explorer motor into speed density car

i have asked this question in a previous topic but i think i need to clearify a little. i have a 64 galaxie i swapped a 5.0HO aod in. it is driven daily and runs good but i aquired a ford reman gt 40 long block, i guess from an explorer, part # F77Z-6006-arm. i would like to put it in the gal but need to know if it will work well with the sefi untill i swap to mass air. is the firing order the same as the ho, the reman has a roller cam in it and how does it compare to the other cams ford offers or the one in the HO sefi motor. the sefi motor is out of a 89 markVII. how about the aftermarket shorty headres on the sefi motor will they work with the gt 40 motor, do i need only angled wires to make them work. ill probobly have more questions now that im ending so any added info would be appreciated. thanks in advance chad[img]/phpBB/images/smiles/icon_spin.gif[/img]

Will it run ? Yes

Will it run well ? No

Will it run well enough to drive ? Not sure, but likely not

The Explorer cam is a bit on the smallish side but I do not know the specifications. It may work allright in a heavy car like a Galaxie but something from Comp Cams ( small XE cam ) or Crane would undoubtably work better depending on your axle ratio.

Most shorty headers will work fine if the heads are NOT the GT40P. If they ARE GT40P you need headers specifically for those heads. Central Coast Mustang sells them I believe.....

The firing order is the same.

Not sure about the wire question.....

You really should convert to mass air for both driveability and power, it's not that difficult.

I hope I've helped.

[addsig]

I'm gonna disagree with C7Z....

With the smaller cam in the GT40 engine I don't think it will be a problem... As long as the engine will idle 17"-18" vac, speed densety is generally happy. I bought another modded 5.0 T-Bird with a stock HO cam, Windsor Jr heads, full 2 1/2 exaust, 65mm t-body, etc. It ran fine on a '88 Stang SD EEC. A lot of folkes damn the speed densety but it really ain't bad on a stock engine. In fact the '87-'88 SD Stangs were actually a little stronger(stock) than the '89-'93 MAF cars... When big mods come into play then yes you want Mass Air...
[addsig]

converted to mass air and installed the gt 40. runs great, all but for a little more top end valve train noise than i would like. it is a new ford reman. explorer motor. seems to run strong although still a little tight. previous 5.0 ho from a mark vii did seem to wind out a little better on the freeway but the gt 40 is new. it has been punched .030 and later down the road a cam swap is in order but for now im going to let it break in like it is. any one have a cure to quiet down the top end noise. i put some crane cams roller inserts in the rockers till i get a set of roller rockers. what about putting a set of 1.7 rockers in with the explorer cam? as for the headers, i used a set of flowtechs and had to slightly massage one runner and installed the plugs before the headres as well as a set of msd 90 degree plug wires. i do think i can change the plugs with a little modification to a plug socket. [img]/phpBB/images/smiles/icon_tup.gif[/img]

Well, since you converted to mass air, the mass air vs. speed density question is moot. I have nothing against speed density systems except that they can NOT adapt to changes like a mass air system can. PERIOD. A 302 with GT40 heads and intake is a far cry from stock.

The 1.7 rockers will gain you a little lift, but you really need a cam with more duration if you want to pick up power. The Explorer cam really isn't even as good as the stock Thunderbird HO cam you used to use.

If you are going to swap out the cam, I'd consider one of the smaller Comp Cams XE series like the XE270HR or the XE264HR

Converting to adjustable rockers should cure the valvetrain noise.

[addsig]

can i use the original cast aluminum valve covers with the adjustable rockers or do i need to get new valve covers?

I had to remove the baffles and their mounts on mine... Nothing a little time with the grinder won't fix..

_________________
1988 Turbo Coupe...Trick Flow 5.0... AOD... 3.73s





<font size=-1>[ This Message was edited by: TurboCoupe50 on 12/22/05 11:04am ]</font>

Hey Taylored, when you swapped out to Mass Air, did you change the wire harness, or just re-pin the SD harness? If you re-pinned, how did it go?
thanks, Ron

i just repinned the sd harness. got the info from the internet and took my time. not too hard as there is alot of good info out there. i got the meter, sensor and plug from an early 4.6L crown vic. works great. let me know if you need any help. chad[img]/phpBB/images/smiles/icon_tup.gif[/img][img]/phpBB/images/smiles/icon_tup.gif[/img][img]/phpBB/images/smiles/icon_tup.gif[/img]

Thanks Taylored, Yes I'd appreciate some help with it. Some of the info I have is a little confusing. One source says I'll have 4 wires to pull out, just tape them up so they don't short against anything, don't use those, but doesn't say which wires to pull out. Another source just says splice the MAF into existing wires at certain pins, doesn't say to pull some out, not to be used... confusing. They seem to agree on the pins for the MAF, 4 wires, red blue, green, black. Splicing in the MAF makes more since after looking at the wire diagram as does moving some pins to other locations. Any help would be appreciated as I'd like to make the conversion while I've got a day off. Your instructions and experience would be helpful too!!! Thanks, Ron