4v 5.0
01-30-2009, 12:13 AM
#12
6th Gear Member
Join Date: Nov 2004
Location: Tennessee
Posts: 7,797
if you do it proper...
4.6 - ~3-5g's for the SB give or take depending on what the HP limit is...
5.4 - i think are upwards of 5+g's for the SB
intake - ~3g's
cams - ~1-1,500
heads (you need to buy 4v heads first..pref. 03/04) - port jobs are ~1g
*dont be suprised if you spend close or over 10g's with either the 4.6 or 5.4....*
almost positive:
+you will need a t-56 or 3650 trans (dont know what 05+ gt's come with)
+a ECU from a cobra
+diffrent motor mounts
+small changes in wiring possibly
+a new gauge cluster for the 8k+ rev limit (lol)
4.6 - ~3-5g's for the SB give or take depending on what the HP limit is...
5.4 - i think are upwards of 5+g's for the SB
intake - ~3g's
cams - ~1-1,500
heads (you need to buy 4v heads first..pref. 03/04) - port jobs are ~1g
*dont be suprised if you spend close or over 10g's with either the 4.6 or 5.4....*
almost positive:
+you will need a t-56 or 3650 trans (dont know what 05+ gt's come with)
+a ECU from a cobra
+diffrent motor mounts
+small changes in wiring possibly
+a new gauge cluster for the 8k+ rev limit (lol)
That's true. That's also scary that I wanted to do something like this about 6 months ago. Glad I saw the light.
If you guys only knew what you could do with a $10K SBF.
01-30-2009, 12:17 AM
#13
5th Gear Member
Join Date: Apr 2008
Location: Memphis
Posts: 2,377
Haha, I've seen that light, just have fun playing with mod motors for some reason. Building a 408 stroker for a different car right now.
01-30-2009, 09:37 AM
#16
2nd Gear Member
Join Date: Jul 2007
Location: PA
Posts: 242
01-30-2009, 11:38 AM
#17
Banned
Join Date: May 2007
Location:
Posts: 4,064
one company makes an "R" version of the block, Im trying to find it, but its basically a big bore 5.4 (to 6.0L). i saw a vid of guy who had that setup with 4v heads, custom intake (switched to twin carb) and it was running bottom 9's N/A... pretty nasty
01-30-2009, 11:44 AM
#18
6th Gear Member
Join Date: Nov 2004
Location: Tennessee
Posts: 7,797
I have s soft spot for mod motors myself. Hopefully always will. They just aren't very cost effective. Hopefully I'll get to build one myself someday.
01-30-2009, 11:44 AM
#19
6th Gear Member
Join Date: Nov 2004
Location: Tennessee
Posts: 7,797
I have a soft spot for mod motors myself. Hopefully always will. They just aren't very cost effective. Hopefully I'll get to build one myself someday.
01-30-2009, 03:01 PM
#20
2nd Gear Member
Thread Starter
Join Date: Sep 2007
Posts: 392
BOTH N/A:
a 4.6 4v will make 400rwhp+ with the right things
a 5.4 4v i have been told will see 550-600+rwhp with the right things
and i believe the 5.4's are bored to there max, to go any bigger i think you need to have it sleeved....
o and yea it will prolly cost more then what you paid for your car to do either one.....
a 4.6 4v will make 400rwhp+ with the right things
a 5.4 4v i have been told will see 550-600+rwhp with the right things
and i believe the 5.4's are bored to there max, to go any bigger i think you need to have it sleeved....
o and yea it will prolly cost more then what you paid for your car to do either one.....
I've seen a full bolt on 99 cobra with heads and cams and a tune by JBA make 363rwhp.
What other right things would he need?
Last edited by schmallz; 01-30-2009 at 03:08 PM.