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Here's my results from today. This was with Brenspeed 91 tune, Bassani x-pipe & axle-backs, and JLT intake. People told me my 4.10s gave a false low.
My question is looking at the sheet, did the Dynojet correct for altitude here in Salt Lake? Looks like pressure was really low. Forgot to ask before I left. How's my 4.6 running for being so unmodified?
I appreciate any input, please school me!
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Ok, thanks for the info!
The dyno was a new experience for me. It looks like the mods made a good difference, yeah it is night and day from a stock GT. Longtubes are next so I can be useful here and post up what difference they made using the same dyno.
I was disappointed because my buddy made 317/315 with same mods and BBK longtubes with Hotrod cams. His dyno run was back in Tx @ 413 ft altitude. Thats why I was wondering if this dyno figured in the altitude or not.
Americanmuscle.com (and Ford) say that a car with longtubes will see a 30rwhp gain from the Hot Rod Cams.
Here was my dyno sheet:
A friend of mine made 285rwhp and 297rwtq with 4.10's, an axle back, intake, and 91 tune.His intake and tune only got him 15 rwhp and 5rwtq more than me (admittedly, we feel his dyno fell short of expectations).
I know of another local guy who said his GT with full exhaust, intake, tune, under drive pulleys, hot rod cams, and charge motion delete plates made about 335 rwhp. That's a lot of money but he picked up a total of about 65rwhp (Don't know the torque).
The key in looking at the dynos with all the parts on is not necessarily what the max power is but how long it is holding a higher power level. I would rather hold 290rwtq for 3,500rpms than peak at 300rwtq for 500 rpms.
If I can get my car on the dyno this weekend, I will post up what I made with my current set up which is Mac longtubes, offroad Mac ProChamber, and Bassani axle back with 4.10 gears.
I agree, it's easy to get lost in dyno numbers.
I was reading up that there are so many things that can change numbers on a dyno that you just have to use it to see what you make power with so I'll just be happy with how fast my car goes instead of numbers. And I'll use the dyno to make sure what I do is working.
Nice! Looks like you were lucky to get one of the engines that are stronger. Good solid numbers.
I was actually hoping to get more horsepower and 300rwtq but with out a proper tune I know what I got is more realistic. I hope to add quite a bit of power (hopefully get in to the 320's for both rwhp and rwtq) with the charge motion delete plates, intake, and under drive pulleys I have sitting in boxes. After they're installed and the car is tuned I want to post a thread about what gains to expect for each level of basic bolt-on's. Hopefully summer of 2014 holds FRPP Hot Rod cams.
In retrospect, I just remembered I am still running 87 octane. I had a 93 octane tune but didn't think to load it. When I did run the 93 tune last summer (stopped due to cost of gas), the car felt faster and was a bit louder. I know from another Mustang I had the dyno for the intake I had and switching between 87 and 93 showed gains of 9rwhp. So, had I remembered to switch, I probably would have thrown down another 5rwhp and 5 rwtq, getting me over the 300rwtq bar I was expecting to see.
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