MediumD
Dedicated LVC Member
The car's a 93 Mark VIII, with a 100% stock motor (only mods that may have had a tiny effect on power are removed air silencers and muffler delete.)
The guys running the dyno stopped the pulls at 5250rpm. My tach needle reads high by 500rpm, which I forgot to tell them about. So although my torque curve was dropping by that RPM, Next time I'll have them spin it to 6250 or so. And they didn't turn the auto headlights off, so I couldn't get video, and there's like a quarter HP right there
The first pull (blue on the graph,) they couldn't get a good tach signal. So it ended up being worthless, but at least it's kinda funny to look at.
The second pull (green on the graph,) was the only good pull of the day. 241ft.lbs at 4600rpm, and it made 224hp at 5300rpm when the pull was stopped.
The third pull (red on the graph,) the motor was pretty damn heatsoaked by that time (their fan wasn't doing so well.) And it decided to run really rich (10.x AFR through most of the pull.)
So overall a fun day, and I was impressed with the torque. Being that these motors generally make peak power closer to 56-5800, and usually make very similar HP and torque numbers... I'd venture a guess that it would probably pull 235-240rwhp - but we'll probably never know because next time I dyno it's not gonna be stock.
The guys running the dyno stopped the pulls at 5250rpm. My tach needle reads high by 500rpm, which I forgot to tell them about. So although my torque curve was dropping by that RPM, Next time I'll have them spin it to 6250 or so. And they didn't turn the auto headlights off, so I couldn't get video, and there's like a quarter HP right there
The first pull (blue on the graph,) they couldn't get a good tach signal. So it ended up being worthless, but at least it's kinda funny to look at.
The second pull (green on the graph,) was the only good pull of the day. 241ft.lbs at 4600rpm, and it made 224hp at 5300rpm when the pull was stopped.
The third pull (red on the graph,) the motor was pretty damn heatsoaked by that time (their fan wasn't doing so well.) And it decided to run really rich (10.x AFR through most of the pull.)
So overall a fun day, and I was impressed with the torque. Being that these motors generally make peak power closer to 56-5800, and usually make very similar HP and torque numbers... I'd venture a guess that it would probably pull 235-240rwhp - but we'll probably never know because next time I dyno it's not gonna be stock.
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