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Old Mar 19, 2006 | 10:57 PM
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Crazy swap idea...

I was wondering, what would it take to swap out my 5.0L in my Bronco (87) for a 5.4L? A 03 or 04 5.4L.

I assume I'd need a new tranny right? Would that mean basically I'd need to replace the entire drive line, transfer case, rear end etc?
 
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Old Mar 19, 2006 | 11:53 PM
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Better to massage a 351w. 5.4 might be too wide to fit without surgery of some kind. And yes, you will need at least the trans that fits the 5.4 motor.
 
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Old Mar 20, 2006 | 09:27 AM
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The reason I'd like the 5.4L is for the supercharger I'd like to put in it. If you think about it, the 5.4L is small than the 351w, so in theory shouldn't it fit?
 
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Old Mar 20, 2006 | 02:16 PM
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well what think he ment was that the 5.4 might be wider from each side of the engine for waht ever reason than the 351
 
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Old Mar 20, 2006 | 02:40 PM
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the 5.4 is a bigger motor then the 5.8 due to being overhead camed ect... there is a guy that put on into a 78 bronco along with the dash from the same wrecked truck. looks sweet but it took him at least 6mnths to pull it off. i know its floating around the net so try a search.

but like said above going to a 5.8 would be the easier option, then supercharging that with KenneBell which is vary similar to what the 5.4's run would get you the same result
 
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Old Mar 20, 2006 | 02:44 PM
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Well I have a 5.0 in there that needs rebuilding, what do you think of Supercharging it?
 
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Old Mar 20, 2006 | 03:07 PM
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Find an early 90s Lightning 351. Supercharge that. Feel good about it.
 
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Old Mar 20, 2006 | 03:30 PM
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Okay, but lets same I'm trying to stay on budget, can I/is it a good idea to supercharge my 5.0?
 
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Old Mar 20, 2006 | 03:40 PM
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yes you can supercharg your 5.0 . i would only run a kennebell version for this application. expect to pay about $3000+ for it though.

whats your budget and goals for your bronco. this will help us help you.
 
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Old Mar 20, 2006 | 10:37 PM
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Well I'm obviously not looking for something that can do 11s or anything like that. I'd like to have some nice take offs, but also I've been thinking about getting into off roading. I've never taken the bronco out, but I went in a friends jeep the other day, and it was pretty fun.

As far as reasons for supercharging? More of a reason for more horsepower, and because i can, I guess. The reason I mentioned the 5.4, is because I'd heard good things about superchargers and these engines.
 
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Old Mar 21, 2006 | 02:35 AM
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Any motor can be built for a supercharger... you really can't just slap a supercharger on a motor and call it good... it'll last for a while before you blow a head gasket or crack the exhaust manifolds... The realtively low compression of the stock 5.0 in your truck is ideal for the supercharger, but the cast pistons used in that motor probably won't take that abuse for very long...

I know there are many people that do just slap on a supercharger, but if your going to go through all that work, why not do it right the first time?
 
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Old Mar 21, 2006 | 10:27 AM
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Find a donor 351w so it will bolt into your engine bay with little/no mods. Build it up to be a nice motor leaning toward the torque side for your large vehicle. It will run nice all the time and have good trail manners too. When it's done, pull the 5.0 and drop in the 351 with it's associated components. Just currious to know, what $$ is in your budget?

My $.02's --Mike
 
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Old Mar 21, 2006 | 01:39 PM
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Well whatever I do, it'll be slow coming. I'd like to not break more than $2000.
 
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Old Mar 21, 2006 | 06:13 PM
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Depending on how bad the cylinders and heads are you can have ~$2k in just the machine shop work. This is before new pistons, and cam, lifters, rings, etc. When we looked at rebuilding the V6 in my malibu it was going to cost us $800 just to bore the block.
 
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Old Mar 21, 2006 | 08:01 PM
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Oh for the entire thing, $5000. I was meaning $2000 for the supercharger.
 
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