1986F150Six
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The Truck of Doom: An Occasional Build Thread
1986F150Six replied to Dorsai's topic in Bullnose Enthusiasts Forum
Friends Offering Repair Details -
We took the pirate smiley away! And it would have been perfect for this. Good selection, Gary!
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Input from numerous forum members on another thread I started regarding the joy of driving a big six cylinder powered truck has spurred me to want to share information I have gleaned from a retired Ford Engine Development Engineer. As you know, this engine became available in 1965 and was in production in vehicles until 1996. Some believe it was sold for industrial applications [generators, irrigation pumps, chippers, airport tugs, etc.] a little longer. It was never offered in a passenger car as was its little brother, the 240. Towards the end of its production run [1980+], there were numerous prototype pieces manufactured and tested for the 300/4.9L engine. Ford does not release these documents and the general practice was to destroy all prototypes once testing was completed and the decision was made to not use this in production, so I want to list what was told to me as a lasting record. Any errors are on "me" as I am repeating what I have had the privilege to be told and am not at the technical level of the one telling me this. Sometime [probably 1980-1983], a two barrel log intake manifold was made. It looked just like the 1 barrel manifold, but had two holes arranged parallel to the length of the log. This would have used a Motorcraft 2100 or 2150 carburetor. Later, with fuel injection becoming available, "engine displacement management" was developed. Under ideal conditions [light load], cylinders could be disabled so the engine ran on less than 6 cylinders. This was to enhance fuel mileage. Several engines were turbocharged. These turbocharged six cylinder engines had more power than the same model year 460/7.5L engines. An iron crossflow head was developed for improved emissions and fuel efficiency. All of the above were never put into production, however for a while, Ford did offer an aluminum billet head for drag racing only [no cooling passages] in their performance catalog for Comp. racers. The billet heads were milled out of a solid piece of high strength aluminum and were very costly - about $9000 bare. They were able to flow over 400 cfm. Enjoy, fellow six cylinder affectionados!
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Why drive a truck with a big six cylinder?
1986F150Six replied to 1986F150Six's topic in Bullnose Enthusiasts Forum
I do not know the answer to that. The crossflow head I have mentioned was never offered to the public. -
Rear Bumper Brackets (Sport Bumper)
1986F150Six replied to salans7's topic in eBay, Craigslist, Facebook, & Kijiji Finds
Great find! -
Thank you! No photos are needed.
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Transmission Swap Suggestions
1986F150Six replied to Ray Cecil's topic in Bullnose Enthusiasts Forum
X2 what he said! -
Greetings! I am interested in your exhaust modifications. Were you able to properly flare the end of the 2 1/2" pipe to be able to mate with the exhaust manifold "ball"? What type of muffler did you select? Thank you!
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1953 FORD F100 V8 3 speed
1986F150Six replied to DanielAndrew's topic in eBay, Craigslist, Facebook, & Kijiji Finds
Alabama did not issue titles before 1975. -
Why drive a truck with a big six cylinder?
1986F150Six replied to 1986F150Six's topic in Bullnose Enthusiasts Forum
One of the reasons Ford developed the crossflow head for the 4.9L was a warranty issue. The fuel injectors were exposed to heat soak, since located above the exhaust manifolds, when the engine was cut off. A temporary fix was a cooling fan blowing across the injectors and continuing to run after the engine was cut off. There were other prototypes as well [variable displacement and turbo]. Truth in reporting [or at least, trying to] Steve83 wrote: ...a warranty issue. The fuel injectors were exposed to heat soak, since located above the exhaust manifolds, when the engine was cut off. A temporary fix was a cooling fan blowing across the injectors and continuing to run after the engine was cut off. Are you saying the head was changed between '88.5 and '89? Because the injectors are in the same location on my '95s, and they don't heat-soak or fail. And of all the people to whom I've recommended deleting the '87-88.5 4.9L injector blower (which is probably in the low hundreds); none have mentioned any problems since. Walk softly and carry a BIG SIX!!! https://www.supermotors.net/registry/2742#album Memphis, TN, USA, Earth, Milky Way Steve83, The same retired Ford engineer said that the crossflow head did address the higher than desired warranty claims regarding injectors, but the primary reason for the development of this head was for improved fuel efficiency and reduced emissions. David -
Draw through vs Blow through 300 I6
1986F150Six replied to Ray Cecil's topic in Bullnose Enthusiasts Forum
This link is to a thread [with photos] discussing a draw-through system marketed by AK Miller back around 1980: https://fordsix.com/viewtopic.php?t=74249 -
Everybody, have a fun and safe holiday!
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Center cap [E2TZ-1130-C] - NOS
1986F150Six replied to 1986F150Six's topic in eBay, Craigslist, Facebook, & Kijiji Finds
Like this? https://www.ebay.com/itm/Set-of-Ford-Center-Caps-for-Alloy-Wheels-1977-78-79-80-Bronco-F-100-F150-Truck/303207997229?epid=1643671609&hash=item46989adf2d:g:HgwAAOSw~lRchbSC -
Which Grille Do You Think Looks Better on My Truck?
1986F150Six replied to LARIAT 85's topic in Bullnose Enthusiasts Forum
I would stay with the amber. The good thing, Rick, is that what is being discussed [grill / turn signals / hood letters] are all items which if changed, can be easily returned to the previous. There is no damage done... it's all what YOU like.