This is topic How Much Boost To Get 300+ in forum Tech Talk at Northern California Ford Owners  .


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Posted by MikeD. (Member # 8060) on :
 
How much boost would it take to get a 93 with stock heads, cobra intake, stock cam w/ 1.7's, and bolt on's, to break the 300+ rwhp mark? I said 12lbs, but I want to get some of your guy's input. Thanks fellers..
 
Posted by MikeD. (Member # 8060) on :
 
Almost forgot the most important part.. POLISHED cobra intake AND head unit.. haha
 
Posted by turbo50 (Member # 6700) on :
 
6-8 lbs and a good tune on a healthy motor
 
Posted by MikeD. (Member # 8060) on :
 
Yeah, this kids car runs tits, 148k on the clock. As far as I know hasn't been abused. I told him, to be careful on a 93 with the hypers though.
 
Posted by jordan_0806 (Member # 5888) on :
 
I would say around 8-10 lbs to be sure... [Smile]
 
Posted by MikeD. (Member # 8060) on :
 
Sweet. He'll be happy, I'll be pissed though, cause his stock headed car will be faster than my h/c/i car!! But then again I have 5k miles on my engine, and his will probably blow soon. I'll just tell him he can only run 6lbs.. Hehe
 
Posted by 92stangLX (Member # 3252) on :
 
I would say 8lbs. Make sure you do a compression and leakdown test to check for issues.

Also, use an FMU and BTM unless you plan on getting a tune
 
Posted by stangin' (Member # 514) on :
 
i was running 7lbs on a stock motor with a novi 1000 with a tune and it made 315rwhp.
 
Posted by SCCA SM (Member # 9758) on :
 
quote:
Originally posted by stangin':
i was running 7lbs on a stock motor with a novi 1000 with a tune and it made 315rwhp.
bingo.. im running 6psi on a kenne bell and making 310rwhp.. i have a 95 cobra so i have the gt40 heads but then again i think the motor has another 10~ hp left in it..
 
Posted by LILstock3valve (Member # 4702) on :
 
Just to clear things up on this post, I'm the owner of the 93. I'm looking to sell it, mike just tell the "fellers" that you're the one inquiring about this set up. [Wink]
 
Posted by MikeD. (Member # 8060) on :
 
Yeah your definately not the owner.. Lol.
 
Posted by LILstock3valve (Member # 4702) on :
 
Come on bro this is Kellan. I posted via Justin's account bro. Now who's the owner
 
Posted by turbo50 (Member # 6700) on :
 
I was a talking turbo boost.
 
Posted by Camara90 (Member # 134) on :
 
Same HP NA should take him, especially on a hot day. Shit I used to smack Supercharged cars with 60+ more rwhp all the time, even from a roll. But who knows what went into those dyno numbers, higher octane gas, cooler day, fans etc.. Not to say Supercharged is bad but NA power feels so good, and always on tap!

[ June 02, 2010, 07:00 PM: Message edited by: Camara90 ]
 
Posted by mustangfan450 (Member # 8885) on :
 
quote:
Originally posted by turbo50:
I was a talking turbo boost.
so does that mean 2-3 pounds of superchager boost
 
Posted by turbo50 (Member # 6700) on :
 
quote:
Originally posted by mustangfan450:
quote:
Originally posted by turbo50:
I was a talking turbo boost.
so does that mean 2-3 pounds of superchager boost
8lbs of turbo boost is like a 12 lb CRANK driven blower............
 
Posted by SteveL (Member # 1241) on :
 
A simple estimate of how much boost is needed.

A 302c.i. motor makes 225Hp normally aspirated and you want 325Hp. How much boost?

325 hp / 225 Hp = 1.44
That motor needs 44% more air flow.
Air pressure is 14.7psi. 14.7 * 0.44 = 6.5psi boost.

As someone mentioned, it takes horsepower to drive a belt driven supercharger so to actually get 325Hp you'll need to target for about 340Hp (about 7.5psi).
 
Posted by turbo50 (Member # 6700) on :
 
quote:
Originally posted by SteveL:
A simple estimate of how much boost is needed.

A 302c.i. motor makes 225Hp normally aspirated and you want 325Hp. How much boost?

325 hp / 225 Hp = 1.44
That motor needs 44% more air flow.
Air pressure is 14.7psi. 14.7 * 0.44 = 6.5psi boost.

