supercharged 4.6
New User
Joined: Aug 2003
Posts: 23
Likes: 0
From: Rancho Cucamonga
supercharged 4.6
I was in the Jegs website and a Ford Racing 5.8L/351 4V - 250 HP Heavy Duty motor was advertised for under $3,000. That's less than a supercharger. The cost to install the motor and I don't know if the parts, such as the throttle body, are interchangeable with the 4.6L may end up costing quite a bit more.
Any mechanics out their that could provide me with some info. Please keep in mind that I am looking for power for towing not necessarily for daily driving. Also the 91+ octane required for a supercharger is another expense I really don't need here in California.
Thanks
Any mechanics out their that could provide me with some info. Please keep in mind that I am looking for power for towing not necessarily for daily driving. Also the 91+ octane required for a supercharger is another expense I really don't need here in California.
Thanks
Freshman User
Joined: Apr 2003
Posts: 45
Likes: 0
From: Lehigh Acres, FL
supercharged 4.6
I too looked at that 5.8L 351 in the JEGS catalog. It'll take a bit to swap these engines as they're two totally different block styles. I'm leaning toward the supercharger as the way to go.
Senior User
Joined: Jan 2003
Posts: 135
Likes: 2
From: hayward usa
supercharged 4.6
Have done Ford engine swaps for many years guys for my own enjoyment.. I dont think putting a 351w in where the 4.6 was would be a very fun swap..it would turn into such a headache you would be frustrated as hell..I'm sure it can be done..but I would highly discourage it due to its complexity..Stck with the bolt ons..And if you want real power,go for the supercharger.Its the only bolt on that REALLY works wonders..Allen engineerings eaton blower would be my choice for depedable big block like performance.Theres a reason Ford chooses Eaton blowers for the HD and the Lightning.Dependable performance!! They spent hours and hours and dollars researching it.I think it would be smart to follow ther reasoning for choosing this route for more performance...Just my 2 cents worth..
Senior User
Joined: Jan 2003
Posts: 135
Likes: 2
From: hayward usa
supercharged 4.6
To learn something about supercharging Fords..go to this link.http://home.att.net/~jroal/ He understands forced induction very well.Be sure to read all the links to educate yourself well.I keep it in my favorites just in case...
Freshman User
Joined: Apr 2003
Posts: 45
Likes: 0
From: Lehigh Acres, FL
supercharged 4.6
I've been doing a bit of research, and found a supercharger that easier on the budget. The website is http://proficientperformance.com/Mer...&Store_Code=PP
If anybody knows of this products performance, please let us know of your experience.
If anybody knows of this products performance, please let us know of your experience.
Posting Guru
Joined: May 2002
Posts: 1,673
Likes: 0
From: Chicago Area
supercharged 4.6
Personally, I'd feel better with the Eaton type. That's what Ford uses on the Lightning and HD. Also, GM uses it on the Supercharged 3.8 Buick, which I've run about 260,000 miles on!
This could be fine though. I wish I were able to supercharge my Ford! Please post your experience if you do it.
This could be fine though. I wish I were able to supercharge my Ford! Please post your experience if you do it.
Elder User
Joined: Jun 2002
Posts: 678
Likes: 3
From: Dallas, Texas
supercharged 4.6
Originally posted by MrBSS
Turbochargers become a lot more complicated as a retrofit, and they generally are for high RPM horsepower as opposed to low RPM torque.
Turbochargers become a lot more complicated as a retrofit, and they generally are for high RPM horsepower as opposed to low RPM torque.
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Elder User
Joined: Jun 2002
Posts: 678
Likes: 3
From: Dallas, Texas
supercharged 4.6
Originally posted by NASCARTruckDude
Would a turbo or twin turbo perform just as well as a supercharger. I know turbo's can have what they call turbolag but superchargers can cause parasitic loss to the motor.
Do they even make turbos for F150's?
Which one is better in your opinion?
Chris
Would a turbo or twin turbo perform just as well as a supercharger. I know turbo's can have what they call turbolag but superchargers can cause parasitic loss to the motor.
Do they even make turbos for F150's?
Which one is better in your opinion?
Chris
Last edited by Jimbo302; Aug 27, 2003 at 07:31 PM.
Posting Guru
Joined: May 2002
Posts: 1,673
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From: Chicago Area
supercharged 4.6
Well they both do the same thing; the difference is in how they are powered. A belt driven supercharger must run at a fixed ratio to the engine RPM, while the exhaust driven turbocharger depends on the exhaust pressure and turbine design.
The major design problem with turbochargers is in keeping the driven turbine (which is exposed to the hot exhaust) lubricated and turning freely at high RPM. Especially if shut down after a hard run, its very hard on the oil.
Not to say turbocharging couldn't be done, but I think you'll find supercharging is easier, more reliable, and more available.
The major design problem with turbochargers is in keeping the driven turbine (which is exposed to the hot exhaust) lubricated and turning freely at high RPM. Especially if shut down after a hard run, its very hard on the oil.
Not to say turbocharging couldn't be done, but I think you'll find supercharging is easier, more reliable, and more available.
Elder User
Joined: Jun 2002
Posts: 678
Likes: 3
From: Dallas, Texas
supercharged 4.6
Originally posted by MrBSS
The major design problem with turbochargers is in keeping the driven turbine (which is exposed to the hot exhaust) lubricated and turning freely at high RPM. Especially if shut down after a hard run, its very hard on the oil.
The major design problem with turbochargers is in keeping the driven turbine (which is exposed to the hot exhaust) lubricated and turning freely at high RPM. Especially if shut down after a hard run, its very hard on the oil.
True that, for a novice or bolt-on type of person, the blower is probably the easiest way to go.
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