Click Here -> Please Consider Making a PayPal Contribution to the FordSix Forum!
2019 Contributors:
NJwpod, 1strodeo, mightynorseman, maxtrux, 6d7coupe, broncr, Phase3, 68Flareside240, bmbm40,
mustang6, WorldChampGramp, justintendo, BigBlue94, ags290, motorsickle1130, Rooster, ousooner919, ethanperry
rzcrisis, DoctorC, jamyers, Motorboy, fastpat, Silverback280, chad


<<< New Site Update >>>

4.9 and 4.0

Moderator: Mod Squad

Hampton
Registered User
Posts: 8
Joined: Sun May 17, 2009 7:43 pm

4.9 and 4.0

Post #1 by Hampton » Thu May 28, 2009 9:12 pm

Has any one tried or even heard of taking the efi system off of a 4.0 V6 motor an installing it on a 4.9 I6. If possible how much trouble would it be? I keep reading about how limiting the computer is on the 4.9 is the 4.0 unit the same or can you add a preformance chip?

User avatar
StrangeRanger
VIP Member
Posts: 5789
Joined: Fri Nov 08, 2002 5:54 pm
Location: Copley, OH

Re: 4.9 and 4.0

Post #2 by StrangeRanger » Thu May 28, 2009 9:29 pm

The difference is in the programming and it is huge.
The 4.0 uses a crank sensor to trigger the EFI and the spark, the 4.9 does not. The 4.0 has a waste-spark ignition strategy, the 49 does not. There are probably many other differences but those two should be enough to make you think about how you'd adapt the 4.0 to the 4.9.
1996 F-150 (tow missile)
1993 Mustang 5.0 (hot rod and auto-x monster)
1982 Tiga Formula Ford (SCCA racecar)
2013 Hyundai Elantra Coupe (daily driver)

User avatar
optikal illushun
Registered User
Posts: 797
Joined: Sat Nov 30, 2002 3:21 am
Location: Coal Region, Pa
Contact:

Re: 4.9 and 4.0

Post #3 by optikal illushun » Thu May 28, 2009 9:36 pm

what about a TBI system from a GM?
1993 F-150 XLT 4x4 RCLB
Modded 300/Built E4OD/D44 SAS
- Crane coil/Taylor wires/fresh tune up
- Crane cam w/ steel timing gears
- Hedman headers
- Ported intake(s)
- Some kinda exhaust

American Thunder
Registered User
Posts: 336
Joined: Sun Feb 17, 2008 3:35 pm
Location: Upstate, NY

Re: 4.9 and 4.0

Post #4 by American Thunder » Fri May 29, 2009 5:28 pm

I was thinking more along the lines of using a 4.0 Jeep inline 6 EFI setup, if anything.
1977 530hp 302 Mustang II videos:
Smokeshow at 8000 rpm
0-90 mph speedometer view

1983 4x4 Bronco - '95 300 converted to carb, 5-speed, 3.55 gears and 9" rear.

rikard
Registered User
Posts: 159
Joined: Thu Jun 07, 2007 11:53 pm
Location: North Reading Mass

Re: 4.9 and 4.0

Post #5 by rikard » Sun May 31, 2009 1:26 am

Jeep used a couple of different EFI systems on the 4.0. The first one was called a Renix system sourced by AMC from France and the later one was a Chrysler system after the merger. The 4.9 Ford EFI system is much easier to work on and trouble shoot IMHO than the Jeep.
The GM TBI is adaptable to many engines but you should use an after market 2v intake and EFI headers or the most benefit.
YMMV
rikard
"If women don't find you handsome they should find you handy" Red Green
Now-95 Black F150 XLT SC 300 5 Speed " Nelly Belle"
Past I6s
250 Chrysler Spitfire, 194, 250 Chevy, 223 Ford, 242,258 AMC, 225 Slant 6, 330 REO GC

User avatar
80broncoman
Global Moderator
Posts: 3315
Joined: Sat Oct 18, 2003 10:49 pm
Location: The Great state of Ohio!!

Re: 4.9 and 4.0

Post #6 by 80broncoman » Mon Jun 01, 2009 10:10 pm

the later 4.0L jeep efi system is pretty simple. IIRC starting in 99 they no longer used a EGR at all.
Renix=bad the last year for the Renix system was 94 I belive steer clear of the renix system at all cost.
The newer stuff worked much better. It also used a crank trigger.
OAPSE Union Member

Real men don't wear Bowties
When it come to engines If its .001 loose nobody knows, But if its .001 too tight EVERYBODY KNOWS!!
80 bronco FUV (farm utility vehicle)300 T-18 3.50s EFI head, offy C dual plenum, 500 edel carb, 1.7 roller rockers, Crane 260 cam EFI Exh

Who is online

Users browsing this forum: MechRick, pmuller9 and 34 guests