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  #1  
Old 03-20-2011, 02:27 PM
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'79 to '77 and older grill swap

This has come up enough in the past I decided to document the process. One of the first things I noticed is hardware size. The '79's have 1/4-20 bolts for most everything and the older grills have 5/16-18 bolts holding most everything together. You can interchange the hardware if you use the correct clips for the correct bolts.

Secondly, All the wires are plenty long enough that you don't need to add anything to the wiring harness. The older style turn signals have sockets that are pressed into the buckets that bolt into the grill shell. The '78-9 grills have a plastic lens/bucket that's all one piece that a socket twists into for the bulb.

Ok, let's get started........

Here's what we started with.... ('79 with a tube grill)

Click the image to open in full size.

Pop the hood and take all six bolts out of the top of the grill. Take the headlight bezels off and remove the hidden screws under them. There are three bolts you have to get at from inside the fenderwell. Yup, you have to take that loose as well. You don't however have to take it out.

I tried to just take the bumper loose on one side to get the grill out, but after a while, it proved to be easier to just remove it all together.

Click the image to open in full size.

Don't forget the bolt in the middle bottom of the grill and the two on either side at the bottom. All three are behind the bumper.

As I said, the wiring harness is plenty long enough, you just have to splice the pig tail from the new turn signal bucket into the existing harness. It would've been better to use a male/female spade connector so you could unplug it in the future, but I did this.

Click the image to open in full size.
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Alan Fenstermaker
'73 F-100 360, 3 on the tree 2WD (Uncle Jesse's truck)
'75 F-250 468, C6 Monster Truck (Earthquake III)
'78 F-250 Ranger 460, C6 2WD
'79 F-200 300-6, 4 spd. 4x4 (Alice)
'79 F-150 400, C6 4x4 (Ka'Bluey)
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  #2  
Old 03-20-2011, 02:42 PM
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There are some differences between the '79 grill shell and the '77. The upper mounting holes on the outside are just different enough to not work. Here's a shot of the new grill lined up side to side with the body. You can see the where the old mounting positions are.

Click the image to open in full size.

All the side mounting holes are the same, so you don't need to drill those over again.

Click the image to open in full size.

The old headlight buckets are VERY different from the new ones. The '79 headlights mount about two inches higher than the '77 and older. That's why this is a good trick on lifted trucks. The older style grill brings your headlight angle down so you can have a little taller truck and still be legal.

I had to put the grill shell in place, hold the new headlight bucket in place, then scribe the new hole locations. I drilled 3/8" holes so I had a little wiggle room to fine tune the placement of the headlights.

Here's a shot of the scribe marks in each corner of the photo frame here....

Click the image to open in full size.

I had to drill pilot holes, because the 3/8" drill bit walked around too much. Here's a shot with the new holes drilled. See the sharpie arrow marks? Those are the new mounting holes.

Click the image to open in full size.

I loosely put everything together to make sure everything lined up. Looks good so far, so I tightened it down.

Click the image to open in full size.

As I said before, the upper holes are just different enough to not work. I just drilled new holes in the grill shell since they'll be hidden anyway.

Click the image to open in full size.

Ok, looks like we're all done. Everything in and lined up nice.

Click the image to open in full size.

Just one more thing.....

Now that I can close the hood, I notice we have a Ford Ford.

Click the image to open in full size.

I popped the letters off and pushed the plastic keepers into the hood. When I do the body work, I'll weld them shut and grind them smooth so you won't ever be able to tell I was here.

Click the image to open in full size.

And here we are at the end result. A '77 grill in a '79 Truck. Woo Hoo!

Click the image to open in full size.
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Alan Fenstermaker
'73 F-100 360, 3 on the tree 2WD (Uncle Jesse's truck)
'75 F-250 468, C6 Monster Truck (Earthquake III)
'78 F-250 Ranger 460, C6 2WD
'79 F-200 300-6, 4 spd. 4x4 (Alice)
'79 F-150 400, C6 4x4 (Ka'Bluey)
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  #3  
Old 03-20-2011, 04:09 PM
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mhmm much better! good job
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76 f250 cummins, 74 f250, 78 supercab short bed, 2010 fusion, 89 f250
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  #4  
Old 03-20-2011, 07:34 PM
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I agree. '77 is my favorite style grill. When I'm completely done with the truck, it'll look like my first dent. (The one that I shouldn't have sold)

Click the image to open in full size.
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Alan Fenstermaker
'73 F-100 360, 3 on the tree 2WD (Uncle Jesse's truck)
'75 F-250 468, C6 Monster Truck (Earthquake III)
'78 F-250 Ranger 460, C6 2WD
'79 F-200 300-6, 4 spd. 4x4 (Alice)
'79 F-150 400, C6 4x4 (Ka'Bluey)
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  #5  
Old 03-21-2011, 07:46 AM
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77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of
Are going to leave the 79 bumper on it or do you need a 77? Looks good and nice write up also, sorry I kept forgetting about the dang park light lens.

