[tigerfan2771]

alright so i have a 2002 v6 mustang with the following mods:
4.10 gears,posi-trac differential, dual exhaust, shorty headers, tuner, and drop in filter.

i will have a precision industries stallion torque converter installed for when i go to the track.

the first three gears are no problem and my car flies through them with the mods i have now. once i install the torque converter, it will lock up all the way to the fourth gear. im hoping for mycar to be able to run in the 14's but to do so, i will have to be around 80mph. my car seems to lose power at around 60mph and im afraid that it will fall flat on its face once it hits fourth gear. is there anything that i can do to make more power in this range? ive heard that if i do 1.8 ratio roller rockers, i can reach higher rpm's safely. is this true? and if so could i extend my shift points using the tuner so that the first three gears last longer?

 

[HMUSN]

juice will do it

 

[tigerfan2771]

well besides the obvious power adders. and im trying to avoid a cam swap and new cylinder heads for now as well. im not looking for a lot, maybe just roller rockers and ported upper/lower intake manifolds.

 

[Onemanzu]

you can port the intake parts, upper and lower and throttle body... but your not going to see a ton of power from it... your out of bolt ons... you can do tranny upgrades

 

[GreenFaleen]

shift kit with the torque converter will help stiffen your shifts and a trans break will help with the launch but the best bang for the buck to get top end is nitrous, just have it spray in 4th only if thats where you loose poewr

 

[ESG-642T]

Centrifugal s/c will give you some top end

 

[itschristorres8]

turbo over centri

for top end power ported intakes and heads is your best bet as far as parts that ARENT power addersand you'll need more like 90mph to run respectable 14s

 

[moond0ggie]

ive heard that if i do 1.8 ratio roller rockers, i can reach higher rpm's safely.

Geometry wise, maybe not safely with the 1.8
Use the 1.7 RR to see an improvement when combined with your intake port work.............& try long tube headers as well as another tune.

oh & UD pulleys

 

[tigerfan2771]

you can port the intake parts, upper and lower and throttle body... but your not going to see a ton of power from it... your out of bolt ons... you can do tranny upgrades

well as far as tranny upgrades goes here's my list so far:

precision industries stallion torque converter with a stall speed of 3000rpm
j-mod
tranny cooler

i cant really think of much else for my auto at this point without tearing into the transmission.

 

[tigerfan2771]

turbo over centri

for top end power ported intakes and heads is your best bet as far as parts that ARENT power addersand you'll need more like 90mph to run respectable 14s

alright well i got confused with the mph, but do you think that upper/lower intakes, throttle body, intake spacer, and underdrive pullies would help me out?

 

[itschristorres8]

alright well i got confused with the mph, but do you think that upper/lower intakes, throttle body, intake spacer, and underdrive pullies would help me out?

on the top end yes

 

[tigerfan2771]

on the top end yes

ok and in addition to the pullies freeing up horsepower, do the give smother revving?

 

[itschristorres8]

ok and in addition to the pullies freeing up horsepower, do the give smother revving?

reving will be the same. i doubt you'll notice a difference. i personally did not
as far as reving in nuetral

 

[tigerfan2771]

alright well between your ported upper/lower intakes, intake spacer, 65mm throttle body, and underdrive pullies, what kind of rwhp gains do you think i could see?

 

[itschristorres8]

8rwhp pulleys
ported upper and lower roughly 15rwhp possibly 20 depends really(with 65mmthrottle body)
the spacer is like 5rwhp i think they dyno'd

probably 30rwhp from those depending on your CAI and your exhaust flow

 

[tigerfan2771]

ok well would you recomend halfshafting my current throttle body and porting it to 65mm? or buy one from bbk? ive heard some complaints about theirs whistling.

as for cai, i just dropped in a k&n filter which i heard is just as good as the metal intake. for my exhaust, so far i have bbk shorty headers and flowmaster dual exhaust. i should be getting an h-pipe around the same time.

 

[tigerfan2771]

8rwhp pulleys
ported upper and lower roughly 15rwhp possibly 20 depends really(with 65mmthrottle body)
the spacer is like 5rwhp i think they dyno'd

probably 30rwhp from those depending on your CAI and your exhaust flow

ok and if i leave out the lower intake for now, how much power? 20-25rwhp?
and will the intake spacer match up alright with the upper intake manifold? and when i do the lower at a later time, will they all match up alright?

 

[obdnanr]

wait so, if i get ud pulleys i will need an EVEN Smaller pulley to make boost

 

[itschristorres8]

wait so, if i get ud pulleys i will need an EVEN Smaller pulley to make boost

do not get the pulleys are you car
s/c and ud pulleys is like water and oil

 

[itschristorres8]

ok and if i leave out the lower intake for now, how much power? 20-25rwhp?
and will the intake spacer match up alright with the upper intake manifold? and when i do the lower at a later time, will they all match up alright?

yes they will all match up
theres no telling what gains you'll really see with just a ported upper. the upper & lower together really help out and do its justice together
you'll get some gains for sure but your better off doing the lower as well