Has anyone with the 181 & 185 pulleys been to a 1/4 mile track if so what times have you posted. We know what the 178 can do but I don't think I've seen any/many post on the other pulleys. I personally have had the 178 and the 181 and did not see much difference. My boost gauge showed a little more boost with the 181 but my times were not any different. And I have tried over ten different custom tunes with both.

 

https://www.crossfireforum.org/forum...ad.php?t=24306


Here's my actual time and corrected to sea level time.........


Density Altitude = 4740 feet ET
Uncorrected 12.61 @ 110.37
Corrected 11.85 @ 117.02

 

I don't see how you answered his question with your post on the 185 pully.He is asking if there is any difference between the 178 and 181 pully in terms of performance.

Dennis

 

You might want to reread his very first sentence.

 

Your tough lol.

I think that he was simply giving his figures w/ the 185 pulley. Unless you can change a pulley in 19 MIn and run a 1/4 and have the other pulley to switch, then run another 1/4 mile...... then do another 19 min pulley change then run another 1/4 run. And on and on.

Or you could get on the mustang dyno and get the number comparisons. But, they might be lower then you expect. Then you might be bummed out if you spent 3 grand to find out that you really did not gain that much HP or speed.

Man I love this Forum.

Seriously, it is great to read all of the posts, both technical and personal. The different opinons, some bantering and learning from each others experiences and knowledge of cars and experimentations with the Crossfires. Especially, since I have minimal expertise in that department.

 

Wow this thread got off track, what I'm asking is for real 1/4 mile track #'s with either the 181 pulley and the 185 pulley so we can see if they are any better than the 178 that's tried and true!

 

My Bad.

Dennis

 

I did my passes after I had the needswings intake and dr's. Not sure if the pulley would yield the best times on street tires. My opinion was the intake made more power than the pulley. Mine is a 178. Combined mods my guess would be equal to a 185 pulley without the risk. The track will have to sort it out, all on the same day. We need to pick a centrally located track and have an event. I'm down for traveling 12 hours.

 

On the 17th of this month at US 41 there is a private track rental. There will be a Code 3, 178 renntech, and Let pulleys there. Should be a good head to head test. I know Steve and I both have pulley, intake and ecu mods. Riot, I believe has a 185 pulley, NW intake and tune. All we need now is 181 pulley and we be set.

 

Tonight ill tell you what a 185 does w/ intake, he, and 3" exhaust.

Two of my buddies will be running Code3's.

 

Sweet, do tell.

 

How and why do you correct for time?? Isn't time the same!

 

I think you'll surprise the other guys !

 

I am one of those buddies with the Code 3. Mods are in my signature and I will post my times tomorrow.

 

I have the 181 pulley but it has not been installed yet. Waiting for my combo boost/ A-F gauge to arrive so I can have everything installed at once. Not sure of the ¼ track schedule other XF6 members are going to here in TX but I know the 1/8 track schedule. So, I will post my 1/8 and dyno numbers hopefully next week and find some info on this 1/4 track. You can track the progress in my sign \/.

 

We all go to Texas Motorplex in Ennis, TX. You should try and make it out tonight!

 

That's a little far for me. Have fun. I'm going try and make the NHRA National in Fontana, CA later this summer. Our car doesn't have a stock rating so we have to run in the non-electronics class.

 

If your track is close to or at sea level you will run faster than someone at say 3000' elevation. modulardepot.com has calculator to help figure corrected times. racefan.com has all the tracks listed with elevations. The main reason for this is in bracket racing. Without going into much detail, you can accumulate data each time your run at different tracks and different conditions to predict what your car will run. The elevation level will yield you a faster time, but if it's cool then it will be faster. Vice Versa with heat and humidity. The higher the elevation would yield slower times. So if you ran lets say a 13.2 and then used the calculator to figure out at a sea level track with better conditions, would give you an idea how fast you possibly can run at a different location. Don't mean to hijack the thread. I have a post about this in the racing section I think. It was a long time ago.

 

Altitude, temperature, humidity and barometric pressure all have a BIG role in how fast a car will run. If you use the DA (Density Altitude) and correct the times using a online calculator you can have a more accurate way of comparing numbers from cars that are in different states(elevations). A stock SRT-6 in So. Cal. at sea level will run a lot faster than that same exact car would run here in Las Vegas at 2100 ft above sea level...or even worse/slower in Utah at 4700+ feet above sea level.

 

+1 Thanks