1lb boost=X horsepower?
10-16-2005, 12:22 AM
#12
Tribe Shaman
iTrader: (4)
Join Date: May 2004
Location: Texas
Posts: 3,050
Likes: 0
Received 0 Likes
on
0 Posts
it really depends on your set up and what mod's you have.
some mod's offer very little where as other mod's offer bigger gains.
a good base line is around 12 to 15 horses per pound of boost.
as you add mod's that help the supercharger make more horse power the horses per pound of boost changes.
camshaft, intercooler, exhaust, injectors, air filter, and so on, help increase horse power.
if you started off at a base line of 12 horses per pound making 10 pounds of boost with a gain of 120 horses.
add your mod's and make another run you could show 24 horses per pound making 10 pounds of boost with a gain of 240 horses.
some mod's offer very little where as other mod's offer bigger gains.
a good base line is around 12 to 15 horses per pound of boost.
as you add mod's that help the supercharger make more horse power the horses per pound of boost changes.
camshaft, intercooler, exhaust, injectors, air filter, and so on, help increase horse power.
if you started off at a base line of 12 horses per pound making 10 pounds of boost with a gain of 120 horses.
add your mod's and make another run you could show 24 horses per pound making 10 pounds of boost with a gain of 240 horses.
10-16-2005, 08:55 PM
#13
Ok, so 5lbs of boost on a whipple should produce somewhere between 50 and 125rwhp? lol, big difference. Either way, I should be able to get at least 50rwhp right?
Here's the deal. I just installed a new crank pulley which took me from 10lbs of boost with my smallest supercharger pulley, to 15lbs of boost.
I don't plan to run it on the street with that much boost. but, i do plan to run it at the track like that with at least 100 octane and around 12deg timing. I ran a 13.35 on 10lbs boost. What would you all guess I'll run on 15lbs? I guess 12.8ish. Imagine if I pick up 125rwhp? that will put me at very close to 12.00et. In a 6100lb crew cab 4x4, lol.
Here's the deal. I just installed a new crank pulley which took me from 10lbs of boost with my smallest supercharger pulley, to 15lbs of boost.
I don't plan to run it on the street with that much boost. but, i do plan to run it at the track like that with at least 100 octane and around 12deg timing. I ran a 13.35 on 10lbs boost. What would you all guess I'll run on 15lbs? I guess 12.8ish. Imagine if I pick up 125rwhp? that will put me at very close to 12.00et. In a 6100lb crew cab 4x4, lol.
10-16-2005, 09:16 PM
#14
Tribe Shaman
iTrader: (4)
Join Date: May 2004
Location: Texas
Posts: 3,050
Likes: 0
Received 0 Likes
on
0 Posts
i would do a supercharger cam, a set of 60 lbs injectors, a better fuel pump, and a tune on 2 PCM's.
PCM 1 would be tuned for 10 lbs of boost. daily driver
PCM 2 would be tuned for 15 lbs of boost. drag strip
come race day all you would have to do is change out the pulley and the PCM.
PCM 1 would be tuned for 10 lbs of boost. daily driver
PCM 2 would be tuned for 15 lbs of boost. drag strip
come race day all you would have to do is change out the pulley and the PCM.
10-17-2005, 05:14 PM
#15
Originally Posted by PappyDan
i would do a supercharger cam, a set of 60 lbs injectors, a better fuel pump, and a tune on 2 PCM's.
PCM 1 would be tuned for 10 lbs of boost. daily driver
PCM 2 would be tuned for 15 lbs of boost. drag strip
come race day all you would have to do is change out the pulley and the PCM.
PCM 1 would be tuned for 10 lbs of boost. daily driver
PCM 2 would be tuned for 15 lbs of boost. drag strip
come race day all you would have to do is change out the pulley and the PCM.
10-18-2005, 07:27 PM
#18
TECH Enthusiast
iTrader: (1)
Join Date: Aug 2004
Location: Ontario
Posts: 682
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Yellowsierra
Yeah you get alot more power from a turbo usally about 25rwhp because you dont lose power from a belt. The faster you spin a blower the more boost you make but you also get more drag from the rotors so you lose hp not including the air heating up. The one thing I loved about my whipple was the instant boost thats a big plus. 
The parasitic drag is more like 80hp @ 15lbs boost. Its a Pig to power but fun to drive!! Also the 15 lb pulley looks about one inch diameter. Actually it is 2.5 in but looks very small.
10-18-2005, 07:29 PM
#19
TECH Enthusiast
iTrader: (1)
Join Date: Aug 2004
Location: Ontario
Posts: 682
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by kbracing96
What kind of IAT are you seeing with 15# of boost with the Whipple and the meth? I'm just curious.
Mine is past the supercharger and the temps are hot. With the 15lb pulley it gets as hot as 200F!$#@$@$@#$. Need Intercooler?
