86 150 rebuild
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Joined: May 2003
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86 150 rebuild
I own an 86 150 4x4 4spd, 300 6 that is due for a rebuild. I havent owned the truck long and im not very familiar with all of the mods for this motor. I would like to convert carbs / intake / exhaust , clutch ... while im rebuilding the motor. I notice that some have done this already and im curious if they have noticed a dramatic increase in power or should i be looking at a 302 or 351 swap to this truck. I use this as a daily driver /toy / hobbie. I do not want a 500 hp ride but i do want more power out of this rebuild. Could someone please post there opinions and some links for 300 performance parts. Also , if i modify the 300 with intake , carb how bad can i expect my mileage to get ? Will a v8 be better? Im getting about 13 mpg now.
Someone had mentioned cliffords intake in an old post but i havent been able to find a link.
Thanks
Someone had mentioned cliffords intake in an old post but i havent been able to find a link.
Thanks
Last edited by dennis333; Aug 2, 2003 at 03:13 PM.
Senior User
Joined: Jul 2003
Posts: 318
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From: North of Toronto, Ontario
86 150 rebuild
If you get a 4bbl intake and carb, a new cam, headers and exhaust, you can expect to see many 302's in your rear view mirror.
If that new 4bbl is wide open all of the time, you can expect to get poor fuel milage, otherwise it shouldn't vary too much.
If that new 4bbl is wide open all of the time, you can expect to get poor fuel milage, otherwise it shouldn't vary too much.
New User
Joined: Jun 2003
Posts: 6
Likes: 0
86 150 rebuild
Just installed a Ford rebuilt engine, with Offenhauser intake, Holley 390 vac. secondary, duraspark 2 ignition in my 86. Up until i blew the head, it ran, but was slow. I believe some of the problem was a lot of vacuum leak, but other than that it ran pretty good for 173k miles.
The rebuilt block, intake, carb, and ignition were definitely worth the time and money. I also removed all of the emissions equipment, since it was easier to take it all off than hook it up to the new carb and such. Runs 100% better than it had in the last 3 years.
My mileage was about 15mpg 3 years ago. The last few months I had been getting about 13. With all the work done, I get 12 ~ 13 now. I am also only 2wd, no O.D. though.
I think if i put a stronger spring in the secondary dashpot, the milage will be close to the original (if i drive it nice).
Can anyone recomend a good spring size for the Vacuum secondaries?
The rebuilt block, intake, carb, and ignition were definitely worth the time and money. I also removed all of the emissions equipment, since it was easier to take it all off than hook it up to the new carb and such. Runs 100% better than it had in the last 3 years.
My mileage was about 15mpg 3 years ago. The last few months I had been getting about 13. With all the work done, I get 12 ~ 13 now. I am also only 2wd, no O.D. though.
I think if i put a stronger spring in the secondary dashpot, the milage will be close to the original (if i drive it nice).
Can anyone recomend a good spring size for the Vacuum secondaries?
