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Official Explorer/GT40/Cobra intake thread

66825 Views 56 Replies 25 Participants Last post by  need4spd90
ok,maybe one of the mods can make this a sticky..ill work on a explorer gt40/gt40p head thread later

first off,
the differences in the FRPP Cobra intake,Early Explorer Intakes(mostly 1996-1997 and some very early 1998 models),and the later Explorer intakes(late 1998 thru 2000)

Cobra lower-has EGR hole thru center and EGR coolant return line drilled. to eliminate/block off the EGR,from the lower,you need to get 2 pipe plugs,put one in the center EGR hole,and one in the EGR coolant return line. no drilling tapping required for the ACT sensor in runner #5.DONE.

Early Explorer lower(has center hole)- to eliminate the EGR,you'll need to plug the center hole with said pipe plug. EGR coolant return line is not drilled,so you dont need to worry about that. Drilling/tapping of the #5 runner for the ACT will be required. the early Explorer lowers have a boss on the #5 runner for this to be done.

Later Explorer lower(has no center EGR hole),has no EGR coolant return line,still needs #5 runner drilled/tapped for ACT sensor. has no boss cast in for this,but the runner itself can still be tapped,just have to be very careful cuz there is not as much "meat" as the early lowers that have the boss built in

That being said,the ACT sensor can also be relocated to the air inlet tube,a few inches in front of the throttle body,so no drilling would be needed. just pull soem slack in the wires out of the factory harness,and then plug it in. Done.

Installation:

The following modifications must be made for the intakes to bolt up to a 1987-1993 5.0 Mustang.

1. Lower Intake:

The Explorer intake has no hole for the ACT Sensor. You have two options here: Drill and tap a hole for the sensor or relocate the sensor.

You'll have to swap over all related hardware from your stock intake (temp guage sender, and hard coolant lines.)

The lower intake itself doesn't have a return port for the EGR coolant flow, so you again have two options: Drill and tap for a return port or block off the supply port on the coolant lines.


2. Upper Intake:

At the back of the stock intake, there are three vacuum ports (FPR, Emissions, and vacuum tree). At the back of the Explorer intake there are usually only two,but i have seen them come with all different vaccum setups. Use a plastic vacuum T and split one of the ports to feed both the FPR and emissions,or whatever,just as long as all vac lines are hooked up and holding vacuum


Comaprison of intakes on a dyno(they are all roughly the same)

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In the HP comparrison what other mods were done to the engines? If just the intake will get you in the 326hp range then I'll for sure need 24# injectors with it and the GT40p heads using a 70mm TB and 75mm MAF. Also, Thanks for the info on the swap, we really need it around here. :bigthumbsup
G
good & much needed post....:bigthumbsup
In the HP comparrison what other mods were done to the engines? If just the intake will get you in the 326hp range then I'll for sure need 24# injectors with it and the GT40p heads using a 70mm TB and 75mm MAF. Also, Thanks for the info on the swap, we really need it around here. :bigthumbsup
i have no clue,it didnt say,i just found the pic and posted it to demonstrate the similarities bewteen the 3. i should have mentioned something about it NOT beig anywhere near stock in the original post

im sure its highly modified to be putting down 325 at the wheels..possibly a 347 stroker
(my combo,very similar to what you're building(see sig) put down ~270hp/300tq to the rear wheels)

These intakes alone on a basically stock motor are good for about an extra 10-15rwhp

rlg34750 said:
good & much needed post....:bigthumbsup
thanks,it seemed every time i logged in i was answering the same question about this lol
So it probably wouldn't hurt anything to go 24# injectors as long as I match the MAF especially since I'd like to put a 75 shot of No2 on the car at a later date.
So it probably wouldn't hurt anything to go 24# injectors as long as I match the MAF especially since I'd like to put a 75 shot of No2 on the car at a later date.
it may run a bit on the rich side until you get a custom tune,but its better to be rich than poor..i mean lean :)

you'll be fine,even if you dont throw any juice at it
dont forget about the fuel pump though
are you saying that if you go with 24lb injectors you whould have to upgrade fuel pump?:scratchchin
are you saying that if you go with 24lb injectors you whould have to upgrade fuel pump?:scratchchin
more horsepower requires more fuel,the stock pump is pretty weak. again,injectors do not make horsepower,they support it.
if your combo requires more fuel to make more power,then you should upgrade your pump and injectors as necessary

it is not written in stone that you ned to upgrade your pump if your get bigger injectors,but at some point your stock pump is not going to be able to keep up the supply to match the demand
i havent upgraded my pump yet, seems to be ok ,,but i have'nt got it out of 2nd gear yet though ;). havent got tags :so.
Don't forget about the Explorer 19 pound injectors. For a stockish mustang they are a great upgrade. They are lighter, have a better spraying pattern, and atomizes fuel even better than than the stock mustang injectors. They are a yellow/orange color. I have them on mine which came along with the intake manifold and 65mm TB. It's a performance package that cost me 175 bucks. :D
The pintel pattern an the #19 explorer injectors is something I havent heard anyone talk about in a while....there are 4 expeller holes on the explorer injectors opposed to one on the mustang's.
Much more atomization.....and I didnt pay an arm and a leg for my rebuilt ones.
would a 93 explorer uppper and lower work well with an 88 mustang 5 speed 302? I haven't seen that information listed anywhere..
thanks
would a 93 explorer uppper and lower work well with an 88 mustang 5 speed 302? I haven't seen that information listed anywhere..
thanks
i dont think 1993 Explorers came with 5.0L V-8's...so unless you're going to try and put a 6cyl intake onto your 8cyl car,then my answer would have to be NO
would a 93 explorer uppper and lower work well with an 88 mustang 5 speed 302? I haven't seen that information listed anywhere..
thanks
96 was the first year to offer the v8. and i have a 88 5 speed with ported explorer intake/heads.
Thanks for the post and especially the thumbnail - seeing the numbers so close together made me feel pretty good about my Craigslist purchase of a Cobra intake. Now if I could just find a set of E Street Heads on CL for maybe $400 I'd be in business!
Thanks for the post and especially the thumbnail - seeing the numbers so close together made me feel pretty good about my Craigslist purchase of a Cobra intake. Now if I could just find a set of E Street Heads on CL for maybe $400 I'd be in business!
no problem,keep in mind the #'s shown in that pic are for showing how similar the 3 intakes are to each other when it comes to flow..you wont get 325hp just by putting that intake on a stock motor

good luck on the heads lol..you can find explorer gt40 or gt40p heads from anywhere between $200-$500 though
can someone tell me if this exporer upgrade will work on an 86? its sounds like great HP gains for not alot of $ .
can someone tell me if this exporer upgrade will work on an 86? its sounds like great HP gains for not alot of $ .
yes they fit..you'll gain roughly 10-15 HP at the rear wheels on an otherwise stock motor
need4spd90

just got a whole explorer v8 for my car was wondering how to DIY port heads and intake any help would be great

i also heard that you need ford racing headers for th gt40p heads is this true or will my bbk shortys work
Better know what your are doing before you port heads. You can ruin a set easily.:bigthumbsup
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