New project. 1985 F150 "Daily Driver"

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FordMan1988
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New project. 1985 F150 "Daily Driver"

Post #1 by FordMan1988 » Fri Dec 29, 2017 7:45 pm

I've hung around here a while, tried to learn a few things. I traded for an 85 300 a few years ago, just the motor. Well last week I picked up an 85 F150 with a 300 that grenaded. Rods are in the pan (they actally punctured the pan) $300. Couldn't pass it up, being that I have a 300 to put in it. Axle code 17 (2.47 gears), T170 4 speed (.78 OD) that's a crazy high top gear, leading me to believe this was one of the 30ish mpg trucks ford advertised for the 80s. I don't know what they actually got, I just have seen the old ads for them.

Pardon me as I actually skin questions actually skid decide the route to go, I'm thinking a complete rebuild would be best because my 300 has sat up and I do not know the mileage it has. I'd like to get decent mpg's (20 I think is a good goal) and make more power, something kinda fun, I like the 4 speed so it stays. Stock interior heck I'll leave the dents in the body. I've always felt a good 300 could run with any average 350 or 302. Lot of low end torque. Not trying to make a race truck, just a fun daily with some pep.
1994 Ford F150 302 EFI 4R70W 3.55s
1985 Ford F150 300 T170 2.47s
1969 Ford F100 360 NP435 3.25s

wallen7
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Re: New project. 1985 F150 "Daily Driver"

Post #2 by wallen7 » Sat Dec 30, 2017 10:52 am

A Offy C manifold with a 2bbl motorcraft or autolite carb from a 302 would be a good upgrade. The 302 carb should be the 108 venturi size. Keep the stock cam and put in the Cloyes gear set 1014 in the advance position and possibly a upgrade on the rocker arms. You might want to upgrade to the efi exhaust manifolds also.

TurboBronco
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Re: New project. 1985 F150 "Daily Driver"

Post #3 by TurboBronco » Tue Jan 02, 2018 5:19 pm

The Cloyes 1014 adjustable timing gear set has been discontinued according to the Cloyes website. :bang:
http://www.cloyes.com/Images/CloyesDisc ... dItems.pdf
1985 Ford F250 2WD, Bone Stock 300, T18 Four Speed, OEM intake, OEM Exhaust Manifold, Autolite Single Barrel Carb; 2.5" Exhaust from firewall back, Project in Progress!!

Lazy JW
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Re: New project. 1985 F150 "Daily Driver"

Post #4 by Lazy JW » Tue Jan 02, 2018 5:45 pm

FordMan1988 wrote:... Axle code 17 (2.47 gears), T170 4 speed (.78 OD) that's a crazy high top gear...


Yikes! :shock: :bang: :twisted:

I do hope that everywhere you drive is downhill :nod: My 81 F-150 has 2.75's and a T-18 granny tranny and it is a miserable pig to drive in traffic. I cannot fathom how nasty a set of 2.47's would be.
Have fun!
Joe
"The White OX" 1974 F-350 300-6, Stock single exhaust, Carter YF, T-18A, Dana70 w/4.11, Flatbed dually w/dump bed. "Where no oxen are, the crib is clean, but much increase is by the strength of the ox" (Proverbs 14:4)
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Shorty
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Re: New project. 1985 F150 "Daily Driver"

Post #5 by Shorty » Tue Jan 02, 2018 6:41 pm

I have an 83 with the 4 spd od aluminum toploader tranny. It has 3.55 gears in an 8.8 axle. It will smoke the boots off in first and chirp second but there is a huge space in the gearing between 2nd and 3rd. (like driving a five speed without a 3rd gear) Fourth (od) gets me doing over 100 km/h (60ish mph) well under 2000 rpm. the truck gets better fuel economy than my mininvan when I drive it nice. I have a m5od I hope to try in it some day when I have time.

The 2.47 ratio must be to set land speed records with an overdrive as long as you have a good stiff tailwind.
85 F150 on 78 bronco frame C6 np205 welded dana44 front, trussed posi nine inch rear. EFI exhaust manifolds into one 2 1/2" rolls on 35x12.5x15 Maxxis Trepador.