As someone mentioned, it takes horsepower to drive a belt driven supercharger so to actually get 325Hp you'll need to target for about 340Hp (about 7.5psi).
And that still wouldnt be at the wheels I still say 8-12psi of turbo boost for stock motor to make over 300hp at the wheels.

I think that TurboGT off of here did it with a bone stock 160K longblock and 18psi he made 420rwhp with the bone stock longblock intake etc.
 
Posted by 89bluenotch (Member # 7454) on :
 
quote:
Originally posted by turbo50:
quote:
Originally posted by SteveL:
A simple estimate of how much boost is needed.

A 302c.i. motor makes 225Hp normally aspirated and you want 325Hp. How much boost?

325 hp / 225 Hp = 1.44
That motor needs 44% more air flow.
Air pressure is 14.7psi. 14.7 * 0.44 = 6.5psi boost.

As someone mentioned, it takes horsepower to drive a belt driven supercharger so to actually get 325Hp you'll need to target for about 340Hp (about 7.5psi).
And that still wouldnt be at the wheels I still say 8-12psi of turbo boost for stock motor to make over 300hp at the wheels.

I think that TurboGT off of here did it with a bone stock 160K longblock and 18psi he made 420rwhp with the bone stock longblock intake etc.
What's the power band like with boost like that running through all the stock components?? I bet the low end and mid range rip!
 
Posted by turbo50 (Member # 6700) on :
 
quote:
Originally posted by 89bluenotch:
quote:
Originally posted by turbo50:
quote:
Originally posted by SteveL:
A simple estimate of how much boost is needed.

A 302c.i. motor makes 225Hp normally aspirated and you want 325Hp. How much boost?

325 hp / 225 Hp = 1.44
That motor needs 44% more air flow.
Air pressure is 14.7psi. 14.7 * 0.44 = 6.5psi boost.

As someone mentioned, it takes horsepower to drive a belt driven supercharger so to actually get 325Hp you'll need to target for about 340Hp (about 7.5psi).
And that still wouldnt be at the wheels I still say 8-12psi of turbo boost for stock motor to make over 300hp at the wheels.

I think that TurboGT off of here did it with a bone stock 160K longblock and 18psi he made 420rwhp with the bone stock longblock intake etc.
What's the power band like with boost like that running through all the stock components?? I bet the low end and mid range rip!
Not sure ask him via pm on here or norcal1320

There is a post about it with a dyno graph on turbomustangs

His screen name is TurboGt
 
Posted by SPTVENM (Member # 7080) on :
 
quote:
Originally posted by Camara90:
Same HP NA should take him, especially on a hot day. Shit I used to smack Supercharged cars with 60+ more rwhp all the time, even from a roll. But who knows what went into those dyno numbers, higher octane gas, cooler day, fans etc.. Not to say Supercharged is bad but NA power feels so good, and always on tap!
ya, i dont know why but for some reason a n/a car, say 400hp, will be faster than a forced induction car with the same hp
 
Posted by LILstock3valve (Member # 4702) on :
 
I have always wanted a boosted car and may do it wit the new 3 valve but there is just something wildly fun and entertaining about the sound and feel of an n/a car and when somebody at the track walks up after a run and says holy shit I thought you were supercharged. GREAT! But who doesn't love the feeling of hitting boost though.
 
Posted by LILstock3valve (Member # 4702) on :
 
Oops. Big mikes comment got me off track of lil mikes thread. MikeD why don't you put nitrous to your setup I thought that's what Dan built it for? Don't quote me on that I'm sure turbo50 knows all the details but if this is the case wouldn't a nice little shot and some better tires be a much cheaper way for you to go mid 11s all day and still DD your car
 
Posted by turbo50 (Member # 6700) on :
 
quote:
Originally posted by LILstock3valve:
Oops. Big mikes comment got me off track of lil mikes thread. MikeD why don't you put nitrous to your setup I thought that's what Dan built it for? Don't quote me on that I'm sure turbo50 knows all the details but if this is the case wouldn't a nice little shot and some better tires be a much cheaper way for you to go mid 11s all day and still DD your car
Absolutely. If it is for gay MikeDs car then just put some nitrous on it for now. It will handle it, easy.
 
Posted by LILstock3valve (Member # 4702) on :
 
Dan you need to talk some sense in to this poor kid. He doesn't know what he wants!
 




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