Shane Cottle ran a late model a handful of times at Eldora
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Cirf... You may remember that when AJ wS racing USAC stocks on the dirt there was little difference between those cars and the regular Saturday night race cars. We had lots of ex USAC cars around here including the 68 Ford I ran that started life as a 61 Ford on the USAC circuit.Member of the Luxemburg Speedway Hall of Fame
Class of 2019
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the jet jeff sheppard drove gary stuhlers back up car at the conococheague 100 in the late 90s and sucked at it.
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I've worked around Sprint and LM engine shops... A top of the line Sprint engine is in the 870-915hp range, and the best LM engines (RY45) are ~840-860hp on a stingy dyno. Most of your other 4.4 bore spacing stuff is 730-800 because some lousy builders just like to see a big number, which does NOT mean the engine will be fast. Dyno numbers are near worthless.Originally posted by CIRF View PostJack Hewitt, who won a bunch of races in both 410 sprints and dirt late models, would take issue with your reasoning in reference to 410 sprint cars being easier to drive than dirt late models. He says in his biography just the opposite. 410 sprint cars also have a much steeper power to weight ratio: 410 sprint cars are required to weigh 1350 lbs. with driver and the engines are making between 825 and 875 horsepower. WoO dirt late models are required to weigh 2300 lbs. and the engines are making around 800 horsepower (I might be a bit generous regarding horsepower).I remember Steve Barnett racing a USAC Silver Crown car at Terre Haute years ago but I don't remember if he drove sprinters or not.
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It's been a while since I've been very deeply involved with engine performance numbers. I'm only going by what those that make their living with some of these engines are saying about the numbers they are seeing. If they are wrong then I'm wrong. It wouldn't take much for someone to be somewhat more learned in reference to engine dyno numbers. It appears that you more than fill that bill and I have little doubt you know what you're talking about.Originally posted by Necrosis View PostI've worked around Sprint and LM engine shops... A top of the line Sprint engine is in the 870-915hp range, and the best LM engines (RY45) are ~840-860hp on a stingy dyno. Most of your other 4.4 bore spacing stuff is 730-800 because some lousy builders just like to see a big number, which does NOT mean the engine will be fast. Dyno numbers are near worthless.
Dyno numbers can pretty much show what the operator wants and for the honest and objective dyno people they are as much of a baseline comparison tool as they are accurate. I run into this being the case with equipment that I own and work with in association to my business. What I use the numbers for is a whole different universe from competitive racing engine numbers, however, the basic comparison premise is about the same.
We're basically in the same ballpark numbers-wise. We appreciate you expertise.
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