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THE FRENCHTOWN FLYER
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Re: New project. 1985 F150 "Daily Driver"

Post #6 by THE FRENCHTOWN FLYER » Tue Jan 02, 2018 7:05 pm

Don't laugh at me - I use 2.47 rear gears in my roadster pickup drag truck.

Hooks in a mudslide. Going thru the lights its only turning 5000 RPMs.

Runs hi 11s in the quarter. Two-time track champion even after multiple attempts by competitors to have it banned and subsequent rules changes.

My plans were to eventually change over to 4.56 gears and run 10.90 Super Street / Hot Rod class but IHRA banned me from entering H/R.
FORD 300 INLINE SIX - THE BEST KEPT SECRET IN DRAG RACING

Lazy JW
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Re: New project. 1985 F150 "Daily Driver"

Post #7 by Lazy JW » Wed Jan 03, 2018 10:01 am

THE FRENCHTOWN FLYER wrote:Don't laugh at me - I use 2.47 rear gears in my roadster pickup drag truck.

Hooks in a mudslide. Going thru the lights its only turning 5000 RPMs.

Runs hi 11s in the quarter. Two-time track champion even after multiple attempts by competitors to have it banned and subsequent rules changes.

My plans were to eventually change over to 4.56 gears and run 10.90 Super Street / Hot Rod class but IHRA banned me from entering H/R.


I have no doubt that tall gearing is appropriate for your drag racing application; in my daily driver I much prefer gentle launches without needing to be oh-so-very careful with the clutch to avoid the embarrassment of an inadvertent stall. Revving it up and dropping the clutch does avoid that :mrgreen: :D
"The White OX" 1974 F-350 300-6, Stock single exhaust, Carter YF, T-18A, Dana70 w/4.11, Flatbed dually w/dump bed. "Where no oxen are, the crib is clean, but much increase is by the strength of the ox" (Proverbs 14:4)
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1986F150six
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Re: New project. 1985 F150 "Daily Driver"

Post #8 by 1986F150six » Wed Jan 03, 2018 12:16 pm

My son's 1984 F150 with 4 speed manual OD [4.9L] and 2.47 rear gears repeatedly returned 26 mpg @ 65 mph [before gasohol].

It idled @ 8 mph and if you even saw a hill in front, you might as well shift down to 3rd. It could cruise @ 65 mph in 3rd and you would barely hear the engine.

This truck was delivered with the very tiny spoiler under the front bumper.

pmuller9
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Re: New project. 1985 F150 "Daily Driver"

Post #9 by pmuller9 » Wed Jan 03, 2018 9:29 pm

FordMan1988 wrote:I've hung around here a while, tried to learn a few things. I traded for an 85 300 a few years ago, just the motor. Well last week I picked up an 85 F150 with a 300 that grenaded. Rods are in the pan (they actally punctured the pan) $300. Couldn't pass it up, being that I have a 300 to put in it. Axle code 17 (2.47 gears), T170 4 speed (.78 OD) that's a crazy high top gear, leading me to believe this was one of the 30ish mpg trucks ford advertised for the 80s. I don't know what they actually got, I just have seen the old ads for them.

Pardon me as I actually skin questions actually skid decide the route to go, I'm thinking a complete rebuild would be best because my 300 has sat up and I do not know the mileage it has. I'd like to get decent mpg's (20 I think is a good goal) and make more power, something kinda fun, I like the 4 speed so it stays. Stock interior heck I'll leave the dents in the body. I've always felt a good 300 could run with any average 350 or 302. Lot of low end torque. Not trying to make a race truck, just a fun daily with some pep.


This is an interesting project.
The final drive ratio with the OD in is 1.93

There are several ways to go.
You can focus on extreme low rpm torque and pull the high gear.
Go for more horsepower and simply downshift when needed.
or do head work and go for low end torque with wide power band and horsepower.

The 1985 head has pedestal mount rocker arm.
Scorpion makes a high ratio pedestal mount roller rocker that can be used to increase lift on the short duration high torque cams.

Any Idea which way you want to go?

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