88 GM Box Upgrades. Heads, Cam, Exaust

[gadget73]

There is a way to keep the cruise with mass air, but its annoying. You use the Mustang mass air ECM, plus your stock ECM wired to just handle cruise control. Or you convert the cruise to the older stand-alone module. Either way its extra wiring work. The only article I specifically know of that deals with this is here:

http://www.lincolnsonline.com/tech/00077.html

Thats the dual ECM method.

Speed-density can be tuned, but you need to find someone who can do it. it won't deal with boost, but as long as the cam provides reasonable manifold vacuum it can be done. They don't work worth a shit with lumpy cams that don't make vacuum but you don't want to use one of those in something thats a daily driver anyway.

[turbo2256b]

I would port the heads use a cobra mustang intake and a 60 mm tb 19lb injectors. A first year cobra ECU would work with 25lb injectors but think you loose speed control if your year isnt stand alone been too long for me to remember if that year is stand alone.

oTHERWISE JUST GO WITH A ho cam 19# injectors and any of the other posters intake suggestions, porting the heads is still good idea.

[turbo2256b]

Ill see about getting the heads ported, not sure how much it costs. will 19# injectors suffice? or are they necessary to keep the AFR stable?

Does anyone ever use the Explorer ECU? maybe thats a dumb idea...

too manny changes in wiring and such to use

[andrew_mccaffrey]

So the A9P is the one I'll have to go with? And I lose my cruise control with that one right? Not a bad price to pay I suppose if it's just that easy

[pantera77]

Mark VII's were all SD IIRC. Don't spend money on porting e7's, have at it yourself, there's a few DIY guides on them out there. Otherwise leave them stock and save up for some heads that actually flow half decent. 19#'s should be enough, the heads will be the choke point.

Explorers use a completely different ECU, not compatible at all.

You'll still need a mass air computer for a tune anyways.

[andrew_mccaffrey]

At this point it just seems like a tune would be the easier route to go. But I don't really even know where to start with that, even after some reading on here it's still pretty confusing. From what I have read it looks like I would still need to get a new ECU in order to tune it. Is that correct?

[andrew_mccaffrey]

Ill see about getting the heads ported, not sure how much it costs. will 19# injectors suffice? or are they necessary to keep the AFR stable?

Does anyone ever use the Explorer ECU? maybe thats a dumb idea...

[turbo2256b]

i BELIEVE SOME mARK 7s had mass air. You should have those heads ported to work best with that cam. Stock E7 heads only flow about 140 CFM ported by a good shop 220 at .500 lift. With the right intake and TB 65mm would need 25# injectors to work best.

[andrew_mccaffrey]

These will be my cam specs. Advertised Duration (Int/Exh): 276/284, Duration @ .050 (Int/Exh): 210/218, Gross Valve Lift (Int/Exh): .525/.525, LSA/ICL: 112/108. Which is too far past stock to stick with SD, so I was told. I also have the 1.7 cobra roller rockers, a 75mm thottle body and a 75mm upper intake manifold. I am currently debating what to do about the EGR. delete it or have the spacer bored out to 75mm. I have E7 heads that will go on as well.

I had originally read that I needed a mark7 ecu to keep my cruise control and I was only finding limited information surrounding MAF sensor and cruise control.

[pantera77]

I was planning on picking up a mark 7 ECU for the HO firing order. How will this work with regards to the MAF conversion? Can I follow the steps outlined in this thread? http://www.grandmarq.net/vb/showthre...deletion/page2 or is there something else I need to do? if someone could point me in the direction of a thread that covers all of this if there is one that'd be great. I'm sure there is one here I just can't seem to find it.

You need a mass air computer for a mass air swap.

Decide what your doing engine wise first before you worry about a mass air swap.

[andrew_mccaffrey]

I was planning on picking up a mark 7 ECU for the HO firing order. How will this work with regards to the MAF conversion? Can I follow the steps outlined in this thread? http://www.grandmarq.net/vb/showthre...deletion/page2 or is there something else I need to do? if someone could point me in the direction of a thread that covers all of this if there is one that'd be great. I'm sure there is one here I just can't seem to find it.

[Mr.Blue]

In my local yards exploders outnumber HO's 4 to 1 at least..........NEVER any mustangs and a mk vii occasionally pops up..........there are 3 in my local yards as of last friday, admittedly all the intakes are gone but i hadnt been out there in a few months after buying a house so i was just doing a "inventory" check...........one was a '96 so i'm eyeing my 4th. set of junkyard gt40's lol..........moral is just keep your eyes peeled

[andrew_mccaffrey]

if i find a 5.0 explorer ill probably just buy the whole engine. the pick and pull yard will sell an engine with all accessories required to run for $160. Im just i could find a few people who would like some of the stuff off of it. plus maybe it would give me a good reason to road trip somewhere to drop it off. I work schedule is six 12 hr shifts in a row and then eight days off. I can get pretty bored sometimes in eight days.

EDIT: well I guess it'd be like $210 with the core, but still.

[andrew_mccaffrey]

some pics of the project thus far. (i dont know if there is a protocol for posting pics, if im supposed to link to another site, etc. so let me know if i need to change that way i did it)



wrapped most of the exhaust with heat wrap today. picked up the heads from the machine shop yesterday, they shaved .005 off to surface them and are in good shape. while I was there I ran into a guy who happened to have a set a 93 cobra R roller rockers and push rods that he let go for $75 (My Lucky Day!) I haven't put them all on yet, just two, so i could see the difference.

[89TownCar]

Better get to the Explorer fast if you find one..the GT40 intakes are like the first thing to go on them. They're super popular with foxbody guys