Thestiffone
Member
Have Ben curious about this for a while now but would a stock lighting supercharger fit my 99 4.6 expy from a 99 lighting. If not recommendations on good choice for supercharging.
Superchargers
- Thread starter Thestiffone
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daoud elmassri
Full Access Members
Yes it will u have to do alot more to it thou . If u go with a eaton or Roush or edelbrock prices very . How many miles do u have on your truck now.
The lightning supercharger will not work with the 4.6. The intake/valley is much wider on the 5.4 vs 4.6 so it will not physically fit.
This question has been asked many times here and the only supercharger assembly I have seen currently listed online specifically for 1st gen 4.6 expeditions is from pro-charger.
ProCharger Truck Supchargers
Other manufacturers made kits at one time but they all seemed to have dropped them likely due to low demand.
You may be able to adapt a 2v 4.6 mustang kit to your expy so you might do some research there. I would suggest calling the manufacturer of whatever kit to ask what the differences may be. I would imagine you may be on your own as far as a tune/program is concerned if necessary.
This question has been asked many times here and the only supercharger assembly I have seen currently listed online specifically for 1st gen 4.6 expeditions is from pro-charger.
ProCharger Truck Supchargers
Other manufacturers made kits at one time but they all seemed to have dropped them likely due to low demand.
You may be able to adapt a 2v 4.6 mustang kit to your expy so you might do some research there. I would suggest calling the manufacturer of whatever kit to ask what the differences may be. I would imagine you may be on your own as far as a tune/program is concerned if necessary.
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daoud elmassri
Full Access Members
I beg a difrence yes a eton supercharger will fit there is a after market plates that bolt to the heads so that u can install the supercharger to .M.M.R makes the adapter plates go to tbere web site .I was going to do this before I bot my doner truck with the 5.4 .
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Please provide a link to the item you are describing because I believe you are incorrect. Yes they sell adapter plates but nothing for the application in question. I have seen 4.6 intake to 5.4 adapter plates but not the other way around.
I could not find one to mount a lightning supercharger assembly to a 4.6 2v motor on their website so for the hell of it I called MMR and asked. They told me they do not sell such an item. I have also never seen a case where this swap has been done. Many lightning engines in mustangs but all are the 5.4.
I would certainly apologize if they do but my research says otherwise.
The photo on the left gives you an idea on the difference in size of the valley between a 5.4 and 4.6.
My 5.4 valley with the heads installed.
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Yudaman
Full Access Members
Correct me if I am wrong, but wouldn't a supercharged 4.6 and up being slightly more HP than a 5.4?
I would think time and money would be better spent swapping the 4.6 for a 5.4 then tossing the SC on it. The good news, all of the Lightning stuff would then be available!
Or, do a v-10 conversion. Personally I would rather do the v-10 swap. Just the thought of a v-10 in my Expy gives me wood.
I would think time and money would be better spent swapping the 4.6 for a 5.4 then tossing the SC on it. The good news, all of the Lightning stuff would then be available!
Or, do a v-10 conversion. Personally I would rather do the v-10 swap. Just the thought of a v-10 in my Expy gives me wood.
Expyguru
Full Access Members
Maybe this guy is thinking of the cobra Eaton even though it wont fit either lol. Just pull it and put a L motor in and call her good.
daoud elmassri
Full Access Members
No I am positive the pacer plates that MMR make fit a 4.6 . What do u want someone to do all your work for u u need to do the same as I did do a lot of reading and a lot of research before u make a decision . No one helped me . I fond a doner truck amd pulled it all apart sold of most of the parts I sid not need . It came with 5.4 had 31, 000 miles on it bot it for 1, 000 dollars . Then I took my truck apart I took out the 4.6 it 157, 000 miles on her no compression . I installed 5.4 4WR transmission & Transfercase . Front&rear excel . I do now what I am talking a out becquse J& M Motor Sport r the ones who told me abot MMR plates they did not now the name so I went to computer q d started my search . Do your own re search u wont go wrong .
01yellerCobra
Full Access Members
What's the difference between the L motor and an Expy motor?
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superexpy
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The more i read the more i am losing IQ points.....
5.4 PI motors from the heads down are essentially the same with the following exceptions.
All lightnings came with forged crankshafts. Expy's came with cast cranks but I understand at some point they installed forged cranks they had on hand so could not tell you which may or may not have them.
Lightnings had forged lower compression pistons. Expy have higher compression hypereutectic pistons. Forged pistons are far more forgiving but you can run tighter tolerances with the hyper pistons. So typically you only see forged pistons in boosted applications.
Lightnings come with a 6 bolt torque converter thus the flex plate has 6 holes to match. Expy's have 4 bolt converters.
I understand there may be slight differences in the timing cover but not sure what they may be. I had no problem mounting all the lighting hardware on mine.
The 5.4 motors weak link are the powdered metal connecting rods. Beyond 450 ish rwhp (this is well over 500hp at the crank) they have been known to exit the block. Connecting rods should be the first thing you address if you plan to make serious power and or rebuild the block with boost in mind.
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01yellerCobra
Full Access Members
Ok. I was told years ago the Lightning motors weren't forged at all. I was going to say if that's the case what's the point if dropping in a Lightning engine if it's the same as an Expy engine.
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Expyguru
Full Access Members
I got a small headache from reading there post. Cant argue with stupid.
Tom you are way to nice lol.
Expyguru
Full Access Members
Dude you need to do a lot more research before arguing with guys that have the L swap. The plates you are talking about adapt a 4.6 intake to a 5.4 block. So please don't post until you school yourself some. Or you will be made fun of.
Thestiffone
Member
Well since the posting I am going to have to sell my expy thank you for all the help and if it came to it I would've swapped to a lighting motor or a5.4.
sgtowing
Supporting Members
Yudaman
Full Access Members
Quoted for WTF purposes
Expyguru
Full Access Members
Did we run him off in one thread lol.
Yudaman
Full Access Members
More like kid syndrome. "ooh, i wanna do all this cool stuff to my truck! Wait, I can't afford gas let alone cool stuff. I am going to sell it and buy a Geo."
Just to be clear, daoud has completed the lightning conversion himself as well. But as he said himself he did it with a 5.4 expedition donor drivetrain. I think he had every intention to install the lightning setup on the 4.6 and believed it was possible though it obviously never happened.
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