I bought a 79 F150 yesterday, 302 w/ 3sp/OD manual. F15GREA3889 axle code: 13J
I'm wondering what rearend ratio I probably have.

BBT

 

[FONT COLOR="#0000ff" SIZE="-1" FACE="Tahoma"]Here is what I am able to discern for you:

Year: 79
Series: F150 - 4x2 Pickup
Engine: V-8 302 cid. 2v
Assembly Plant: San Jose
Rear Axle: 2.75 gear ratio Ford[/FONT][BR]

http://www.dealerconnection.com/DealerConnection/Themes/Standard/Ford/lgo-ford.gif[BR][BR]
[FONT COLOR="#ff0000" SIZE="+2" FACE="Bassett"]Stock Man[/FONT]
[FONT COLOR="#0000ff" SIZE="-2" FACE="Tahoma"]
1967 F-250 FE 390 4wd LWB Styleside
1966 F-250 I6 240 2wd LWB Flareside
http://www.hometown.aol.com/tbeeee

 

SM, I bet BBT is single, or when his wife finds all these projects that he has, someone's gonna pay dearly. hehehe


John

66 F100s
In the still cool hours of the night, you can hear chevys rusting away.

 

[FONT COLOR="#0000ff" SIZE="-1" FACE="Tahoma"]Perhaps he's "just holding it for a friend" That's been known to work once.[/FONT][BR]

http://www.dealerconnection.com/DealerConnection/Themes/Standard/Ford/lgo-ford.gif[BR][BR]
[FONT COLOR="#ff0000" SIZE="+2" FACE="Bassett"]Stock Man[/FONT]
[FONT COLOR="#0000ff" SIZE="-2" FACE="Tahoma"]
1967 F-250 FE 390 4wd LWB Styleside
1966 F-250 I6 240 2wd LWB Flareside
http://www.hometown.aol.com/tbeeee

 

OK I admit it. Single. This truck looks like it has the potential to get some decent gas mileage between the OD gear and the 2:75. So far the problems are:
- A leaking heater core. OK so long as it's off. I asked at an auto parts store about replacing and they asked whether I have a high output heater or not. Does it matter what goes in?
What's the difference? Both my other pickups have no trouble keeping me warm.
- The rear end appears to have a lot of backlash. I can rotate the driveline against it yet the U-joints appear tight.
-It appears to have a leak where the powerbrake booster meets the mastercylinder.
-The engine seems to hesitate when reaching cruising speed in 3rd gear and backing off the gas. I'm thinking that perhaps there is a vaccuum leak related to the brake booster. I drove it real late last night when it was very cold out, and when idleing down while braking, the engine was dying.
-Endplay on the waterpump pulley-and bearing noise from one of the accesories. I haven't gotten a listening stick out there yet, but it sounds like maybe the alternator. The waterpump pulley does wobble a little, and you can pull it in and out a little. I have a brand new smallblock water pump in the bed of my dead truck. And I have a couple of good alternators.
-The second gear syncro doesn't work so good.

Does anybody know the gear ratios of the 4spOD manual? Is 3rd gear 1:1? I suspect my speedo is 5-10mph off and if I know that 3rd is 1:1` and I hook up a tach I can confirm. Also will this tranny bolt into a FE bellhousing? I know this tranny came on M block's as well as 300-302. I test drove a 400 with one last year. According to my Haynes manual this tranny was introduced in 78.

BBT
69 F100 2wd 390/T18
76 F100 2wd (vacant)
79 F150 2wd 302/3sp+OD manual
89 (um a chevy)

 

Are you sure you didn't borrow my truck for the past few days??...haha Most of it sounds the same except my heater fan doesn't work instead of a leaking core. And mine blows oil from the breather caps....