Increasing Boost
03-05-2002 | 10:59 AM
#1
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Charter Member #300
Joined: Oct 2000
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From: Palm Harbor, FL
Increasing Boost
Yeah, you can tell when I work from the home office...
Since it looks like I'm probably hanging on to the Shooter for this season, I'd like it to go a little faster (big surprise).
I have a 97 454 Magnum with a B&M/Holley 174 Powercharger on it. It has about 4lbs of boost through it according to the gauge. I'd like to know if I go to the next smaller pulley will it grenade? I'd assume it would run at about 6lbs. I can run this all day long at full throttle (NYC Poker runs) and it never complains right now, does heat up a little but nothing of great concern. The motor has just under 200 hours and is in great shape. I know a bunch of you out there are running a similar setup. Also, is it worth it, i.e. how much more HP. This setup dyno'd at 525Hp before MSD and Crossover (like that matters). I emailed Holley for their input.
Since it looks like I'm probably hanging on to the Shooter for this season, I'd like it to go a little faster (big surprise).
I have a 97 454 Magnum with a B&M/Holley 174 Powercharger on it. It has about 4lbs of boost through it according to the gauge. I'd like to know if I go to the next smaller pulley will it grenade? I'd assume it would run at about 6lbs. I can run this all day long at full throttle (NYC Poker runs) and it never complains right now, does heat up a little but nothing of great concern. The motor has just under 200 hours and is in great shape. I know a bunch of you out there are running a similar setup. Also, is it worth it, i.e. how much more HP. This setup dyno'd at 525Hp before MSD and Crossover (like that matters). I emailed Holley for their input.
03-05-2002 | 12:42 PM
#2
speel chekk this fokker!
Joined: Feb 2001
Posts: 5,329
Likes: 1
From: Locust Valley, New York
holley probaly won;t help. If they says it fine (and they don;t support tier marine stuff very well) and you grenade it because of detonation where are they?
If you are concerned abotu heat biuld up superchiller makes an intercooler for the 174. Search back a month or two there was a thread on it. Or if you want to run higher boost you coudl just use 93+ octant fuel.
If you are concerned abotu heat biuld up superchiller makes an intercooler for the 174. Search back a month or two there was a thread on it. Or if you want to run higher boost you coudl just use 93+ octant fuel.
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03-05-2002 | 02:00 PM
#4
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Joined: Oct 2000
Posts: 3,045
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From: N. NJ, Eastern LI
If it is for sale don't touch it. 6 lbs. of boost without intercooling is trouble, especially if you run hard. If you do damage the engine you will need to replace it to sell it, leaving less money for new boat.
03-05-2002 | 02:44 PM
#5
Charter Member #655
Joined: Dec 2000
Posts: 4,939
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From: Holland, Michigan
Shooter I have the smaller pully for a B&M 250 if they are the same I'll make you a great deal I never used it and sold the blower.....if you have the part # I'll check it......you can make me an offer.....
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03-07-2002 | 07:43 PM
#7
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Joined: Oct 2000
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From: Palm Harbor, FL
New thought,
Bobby at BlueLightning said that I have "more in the timing". I'm using a Tbolt IV. Can advancing a little get some more perfromance and be less stressful than increasing the boost? Just a thought...
Bobby at BlueLightning said that I have "more in the timing". I'm using a Tbolt IV. Can advancing a little get some more perfromance and be less stressful than increasing the boost? Just a thought...
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