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my 72Matador |
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matty 401 
AMC Addicted 
Joined: Jul/06/2007 Location: Iowa Status: Offline Points: 1727 |
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 Topic: my 72MatadorPosted: Sep/20/2020 at 6:43pm |
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ran my Matador at our 1/8 mile track ran a 8.69 at 83 mph std bore 401 stock converter trans and 456 gears 401 has a summit 8601 cam torquer intake 750 eldo carb and eldo heads i do not think that is to bad just swapped the 456 to 354 gears will run it again friday from the seat of the pants it pulls harder and longer with the 354 so will it be quicker ? and street tires and mufflers thanks
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72 matador 401 the beast
79 concord 2 door 72 matador 304 grasshopper 68 Rogue 406 93 Cherokee 4.0 5 speed |
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AMoCoLite
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Joined: Dec/23/2015 Location: North Texas Status: Offline Points: 441 |
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Posted: Sep/21/2020 at 9:28am |
Throw a pic up of your car if you get a chance! Good luck!
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PROSTOCKTOM
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Joined: Jun/20/2010 Location: Indiana Status: Offline Points: 2450 |
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Posted: Sep/21/2020 at 1:08pm |
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A few weeks ago a girl showed up at out local track with a new 5.0 Mustang and she ran 8.70 with it, so I would say your doing all right. Any idea what your car weighs and with you in it?
Tom
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Molnar Technologies Full Service Dealer - Crankshafts & Connecting Rods
1969 AMC Rambler Rouge Race Car 1974 AMC Hornet Hatchback, Wally Booth Outlaw Nostalgic Pro Stock Race Car Project |
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Ken_Parkman
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Joined: Jun/04/2009 Location: Ontario Status: Offline Points: 1813 |
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Posted: Sep/21/2020 at 1:13pm |
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Gears, converter, and traction can be a complex subject. How the car launches - 60' - has a huge impact on the ET, but not so clear effect on how the car "pulls". Changes the noise, the drivability and the perception, but power is power (not torque which is essentially irrelevant in an engineering sense, and that is a complex subject!) so if the engine operating range power and weight is not much changed neither will the acceleration.
But on the starting line gears and converter have a HUGE effect on the engine available power. An engine is simply physically incapable of making much power at low rpm. So unless you have a traction problem anything that gets the engine into it's power band quicker will make a difference in 60' and therefore ET. So with a stock converter and a heavy car and assuming it gets traction your gear change will very likely make it ET slower as the engine cannot get into it's powerband quickly. Be it will be a lot more drivable on the street though. The way to make a good ET is make sure there is maximum traction, converter the car to get the engine in it's powerband (not torque - way above torque peak), than gear it to traction limit or top end rpm, whichever is less.
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matty 401
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Joined: Jul/06/2007 Location: Iowa Status: Offline Points: 1727 |
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Posted: Sep/22/2020 at 6:47pm |
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i have another 727 trans with a 2500 stall the one in it now is a stock unit from 72 came with the car lol maybe over the winter swap the other trans and stall into it
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72 matador 401 the beast
79 concord 2 door 72 matador 304 grasshopper 68 Rogue 406 93 Cherokee 4.0 5 speed |
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matty 401 wrote: