KyleM Posted December 20, 2025 Posted December 20, 2025 I’m looking for a good candidate to pull in the 7000 class. Main competition seems to be AC 190’s. Like to keep it fairly stock appearing. Currently have a 560D and it just doesn’t have enough to keep up with those 190’s. I’m leaning towards a 666 with the 312. Any other models able to get down that light without stripping everything completely off and make enough power? Quote
Sledgehammer Posted December 20, 2025 Posted December 20, 2025 The earlier built 686's had the 312 also and would be basically the same physical machine. Found this pic years ago of one but I'm guessing it was over 7K in that pic. 1 1 Quote
Red666 Posted December 20, 2025 Posted December 20, 2025 The 312 can be made into a 360 and would give the rear end a good test. Should be a fun project. Quote
TeachersPet1066 Posted December 21, 2025 Posted December 21, 2025 6 hours ago, KyleM said: I’m leaning towards a 666 with the 312. I can’t find the videos…I glanced at FB and YouTube - edit - check 13:25 mark check out northwest pa pullers light tough farm. http://www.pulloff.com/phorum/read.php?2,261123,261142 Quote
brewcrew Posted December 21, 2025 Posted December 21, 2025 17 hours ago, KyleM said: I’m looking for a good candidate to pull in the 7000 class. Main competition seems to be AC 190’s. Like to keep it fairly stock appearing. Currently have a 560D and it just doesn’t have enough to keep up with those 190’s. I’m leaning towards a 666 with the 312. Any other models able to get down that light without stripping everything completely off and make enough power? What are the rules you need to follow? My 686 with a narrow front and the three point removed will pull 7500 in second gear with 18.4-38 radials. But around here unless you have big cubes it’s tough to compete over 4mph. There is one running a turbo in the 8000 8 mph class. But he may also have a 414, as that is the max cube turbo to compete with the big cubes natural aspirated. Quote
Mark (EC,IN) Posted December 21, 2025 Posted December 21, 2025 16 hours ago, Sledgehammer said: The earlier built 686's had the 312 also and would be basically the same physical machine. Found this pic years ago of one but I'm guessing it was over 7K in that pic. That is Jerry Vandorpes tractor and I'd guess he is weighted up to pull 7500 he usually ran in the 5/5500# class. 1 Quote
KyleM Posted December 21, 2025 Author Posted December 21, 2025 9 hours ago, brewcrew said: What are the rules you need to follow? My 686 with a narrow front and the three point removed will pull 7500 in second gear with 18.4-38 radials. But around here unless you have big cubes it’s tough to compete over 4mph. There is one running a turbo in the 8000 8 mph class. But he may also have a 414, as that is the max cube turbo to compete with the big cubes natural aspirated. I think it’s 6 mph. No turbo unless it came from factory with one Quote
Mark (EC,IN) Posted December 21, 2025 Posted December 21, 2025 29 minutes ago, KyleM said: I think it’s 6 mph. No turbo unless it came from factory with one I don't want to be a killjoy here, but if some of the tractors in the class have turbos and you are not allowed to add one to the 666/686, you are essentially spitting in the wind! The tractors you are considering are in the 70-75-horse range. By spending some money, you might get to the 85-90-horse range with a naturally aspirated engine. Spending no money at all, those 190XTs can twist a screw a little on the pump and have 150 horsepower. They can also spend a little money and bolt on a turbo that looks completely stock and get too 200 horsepower. It depends on how badly you want to be competitive. 2 1 Quote
brewcrew Posted December 22, 2025 Posted December 22, 2025 4 hours ago, KyleM said: I think it’s 6 mph. No turbo unless it came from factory with one To run competitively in my area at 6 mph, you would need at least 466 cubes naturally aspirated, preferably bigger. Or a 501 gas in something like a 560 or wk-40 if they make you run “stock” Quote
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