96-98 Cobra bolt-on RWHP

avitar290 · Feb 29, 2008

Ok, I have done much reading on RWHP numbers and here is what I discovered. 96/97 Cobra's, stock, make anywhere from 230ish to 250ish RWHP, and 98's make 240ish to 260ish. My question is this: With all the standard bolt-on's + custom tune, what kind of power are we looking at to the wheels.

Standard bolt-on's include:

Long Tube Headers
O/R X or H pipe
Cat back exhaust
Underdrive Pullies
Cold Air Intake

There are other bolt-on's, but a pro 5.0 shifter doesn't add HP and things like cams, heads and porting are what I consider "the next level".

So with a standard setup like this and a professionally done dyno tune, what are we looking at RWHP wise.

PS - I don't know really if it affects this, but one item I left off the list was rear end gear.

Thanks for all input on this subject!

Black97GT · Feb 29, 2008

With those mods and a tune I don't think 300+rwhp would be a problem.

Lightning Struck · Feb 29, 2008

avitar290 said:
Ok, I have done much reading on RWHP numbers and here is what I discovered. 96/97 Cobra's, stock, make anywhere from 230ish to 250ish RWHP, and 98's make 240ish to 260ish. My question is this: With all the standard bolt-on's + custom tune, what kind of power are we looking at to the wheels.

Standard bolt-on's include:

Long Tube Headers
O/R X or H pipe
Cat back exhaust
Underdrive Pullies
Cold Air Intake

There are other bolt-on's, but a pro 5.0 shifter doesn't add HP and things like cams, heads and porting are what I consider "the next level".

So with a standard setup like this and a professionally done dyno tune, what are we looking at RWHP wise.

PS - I don't know really if it affects this, but one item I left off the list was rear end gear.

Thanks for all input on this subject!

Ok first off I dont know where you seen a Cobra only make 230rwhp :dunno: :dunno: :dunno: :dunno: I have NEVER seen one that low. The 96 and 97's seem to float around the 250 mark and the 98 did about 10 or 15 more than that. Like I said I have NEVER seen anywhere a 4 Valve Cobra only do 230rwhp.....

Anyway with those mods AND a dyno tune you should be able to nip the 300rwhp mark.........the same mods on a 99/01 Cobra would get into the 320rwhp area

uncltrvlnmatt · Feb 29, 2008

Lightning Struck said:
avitar290 said:

Ok, I have done much reading on RWHP numbers and here is what I discovered. 96/97 Cobra's, stock, make anywhere from 230ish to 250ish RWHP, and 98's make 240ish to 260ish. My question is this: With all the standard bolt-on's + custom tune, what kind of power are we looking at to the wheels.

Standard bolt-on's include:

Long Tube Headers
O/R X or H pipe
Cat back exhaust
Underdrive Pullies
Cold Air Intake

There are other bolt-on's, but a pro 5.0 shifter doesn't add HP and things like cams, heads and porting are what I consider "the next level".

So with a standard setup like this and a professionally done dyno tune, what are we looking at RWHP wise.

PS - I don't know really if it affects this, but one item I left off the list was rear end gear.

Thanks for all input on this subject!

Click to expand...

Ok first off I dont know where you seen a Cobra only make 230rwhp :dunno: :dunno: :dunno: :dunno: I have NEVER seen one that low. The 96 and 97's seem to float around the 250 mark and the 98 did about 10 or 15 more than that. Like I said I have NEVER seen anywhere a 4 Valve Cobra only do 230rwhp.....

Anyway with those mods AND a dyno tune you should be able to nip the 300rwhp mark.........the same mods on a 99/01 Cobra would get into the 320rwhp area

Brian, before my tune mine was 238rwhp and 230rwt, after tune 258rwhp, 250rwt. Mine is as stock as you can get. My tuner told me, long tubes, full exhaust, cold air intake, and IRMC deletes will put you at about 305-310rwhp.

justinschmidt1 · Feb 29, 2008

why did I buy a gt :nonono:

Lightning Struck · Feb 29, 2008

uncltrvlnmatt said:
Lightning Struck said:

avitar290 said:

Ok, I have done much reading on RWHP numbers and here is what I discovered. 96/97 Cobra's, stock, make anywhere from 230ish to 250ish RWHP, and 98's make 240ish to 260ish. My question is this: With all the standard bolt-on's + custom tune, what kind of power are we looking at to the wheels.

Standard bolt-on's include:

Long Tube Headers
O/R X or H pipe
Cat back exhaust
Underdrive Pullies
Cold Air Intake

There are other bolt-on's, but a pro 5.0 shifter doesn't add HP and things like cams, heads and porting are what I consider "the next level".

So with a standard setup like this and a professionally done dyno tune, what are we looking at RWHP wise.

PS - I don't know really if it affects this, but one item I left off the list was rear end gear.

Thanks for all input on this subject!

Click to expand...

Ok first off I dont know where you seen a Cobra only make 230rwhp :dunno: :dunno: :dunno: :dunno: I have NEVER seen one that low. The 96 and 97's seem to float around the 250 mark and the 98 did about 10 or 15 more than that. Like I said I have NEVER seen anywhere a 4 Valve Cobra only do 230rwhp.....

Anyway with those mods AND a dyno tune you should be able to nip the 300rwhp mark.........the same mods on a 99/01 Cobra would get into the 320rwhp area

Click to expand...

Brian, before my tune mine was 238rwhp and 230rwt, after tune 258rwhp, 250rwt. Mine is as stock as you can get. My tuner told me, long tubes, full exhaust, cold air intake, and IRMC deletes will put you at about 305-310rwhp.

WHAT???????????? 238rwhp?? Was that a mustang dyno????

uncltrvlnmatt · Mar 1, 2008

Yes it was a Mustang Dyno. He said the car is right where it should be stock. You need to remember my car is bone stock, from the intake piping to the original exhaust.

Lightning Struck · Mar 1, 2008

uncltrvlnmatt said:
Yes it was a Mustang Dyno. He said the car is right where it should be stock. You need to remember my car is bone stock, from the intake piping to the original exhaust.

well there you go Matt, apparently you are not aware that a MUSTANG DYNO registers numbers much lower than a DYNO JET does. Thus being why I said I have NEVER seen a cobra put out a 230 something rwhp number. That 238 you did would have been like a 258 or so on a DYNO JET. Two totally diffrent dyno's in the respect of how they measure power.

jmystic · Mar 2, 2008

X-pipe, magnaflow's, u/d pulleys, jlt cai, msd coil packs/wires and a xcal2 tuned on a Dyno Dynamics dyno got me 294rwhp and 283rwtq (96 cobra with 90,000 miles). My next level was nitrous, 100 shot = 389rwhp and 381rwtq. With long tube headers, 300+ shouldn't be a problem.

avitar290 · Mar 4, 2008

Well my dyno numbers are in. I have the X pipe and cat back exhaust installed, and I had 5 or 6 dyno pulls. The best the stang could muster up was 264RWHP and 259RWTQ. The tuner is Tony from HP-Performance in Orange Park, FL, and he gave me a few tips and some other parts are going in soon so that number should be moving more towards the 300 mark.

Just in case anyone was wondering the specs on the car. It is a 97 cobra and has 145,000 miles on it. My first mod was Motive 4:30 gears, then a Pro 5.0 shifter, next an FRPP aluminum drive shaft, and now bassani catted x pipe and cat back exhaust. BTW the sound is phenomenal. A lot of people, myself included, enjoy the SLP loudmouths, but that loud, open sound is cool for like 3 weeks and then it annoys even you. If you want a butter smooth tone with a voluminous yet tolerable note, let me suggest the bassani system.

More updates to come as they happen.

AaRoN · Mar 5, 2008

Mike. said:
With those mods and a tune I don't think 300+rwhp would be a problem.

^he doesn't know what he's talking about :crazy2:

j/k....I agree with Mike

95Grandtouring5.0 · Mar 6, 2008

avitar290 said:
Well my dyno numbers are in. I have the X pipe and cat back exhaust installed, and I had 5 or 6 dyno pulls. The best the stang could muster up was 264RWHP and 259RWTQ. The tuner is Tony from HP-Performance in Orange Park, FL, and he gave me a few tips and some other parts are going in soon so that number should be moving more towards the 300 mark.

Just in case anyone was wondering the specs on the car. It is a 97 cobra and has 145,000 miles on it. My first mod was Motive 4:30 gears, then a Pro 5.0 shifter, next an FRPP aluminum drive shaft, and now bassani catted x pipe and cat back exhaust. BTW the sound is phenomenal. A lot of people, myself included, enjoy the SLP loudmouths, but that loud, open sound is cool for like 3 weeks and then it annoys even you. If you want a butter smooth tone with a voluminous yet tolerable note, let me suggest the bassani system.

More updates to come as they happen.

The gears actually give you a bit less of hp.

Dalamar · Mar 6, 2008

Exhaust, tune and a basic centrifical should make you quite happy without getting into heads and the rotating assembly.

2REDSTANGS · Mar 19, 2008

[/quote]

The gears actually give you a bit less of hp.
[/quote]
is this ture ?!
how much we talkin about

brunos400ex · Apr 19, 2008

they dont drop your hosrepower a whole lot theres a thread somewhere on here i think about it

AaRoN · Apr 19, 2008

It's like a 2-3hp drop.

Jaxon · Feb 8, 2009

Does noone even think of UDPs and TB as a bolt on? I know neither gain much, and the TB is pretty much a waste, but I bought my car and has both. I really need to get my car tuned... I put down like 279 in 95* weather and 80% humidity on a dynojet with 4.10s, locker, axles, 62mm tb, 42# injectors, pro-m maf, bbk cai, frpp shorties, no cats, crushbent catback with flowmasters, and an exhaust leak at the header before the midpipe(throwing my a/f all f'd up+the 42s on n/a) What do you guys think about that? Sounds like with bolt ons, you COULD hit 300whp on a mustang dyno with everything running perfectly and a tune.