Prolly a Mustang dyno?

I'm not sure about the different types of dynos but I believe this one was designed for RWD cars. They were having trouble getting a good pull on the car, so who knows. Maybe it was off, because I thought it seemed low as well, since a stock L67 is 195 whp.

was it possible you were getting some tire slippage on the dyno rollers? that could throw things off. I have seen cars smoke the tires on a wheel dyno before and you cant possibly be accurate with that happening...even still, almost 20 more ponies on the ground over a stock GTP is nothing to sneeze at. Thats a far cry over what a stock GT is putting on the pavement. Car must feel like a rocket (this is really taunting me btw...Ed sent me a price on parts for top swap...very tempting)

Do it T-bat!!

x80 bagillion!! do it!

and drummer, that seems wayy too low. im disappointed in those #'s. Our cars are pretty similar, (swap the headers for your cam). I want to see your 1/4 when you run it

If I do the swap it will be while before I think anout tackling it since my car is still my DD...and I would want to take my time do a lot of detail work...but it is very tempting and much cheaper than the turbo kit...I've got struts,an intake job, tranny cooler and a ram air hood to handle first.

Well fellas, looks like this top swap business didn't work out as well as I had hoped, at least in my case. I just got back from the track and my PB tonight was 14.518 @ 95.1 MPH.

I couldn't get traction until well after the 60' mark, and even then it barked 'em pretty good on the 1-2 shift. I don't know if I need better tires, or if my car just isn't performing like I thought it would. I figured even if I couldn't hit 13's like I wanted, I would still be hitting solid mid-low 14's.

So I'm going back Sunday, and it's supposed to be nice and hot, and I'm gonna lower the tire pressure 10 psi or so. Maybe that will help me hook better, and get some better times.

I must admit; I'm pretty disappointed with my car's performance over the last couple of days.

Well you shouldn't be disappointed, just because your numbers aren't there, if you don't have traction then know that your numbers ought to be much lower, so think of it that way.

List your mods something is off with your setup,possibly your tune .Chico.

Couple questions that might have an effect: What's your altitude? Was the track prepped properly?

Chico, mods are in my sig. Basically top end swap with IS1 N/A cam, PEM's, DP, and CAI.

Rook, the elevation is about 800 ft above sea level at the local drag strip. I'm not sure on the prepping question, because this was my first time actually running a car at the track so I wouldn't know how to compare it.

I didn't do too bad in the launches, it just spun like crazy. (.122 was my best R/T, and I had a 2.16 60')

I hate to say that Intense N/A cam may be part of your problem if I had known you were going to do a top swap I would have steered you away,I just looked at the mods on the test ZZP M-90 dyno Regal and they got 253whp and 300 wtq this is on a 150k engine with only u-bend and resonator delete and a open cone,the good knews you can drop pulley sizes to a 3.4 fairly safely with your mods and a custom tune from a knowlegable tuner should help.Chico.

So would it be advantageous to think about swapping cams to an XP or Blower cam from Intense?

I would try to tune for the cam you have but I do'nt think with the duration you have your golden but you may come up with a better set of numbers.Chico.

As for your ETs youg gotta get that wheel spin under control before you can get some good numbers.

Oh and find yourself some 16" torque stars for use at the drag strip. Those 17s are robbing you.