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There are three kinds of 302s made from 1982-2001.
5.0L HO This engine was used in 1983-1995 Mustangs, Mark VII Lincolns, and some T-birds and Cougars. All Explorer 5.0L engines are 5.0L HO engines as well. They use the 351W firing order, 1-3-7-2-6-5-4-8. Except for the 1983-84 Mustangs, all of these engines are roller cam equipped. They use a reverse rotation water pump and front cover. The 1994-5 Mustang and all Explorers use a unique front cover and water pump.
5.0L Full Size Car This engine was used in 1982-1990 Crown Victoria and Grand Marquis. They use the 289-302 firing order, 1-5-4-2-6-3-7-8. Most of these cars are not roller cam equipped, however sometime in the early 1990s they started using roller cams but retained the 302 firing order. They use a standard (clockwise) rotation water pump and front cover.
5.0L Truck (except Explorer) These engines are similar to the Full Size Car engines, except they use different intake manifolds and camshaft profiles. They also use the 289-302 firing order, 1-5-4-2-6-3-7-8. They also began using roller cams sometime in the early 1990s. They use a reverse rotation water pump and front cover.
Check out faxonautoliterature. They carry dealer service manuals which would include a complete wiring diagram. I've used them before and had excellent service. Hope this helps.
Hello David. Just behind and above where the driveshaft goes into the rear differential you will find a 3/8" square holed plug. On an 83 you may need to scrape away a few layers of accumulated grease and oil to find it. Undo the plug and add some 80w90 gear lube until it comes to the bottom of the hole. Reinstall the plug and that's it!. Have fun with your Mustang.
i hate to say it but... i recommend pulling the engine out and putting it on an engine stand. while it is out replace crank seals and inspect freeze plugs.
In a 83 MUSTANG GT the correct answer is BOTH. As a 5.0L and a TURBO CHARGED 4 cyinder were offered.
1983 Mustang GT
Engine:
5.0L horsepower increased to 175 HP when 4V carb replaced 2V carb from 1982 (Holley 4180C series).
Exhaust system was revised (less restrictive).
4-speed SROD was only transmission available until early December 1982. In December, new 5-speed T5 became standard GT transmission (4-speed remained on option list).
Block and crank were revised to accomodate a 1-piece rear main seal in December 1982.
The new "Turbo GT" with a turbo charged 4 cylinder engine was available beginning late in the model year - 145 HP and featured the same suspension and other features of the V8 Mustang GT.
wow, are you missing a heat shield under the car at that point, or is new exhaust routed any differently than the stock system? I know the Florida state police had trouble w/ Mustangs starting fires on the median while parked in the grass doing radar and investigating accidents years ago, maybe about the year of your car. They lost several cars. I believe it was the catalytic converter that was torching the grass. How about installing a heat shield in the area you had the overheating? And don't park in the grass. Do not know what else could cause it though. good luck and let me know how you make out. countrycurt0
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