3.8L Supercharger on 4.6L???

Thread Tools
 
Search this Thread
 
  #1  
Old 03-26-2008, 01:47 PM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
3.8L Supercharger on 4.6L???

ok my buddy and me were at a junkyard he took the blower off a 3.8L Thunderbird wanting to put it on his 5.0L well he got a new truck and is willing to sell me everything for the blower *blower intercooler* all that for 150 bucks!!! i just want to know if i can even some how mount this up to my 4.6L?? Any help would be very very helpful!! *This isnt a normal roots charger it comes in one side goes threw the blower then goes to the intercooler then into the engine....*
 
  #2  
Old 03-26-2008, 01:55 PM
joshmac4.6's Avatar
Senior Member
Join Date: Feb 2008
Location: Western NC
Posts: 1,733
Likes: 0
Received 0 Likes on 0 Posts
Its the supercharger that is sold by troyer, the M90, but IMO thats a little small for a v8, even if it is just 281cid.
 
  #3  
Old 03-26-2008, 01:59 PM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
im not looking to make massive PSI or HP i just want a lil more pep off the line and the whine
 
  #4  
Old 03-26-2008, 02:04 PM
joshmac4.6's Avatar
Senior Member
Join Date: Feb 2008
Location: Western NC
Posts: 1,733
Likes: 0
Received 0 Likes on 0 Posts
Oh yea, there is nothing like the whine of a eaton, but If you could get the lower intake from somewhere, I would think it would work just fine, or if you are "crafty" make a intake, but that takes soooo much time and effort.
 
  #5  
Old 03-26-2008, 02:07 PM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
lol yeah ill just get some flex pipe that'll be an easy intake to make i donno theres lots of room infront of my engine with E-fans so i can figure somthing out. How much PSI did those things make from the factory?
 
  #6  
Old 03-26-2008, 02:13 PM
joshmac4.6's Avatar
Senior Member
Join Date: Feb 2008
Location: Western NC
Posts: 1,733
Likes: 0
Received 0 Likes on 0 Posts
From what i've seen it was 12 psi stock, the allen enginering setup advertises a 80rwhp gain at 5.5psi.
 
  #7  
Old 03-26-2008, 02:30 PM
shifty_85's Avatar
Senior Member
Thread Starter
Join Date: Oct 2007
Location: farmington hills, MI
Posts: 3,439
Likes: 0
Received 0 Likes on 0 Posts
12 PSI stock? thats a lil bit too much for my 4.6L its got stock insides...and id like to keep them...well inside would it still make that much PSI on my 4.6L? im looking to make about 6-8PSI
 
  #8  
Old 03-26-2008, 02:35 PM
joshmac4.6's Avatar
Senior Member
Join Date: Feb 2008
Location: Western NC
Posts: 1,733
Likes: 0
Received 0 Likes on 0 Posts
You will have to find out the diameter of the upper pulley and the lower pulley, I would imagine the upper is very small and the lower is medium on the super coupe. The CR of the SC was 8.2:1, so 12lbs will be a little heavy for your wants. It will take some work, and the hardest part will be finding a lower to bolt onto the heads. You could always buy ported PI heads and cams, and make the same power you would off of 8 psi, but then you won't have the whine.
 
  #9  
Old 03-26-2008, 05:12 PM
stoffer's Avatar
Senior Member


Join Date: Apr 2004
Location: missing Texas...
Posts: 13,649
Received 73 Likes on 66 Posts
Originally Posted by shifty_85
12 PSI stock? thats a lil bit too much for my 4.6L its got stock insides...and id like to keep them...well inside would it still make that much PSI on my 4.6L? im looking to make about 6-8PSI
many people have 12psi on stock engines, a good tune and innercooler is the key...

now back to your original question, you need a lower intake manifold that will fit your trucks engine in order to fit the swap, along with many other items, such as larger fuel pump, larger MAF, etc
 
  #10  
Old 03-29-2008, 10:47 AM
Shane Brown's Avatar
Member
Join Date: Dec 2004
Location: Lethbridge, Alberta, Canada
Posts: 61
Likes: 0
Received 1 Like on 1 Post
The blower off a sc tbird that he is talking about is different than the lightining/ cobra. it is mounted in a similar location, but the blower does not go directly into the intake manifold. Instead, it goes to a air to air intercooler in front of the rad, then back to the intake.

The big problem will be finding somewhere to mount it, keeping the pulley in line with the other pulleys, and then plumming to the intercooler and back to the throttle body.

If the blower is running at the same speed as the 3.8, it will produce less boost on the 4.6 as it will use more air. More air means less restriction for the pump. Boost or pressure is is created by resistance to flow.

To get the boost that you want will just be a matter of finding the right pulley combo. The only thing you want to be careful of is not spinning the blower faster than it was designed to run at. You MUST get it tuned to run and you will need bigger injectors and a MAF.
 
  #11  
Old 03-29-2008, 04:01 PM
Jordan not Mike's Avatar
Senior Member
Join Date: Jul 2004
Location: The LBC (Long Beach, CA)
Posts: 1,714
Likes: 0
Received 0 Likes on 0 Posts
On a 4.6, the M90 would be a good blower for lower boost pressure. IMHO I think an M90 at 12psi will be overdriven and will have some pretty high charge temps.
 
  #12  
Old 11-30-2008, 05:46 PM
97f150xl11's Avatar
Member
Join Date: Oct 2008
Location: Denver CO
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Has anybody figured anything else on this one. I also have a 97 4.6 2v and the exact same 3.8 supercharger sitting in the garage. Would love even another 40 horse if I could make it work.
 
  #13  
Old 12-01-2008, 12:44 AM
nordvik72's Avatar
Senior Member
Join Date: Jan 2007
Location: Glen burnie MD
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by joshmac4.6
Its the supercharger that is sold by troyer, the M90, but IMO thats a little small for a v8, even if it is just 281cid.
Id like to know how its to small for a v8 when the Roush charger in some of the 4.6L 2001-04 mustangs are the exact same size!

Other than that i would re-sell your tbird m90 for a m112 lightning/harley s/c an manifold and have it cut and re-welded for your 4.6 and you would have an awsome setup with plenty of parts you could use strait off a lightning truck. After looking at the tbird m90 pics on ebay it dang near gave me a head ache trying to figure out if it was even possible lol.
 

Last edited by nordvik72; 12-01-2008 at 12:58 AM.



Quick Reply: 3.8L Supercharger on 4.6L???



All times are GMT -4. The time now is 01:17 AM.