I saw a post somewhere and someone (pretty thin so far) said he dynoed his car with a 2.93 and a 2.80 and said the gains between the two were slim. He figured he was at max efficiency with the 2.93.
:rollseyes
sqidd
:rollseyes
sqidd
TO PULLEY OR NOT TO PULLEY?
- Thread starter Fast03Cobra
- Start date
edited: That's high roller's post.
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I am going with Jim V. on the 3.20 pulley. Another friend is also going with the 3.20. To be honest, I am going the conservative route and letting you mavericks blaze a trail (hope the trail is all you blaze 
Will evaluate later on where to go from here. Hey Jim V. I noticed you have increased your hp in your sig, what have you added to the 03? I know you have access to dyno and have been keeping up with you and your car, would you mind to summarize what you have done so far?
Will evaluate later on where to go from here. Hey Jim V. I noticed you have increased your hp in your sig, what have you added to the 03? I know you have access to dyno and have been keeping up with you and your car, would you mind to summarize what you have done so far?
I have it on good authority:
1. The rear end is indestructible on street tires.
2. The 2.93 diameter puller does not overstress the blower and volumetric efficiency stays ok. The 2.8 Pulley puts too much belt load on the snout and will have long term durability effect. I was originally going to go with a 3.2 pulley, but was advised that the 2.93 is "a real good match".
3. The motor itself is stout. They do not anticipate people will have internal problems from +500 motors as long as they have a good tune.
4. They really like what the Bassani X pipe specific for the 03 will do. Scavenges the iron manifolds well. Good converters.
5. There is not really a lot of loss from the stock airbox and even the silencer. What really sucks is the Ford stock filter and even any of the stock K&N or other supposedly high flow Stock filters replacements. Simply the filters are the major restriction. What needs to be developed is a larger capacity filter for the 03 stock air box.
1. The rear end is indestructible on street tires.
2. The 2.93 diameter puller does not overstress the blower and volumetric efficiency stays ok. The 2.8 Pulley puts too much belt load on the snout and will have long term durability effect. I was originally going to go with a 3.2 pulley, but was advised that the 2.93 is "a real good match".
3. The motor itself is stout. They do not anticipate people will have internal problems from +500 motors as long as they have a good tune.
4. They really like what the Bassani X pipe specific for the 03 will do. Scavenges the iron manifolds well. Good converters.
5. There is not really a lot of loss from the stock airbox and even the silencer. What really sucks is the Ford stock filter and even any of the stock K&N or other supposedly high flow Stock filters replacements. Simply the filters are the major restriction. What needs to be developed is a larger capacity filter for the 03 stock air box.
Have these "authorities" fixed your car? Any updates on your situation?
ok so will these things make more power wth the 2.80 pulley over the lightning pulley??? how much boost will i see with it?? i have the lightning pulley but figure if i can get 2 more pounds of boost safely and it actually gives more power ill do it.
280" pulley
The 280" pulley makes approx. 1.5#'s of extra boost on my 00 Lightning. This same pulley will produce approx. 6.5#'s of boost on the 03 Cobras.
Mark/LFP
The 280" pulley makes approx. 1.5#'s of extra boost on my 00 Lightning. This same pulley will produce approx. 6.5#'s of boost on the 03 Cobras.
Mark/LFP
Back to this thread huh? I think I am going to keep the stock airbox w/ K&N, ONCE I find a GOOD exhaust match I will do the 2.93 or 3.2 and a Superchip and dyno tuning. A local Mustang speed shop said they would do CAI, DynoMax Cat-Back, SuperChip, before and after Dyno pulls with tuning, for $1275.
Sounds like an ok deal to me... Now he also said they have the pulleys too... Might go with Pulley, plugs, and chip and keep the exhaust. Dont want too loud.
Problem is that I cant see using a restrictive 2.5" GT exhuast system on a 500 HP blown Cobra engine... Seems like that would be KILLING me!
WHO MAKES A 3" system?
Do you think if I did JUST the x-pipe it would give good benefits and still be somwhat quiet?
Sounds like an ok deal to me... Now he also said they have the pulleys too...
Might go with Pulley, plugs, and chip and keep the exhaust. Dont want too loud. Problem is that I cant see using a restrictive 2.5" GT exhuast system on a 500 HP blown Cobra engine... Seems like that would be KILLING me!
WHO MAKES A 3" system?
Do you think if I did JUST the x-pipe it would give good benefits and still be somwhat quiet?
Check this thread:
http://www.svtperformance.com/forums/showthread.php?s=&threadid=18545
There's a 3" exhaust, complete with pics and results. The converters are removable for track use and replaceable for street use.
As soon as it's in production I'm plunking down the plastic.
Here is a great article I found on another thread. Particularly the formula used to calculate potential boost of a supercharger. I tried using the formula, but I need to know the size of the lower pulley. Can someone who is more educated than me use this formula to find the "potential boost" of our suercharger? When you click on the link, click on the "Kenney Belle blower install article". Then the formula is on page 3. This article makes me want a kenney belle really bad! What is the size of the stock lower pulley anyway? The upper one is 3.65 right?
http://www.svt-enthusiast.com/modules/gallery/
http://www.svt-enthusiast.com/modules/gallery/
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