SC pulley question

jgibby · April 9th, 2009, 01:42 PM

Just to update on my a/F ratio, brenspeed said my vacuum line setup was fine so they had me add 6 richer to the 93 octane tune. They said that should take care of it. Originally I had been set on 6 leaner.

Next question. I want to go from a 3.87 pulley to the 3.6 pulley (7.5 psi). how much power could I expect from this upgrade, given the current mods I have? Anyone know how much Brenspeed charges to update the SCT program for new mods?

usafimj · April 9th, 2009, 01:49 PM

You'll get a better power increase going to a 3.4. Get in touch with Mickey. I think he's running a 3.4

navyman8903 · April 9th, 2009, 05:59 PM

brenspeed used to not charge so long as you got it from them, I don't know about now. And I think you will like the 3.4 pulley alot also I would pm mickey.

kenneth · April 9th, 2009, 07:10 PM

You are looking at around 25-30 hp for each pulley.
Not sure what Brenspeed charges, but JDM charges $185 for a new tune.

jgibby · April 9th, 2009, 07:19 PM

Originally Posted by navyman8903

brenspeed used to not charge so long as you got it from them, I don't know about now. And I think you will like the 3.4 pulley alot also I would pm mickey.

If I'm at 420 rwhp now and I go with the 3.6 then thats going to put me at least around 540 crank hp. Going to the 3.4 could put me in dangerous territory according to what I read on some of these forums. I realize that at some point I shouldnt go any further without having to upgrade internal components.

navyman8903 · April 9th, 2009, 08:19 PM

is that sae correction? and I don't think that the 3.4 is going to kill your engine, but 3.6 is safer I guess.

usafimj · April 9th, 2009, 09:45 PM

There's a guy on s197forum.com selling a saleen 3.4 6-rib pulley and belt for $65

navyman8903 · April 9th, 2009, 10:22 PM

there is your solution right there.

kenneth · April 10th, 2009, 11:35 AM

Originally Posted by jgibby

If I'm at 420 rwhp now and I go with the 3.6 then thats going to put me at least around 540 crank hp. Going to the 3.4 could put me in dangerous territory according to what I read on some of these forums. I realize that at some point I shouldnt go any further without having to upgrade internal components.

Your running the 3.8 pulley right now, the 3.6 pulley would put you in the range of 510 crank HP.
The 3.4 pulley would put you in the range of 540 crank HP.

I've been running the 3.4 pulley on mine for 6-7 Months now and beat on it regular, never had any issues.
If you haven't upgraded your fuel system, with the 3.4 pulley you would need to.

jgibby · April 10th, 2009, 02:37 PM

Originally Posted by kenneth

Your running the 3.8 pulley right now, the 3.6 pulley would put you in the range of 510 crank HP.
The 3.4 pulley would put you in the range of 540 crank HP.

I've been running the 3.4 pulley on mine for 6-7 Months now and beat on it regular, never had any issues.
If you haven't upgraded your fuel system, with the 3.4 pulley you would need to.

I think I'll just try and be happy at that power level for awhile. I already spent $160 on the pulley and belt, then it'll be another $185 for the brenspeed email tune. I don't want to have to buy a new fuel pump with all that so I'll just stop at the 3.6 pulley (for awhile anyway). I figured with the parasitic loss through the auto tranny that i was in the ballpark of 510 crank hp already. I might be wrong though.

April 9th, 2009, 01:42 PM	#1
jgibby Regular Join Date: Apr 2009 Posts: 94 iTrader: 0 reviews	SC pulley question Just to update on my a/F ratio, brenspeed said my vacuum line setup was fine so they had me add 6 richer to the 93 octane tune. They said that should take care of it. Originally I had been set on 6 leaner. Next question. I want to go from a 3.87 pulley to the 3.6 pulley (7.5 psi). how much power could I expect from this upgrade, given the current mods I have? Anyone know how much Brenspeed charges to update the SCT program for new mods? __________________ 2007 GT California Special, auto transmission Saleen SC with 475 hp upgrade, 3.6 Saleen pulley at 8 psi, Kooks long tube headers and X-pipe with high flow cats, Magnaflow Magnapack axleback, Ford Racing Handling pack. 450whp/420 wtq [/SIGPIC]

April 9th, 2009, 01:49 PM	#2
usafimj I Post Entirely Way Too Much 2007 Ford Mustang GT 12.847 @ 114.12mph Join Date: Sep 2007 Location: Oklahoma City, Ok. Posts: 5,084 iTrader: 1 reviews	You'll get a better power increase going to a 3.4. Get in touch with Mickey. I think he's running a 3.4 __________________ 07 GT-- Gone But Not Forgotten Military Crew E-5 Last edited by usafimj; April 9th, 2009 at 01:55 PM.

April 9th, 2009, 07:10 PM	#4
kenneth Hardcore Enthusiast 2006 Mustang GT 11.45@123.61 Join Date: Nov 2007 Location: Cut Off, LA. Posts: 1,468 iTrader: 2 reviews	You are looking at around 25-30 hp for each pulley. Not sure what Brenspeed charges, but JDM charges $185 for a new tune. __________________ Stock for now.

April 9th, 2009, 09:45 PM	#7
usafimj I Post Entirely Way Too Much 2007 Ford Mustang GT 12.847 @ 114.12mph Join Date: Sep 2007 Location: Oklahoma City, Ok. Posts: 5,084 iTrader: 1 reviews	There's a guy on s197forum.com selling a saleen 3.4 6-rib pulley and belt for $65 __________________ 07 GT-- Gone But Not Forgotten Military Crew E-5

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