So I finally got a run with a cobra. The owner is a coworker and I finally got around to talking to him yesterday, I told him my mods and what I was making, he said he's pullied, bolt ons and a tune, said he put down almost 470whp/485wtq. So we did 3 runs from 60 since we were on the highway. First run he signals me to get the hit, I was confused but he insisted, bad idea! He fell back to 4 cars and couldnt make up ground, now he's taking me serious. Second, we take off and I very slowly start pulling to a 1 car lead by 120. Third run was 1.5 cars by 120. Today he walks up to me and calls me a damn liar and that I'm making more power than I led him to believe, I foresaw that coming so I brought my dyno sheet and handed it to him, he was speechless. He said he hasnt gone to the track lately but was trapping 112mph back when he had a larger pulley and was making just above 400whp. I was gonna record it but the camera man couldn't wait for us to leave work and had to go home, sucks I know.

 

Nice kill! I see in the other link that you make 424 rwhp & 381 rwtq on a mustang dyno. Have you ever had it dynoed on a dynojet?

 

It's actually 425/388 now after the longtubes, with a much safer low 11s air/fuel ratio. With the longtubes I got more power below the curve but was pulling timing on top due to the heat. No I have not dynoed on a dynojet

 

Nice kills man. Clear something up for me, a Mustang dyno will show higher numbers than a Dynojet right? Or is it the other way around?

 

It's "supposed" to read lower than a dynojet but I don't have first hand experience to back it up.

 

Okay, are either of those the kind of dyno that you have to take your wheels off and attach the dyno to the axle? I'm looking to dyno my car sometime soon (sorry for the mini-hijack).

 

I think the one you're talking about is a dynapack.

 

Good runs, Dark. My guess is your weight helped you a lot too. That's impressive that you pulled him like that.

 

I really have no clue what the weight difference between our cars is. I added the eaton which added some weight, 18s vs stock 17s on the cobra and I have almost 100lbs on the driver, he must weight 145-150 soaked wet.

 

I want to say they're about 300lbs heavier due to the cast block. I'm sure there's a long list of technical reasons why your car is quicker than his though. With your body weight and the eaton/parts, you guys are probably weighing in pretty close to each other.