how many times i have to say it for poeple to understand

There not terrible, they are just older technology so you might as well go with trickflow 1 or 2

[trueblue01]

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.

[mustangsoldier]

what about the X cam lol

[stangfreak]

^ you tell us

[93hatch]

im very happy with my tfs 1 cam, i like the powerband alot, pulls all the way to 6k and hardly lost any low end

[foxbdy88]

Originally Posted by stangfreak i replaced my f303 with an anderson n-41 and would do it again in a heartbeat

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?

[mustangsoldier]

Originally Posted by stangfreak ^ you tell us

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?

[stangfreak]

i was running the n-41 on gt40p heads

[TKOTLARZ]

u can also look into a custom cam..it isnt much more money than the cam ur lookin at, and its made perfect for your setup..look into that for real.