Do you need some spare inserts incase you want to go black out on them?
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77&79 F250 Rich & Penny
77 351M auto, a/c, add a leaf 33x12.50's
78 (79 headlights) 460 4 spd, 4", a/c and 35's
79 351M 4spd 6" Skyjacker Edelbrock-Holley-Hedman 35's
99 Ranger 4x4, 98 Expedition 4x4, 73 Bronco Hillbilly-Bug
71 Bronco 302 35" Boggers 5.58 gears spool/locker
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  #6  
Old 03-21-2011, 08:06 AM
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No sweat Rich. I stumbled over a guy like your junk yard down here. I'm all set on dent parts forever. You can't swing a dead cat without hitting a dentside in his yard. If anyone needs anything, let me know. The yellow truck is a bad picture. Those inserts are actually gray and black, it's just the picture was dark. As far as the bumper, if you have one laying around, let me know, but don't go out of your way for me. My bumper is still nice, and only old Ford truck guys will notice it's a '79 bumper.
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Alan Fenstermaker
'73 F-100 360, 3 on the tree 2WD (Uncle Jesse's truck)
'75 F-250 468, C6 Monster Truck (Earthquake III)
'78 F-250 Ranger 460, C6 2WD
'79 F-200 300-6, 4 spd. 4x4 (Alice)
'79 F-150 400, C6 4x4 (Ka'Bluey)
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  #7  
Old 03-21-2011, 08:15 AM
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looking good alan...i like the look as long as you keep foreign objects off the plastic parts....... a 13 yr. old kid is wanting my old green bumpside..i hate to sell it in a way its been part of the landscape around here since the 80's.. he almost crapped when i told him i wanted 750.00 for it anyway...i am thinking of doing a different grille in it like maybe a 67 style..i have some parts but time is the killer for me, when you get a few minutes come on down and show me how its done....ha ha ha then maybe i'll make it my daily driver again, get me outta this chevy wanna be truck
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71 f100 "rip van winkle" been asleep for 25 years
300-6 npt435.. 20mpg avg. took many years to get that patina just right
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  #8  
Old 03-21-2011, 08:37 AM
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I'll see if I can steal away this weekend, RC.
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Alan Fenstermaker
'73 F-100 360, 3 on the tree 2WD (Uncle Jesse's truck)
'75 F-250 468, C6 Monster Truck (Earthquake III)
'78 F-250 Ranger 460, C6 2WD
'79 F-200 300-6, 4 spd. 4x4 (Alice)
'79 F-150 400, C6 4x4 (Ka'Bluey)
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  #9  
Old 03-15-2012, 10:45 AM
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serge duguay
1978 f-150

1978 Ford F-150 Pickup Truck - Bathurst Cars For Sale - Kijiji Bathurst Canada.

Here the truck i want to buy for 1500 what do you guy's think ?

I offer him 500 but he refuse. He said he have a 460 with the tranny and a 3/4 ton front differential to convert 4X4 but is more than 1500 for everything.
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  #10  
Old 03-15-2012, 11:33 AM
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77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of
Ah.... they do not just convert at the snap of the ol fingers, its way more complicated then that. If you want a 4x4 you would be better off just buying one already 4 wheel drive.
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77&79 F250 Rich & Penny
77 351M auto, a/c, add a leaf 33x12.50's
78 (79 headlights) 460 4 spd, 4", a/c and 35's
79 351M 4spd 6" Skyjacker Edelbrock-Holley-Hedman 35's
99 Ranger 4x4, 98 Expedition 4x4, 73 Bronco Hillbilly-Bug
71 Bronco 302 35" Boggers 5.58 gears spool/locker
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  #11  
Old 03-15-2012, 11:46 AM
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serge duguay
I'm looking for a truck to install my 400. Don't want to convert 4X4. But i'm willing to spend time, i just build my garage last fall. A 302 to 400 involve what ?
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  #12  
Old 03-15-2012, 03:27 PM
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77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of
302 is a small block and the 400 is a big block, so you would need a different bell housing to match your transmission to the big block motor if thats possible?

Locate some eng towers or perches ect...maybe a different crossmember for the trans?

I would hit the eng forums and get it from the guys in there, since I am out of suggestions.
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77&79 F250 Rich & Penny
77 351M auto, a/c, add a leaf 33x12.50's
78 (79 headlights) 460 4 spd, 4", a/c and 35's
79 351M 4spd 6" Skyjacker Edelbrock-Holley-Hedman 35's
99 Ranger 4x4, 98 Expedition 4x4, 73 Bronco Hillbilly-Bug
71 Bronco 302 35" Boggers 5.58 gears spool/locker
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  #13  
Old 03-16-2012, 05:12 AM
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serge duguay
I already have an auto transmission with my 400, it came from a 77 truck 4 door, i think it's a fmx.
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  #14  
Old 03-16-2012, 05:29 AM
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serge duguay
http://www.ford-trucks.com/forums/pi...ictureid=21339
The engine have rebuilt aussie head with ss valves and roller rocker, edelbrock intake with 600cfm... everything is new or rebuilt exept the distributor.
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  #15  
Old 03-16-2012, 06:38 AM
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I would say its a C-6, ck the pan pattern to find out. All in all it sounds like a doable swap then?
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77&79 F250 Rich & Penny
77 351M auto, a/c, add a leaf 33x12.50's
78 (79 headlights) 460 4 spd, 4", a/c and 35's
79 351M 4spd 6" Skyjacker Edelbrock-Holley-Hedman 35's
99 Ranger 4x4, 98 Expedition 4x4, 73 Bronco Hillbilly-Bug
71 Bronco 302 35" Boggers 5.58 gears spool/locker
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Old 03-16-2012, 06:38 AM
 
 
 
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