Thread: Mustang Times?
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09-29-2005 12:07 AM #1
Mustang Times?
I am working on a 1985 Mustang 5.0 Notch (coupe) and have some questions. We just went to the track and the dyno. At the track it ran a 15.07 at 89 mph. Then on the dyno made 181 horse/ 255 lb. ft. of torque. Since then we have added 3.55 gears (was running 2.73's), edelbrock torker intake (was stock), and a 75 shot of nitrous. Also to control the wheel hop, we added lower control arms. Any ideas about the times the car may get now? Trying to get my buddy into shape so that he can take care of a long time grudge match. Sure would hate to lose. For some reason I doubt that we will. The last time we ran him, he ran a 15.3. We just really want to beat him bad this time. Sure we beat him before, but a full second or more sure would piss him off. Thanks alot!!!!
Also, do you know how much one of these cars weighs?? Just curious
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10-04-2005 11:45 AM #2
Without changing the cam that Torker intake is overkill, it's gonna destroy your low end power. You'd be better off with something like an Edelbrock Performer, Performer RPM or Holley Street Dominator.
Everythings got to work together as a package - intake, carb, cam, exhaust, rearend gears, etc. The power range of the stock cam isn't gonna work as well with the Torker as it would with the others. The gears will help a lot though.
Make sure it's timed just right too, follow this little set of rules:
Ignition timing has to follow the rpm curve. At idle, ignition timing should be around 6-10 degrees BTDC (V-8 engines). At 3,500 rpm, the ignition timing should jump to 39-41 degrees BTDC. Never push the total advance beyond 41 degrees BTDC. Adjust the vacuum advance so it doesn't come on too quickly or too slowly. Too quickly and you'll get detonation and spark knock. Too slowly and your Mustang will fall on its face. Spark timing happens in two places: the vacuum advance and centrifugal advance. The vacuum advance does its work during acceleration. Centrifugal advance comes into play once the engine arrives at higher rpm. The vacuum advance works during acceleration, giving way seamlessly to the centrifugal advance when the car reaches cruising speeds. You can change the springs in the distributor to make the total advance happen at a lower rpm.
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance