Most HP from stock 03 w/more boost

tbird88tbo · October 12th, 2009, 10:19 PM

Does anybody have any dyno number from just doing a supercharger swap and adding boost to an otherwise stock 03 cobra motor. What is the max hp i can exspect to make on pump gas without doing cams and porting my heads. I would like to make around 600 to the wheels.

Right now my setup consists of a stock v block with 03 heads and cams. I do have a set of 98 cobra cams that i heard were "more agressive" but i dont have any specs to go by. I am running an aftercooled vortech v2 si trim with the stock pully. The most boost i see is about 7psi @ around 6.5k rpm. I havent had it tuned yet so i dont know what it is making to the wheels. I would like to get a set of bigger injectors and a pully and see if i can make close to 600 at the wheels. Vortech claims that this supercharger is capible of 650hp (flywheel im guessing). But if i had to i can upgrade to a t trim which should do 750hp. However, before any of that i am going to rebuild the bottom end with forged parts. I really dont want to spend the money on head work and cams if i can acomplish my goal with stock heads and cams.

98Cobra_sleeper · October 12th, 2009, 10:25 PM

well, i have a 98 cobra. i had a V2 SCI trim makin 15lbs of boost with 42lb injectors and no intercooler and i made 460 to the wheels UNTUNED. the tuner said i had 40more hp in it if i got it tuned, so im sayin that YES, it can be done. I was told i could make about 550ish with 60lb injectors, longtubes, and an intercooler and o/r xpipe swapped in.

tbird88tbo · October 12th, 2009, 10:31 PM

That makes it sound promissing. I already have headers and an xpipe.

98Cobra_sleeper · October 12th, 2009, 10:43 PM

yeah, if you have the cams, swap em in. get bigger injectors, and probably upgrade to the t-trim. you wont have to run that much more boost, maybe 12#'s with that t-trim to see your goal. make sure you have a good enough fuel supply for that much hp

wraitherx · October 12th, 2009, 11:44 PM

the stock internals will handle that power (600) if youve got a Termi shortblock. they come fully forged with manley rods and pistons and forged crank. if you didnt already know.

tbird88tbo · October 13th, 2009, 07:35 PM

I wish this was a termi shortblock, but it came from a mark 8. I kinda put it together in a rush so i could drive it some this summer, but now that winter is on the way i will be pulling it back out and doing it right.

Smoothgrandmama · October 13th, 2009, 08:05 PM

03 cobra's can make in excess of 700whp with the right blower and enough psi

October 12th, 2009, 10:19 PM	#1
tbird88tbo Regular 1998 Mustang Base Model Join Date: Feb 2009 Posts: 109 iTrader: 0 reviews	Most HP from stock 03 w/more boost Does anybody have any dyno number from just doing a supercharger swap and adding boost to an otherwise stock 03 cobra motor. What is the max hp i can exspect to make on pump gas without doing cams and porting my heads. I would like to make around 600 to the wheels. Right now my setup consists of a stock v block with 03 heads and cams. I do have a set of 98 cobra cams that i heard were "more agressive" but i dont have any specs to go by. I am running an aftercooled vortech v2 si trim with the stock pully. The most boost i see is about 7psi @ around 6.5k rpm. I havent had it tuned yet so i dont know what it is making to the wheels. I would like to get a set of bigger injectors and a pully and see if i can make close to 600 at the wheels. Vortech claims that this supercharger is capible of 650hp (flywheel im guessing). But if i had to i can upgrade to a t trim which should do 750hp. However, before any of that i am going to rebuild the bottom end with forged parts. I really dont want to spend the money on head work and cams if i can acomplish my goal with stock heads and cams.

October 12th, 2009, 10:25 PM	#2
98Cobra_sleeper Enthusiast 1998 mustang cobra Join Date: Jul 2009 Location: pa Posts: 617 iTrader: 0 reviews	well, i have a 98 cobra. i had a V2 SCI trim makin 15lbs of boost with 42lb injectors and no intercooler and i made 460 to the wheels UNTUNED. the tuner said i had 40more hp in it if i got it tuned, so im sayin that YES, it can be done. I was told i could make about 550ish with 60lb injectors, longtubes, and an intercooler and o/r xpipe swapped in. __________________ HP twin turbo - 691hp/608tq with 15lbs huffed in (old setup) comin soon...ON3 turbo kit, PTE7175

October 12th, 2009, 10:43 PM	#4
98Cobra_sleeper Enthusiast 1998 mustang cobra Join Date: Jul 2009 Location: pa Posts: 617 iTrader: 0 reviews	yeah, if you have the cams, swap em in. get bigger injectors, and probably upgrade to the t-trim. you wont have to run that much more boost, maybe 12#'s with that t-trim to see your goal. make sure you have a good enough fuel supply for that much hp __________________ HP twin turbo - 691hp/608tq with 15lbs huffed in (old setup) comin soon...ON3 turbo kit, PTE7175

October 12th, 2009, 11:44 PM	#5
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	the stock internals will handle that power (600) if youve got a Termi shortblock. they come fully forged with manley rods and pistons and forged crank. if you didnt already know. __________________ BUILD 2 IN PROGRESS

October 13th, 2009, 08:05 PM	#7
Smoothgrandmama Assistant to the Manager 12 GT 8.46@88 1/8 Join Date: Apr 2007 Location: Willis,Texas Posts: 7,135 iTrader: 6 reviews	03 cobra's can make in excess of 700whp with the right blower and enough psi __________________ Join The MM Facebook: Modded Mustangs Facebook Vote For Modded Mustangs Ride of the Month Eskimo Brothers To Smooth: Safi, Blitz34, Graystang01, WillTheThrill, Bwal, 101Fng

October 12th, 2009, 10:31 PM	#3
tbird88tbo Regular 1998 Mustang Base Model Join Date: Feb 2009 Posts: 109 iTrader: 0 reviews	That makes it sound promissing. I already have headers and an xpipe.

October 13th, 2009, 07:35 PM	#6
tbird88tbo Regular 1998 Mustang Base Model Join Date: Feb 2009 Posts: 109 iTrader: 0 reviews	I wish this was a termi shortblock, but it came from a mark 8. I kinda put it together in a rush so i could drive it some this summer, but now that winter is on the way i will be pulling it back out and doing it right.

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