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302 swap questions


chayse brooks

Well-Known Member
Joined
Mar 2, 2015
Messages
65
Sorry for another thread on a 302 swap but I have a few questions. The 2.8 in my 85 bronco 2 may have finally given up on life and I don't want to wast any time replacing a boat anchor. I have a guy willing to get me a 302 and c4 tranny for 600 which is about all I can afford at the time. What else would I need and will it bolt up to my t case ? Oh and one last thing I'm going from manual to auto so will there be any complication there? Thank you for the tips and please feel free to explain what you had to do if you have done this swap. Thank you
 
Sorry for another thread on a 302 swap but I have a few questions. The 2.8 in my 85 bronco 2 may have finally given up on life and I don't want to wast any time replacing a boat anchor. I have a guy willing to get me a 302 and c4 tranny for 600 which is about all I can afford at the time. What else would I need and will it bolt up to my t case ? Oh and one last thing I'm going from manual to auto so will there be any complication there? Thank you for the tips and please feel free to explain what you had to do if you have done this swap. Thank you

If you find a 4x4 C5 out of a RBV you can swap the back end of it onto your C4. Otherwise out of the box no, they will not just bolt together. Will need a shifter and preferably a different set of pedals.

For the engine, it really depends on what it is for an engine. Figure exhaust at a minimum. Going to need to help with the cooling system for sure. Wiring and fuel system are up in the air depending on what the engine is.
 
Okay so the 302 is out of a 1978 granada along with the c4. So what your saying is that I would need to make a c4/c5 sort of Frankenstein transmition. Also for pedals I would swap to either an ranger or bronco set the same generation as mine and for electrical and fuel I would want to keep it as stock as possible with the exception of running a fuel cell and pump for a 302
 
Yeah, you would need to make it a frankintranny. That is more or less what mine is.

Or find a different one, either a 4wd AOD (automatic overdrive) out of a fullsize or a M5OD (5speed manual) out of a 97-08 4.2 F-150 (and all the clutch stuff and separator plate) Would also need a fullsize t-case.

Driveshafts will be required no matter what you do.

Pedals are out of similar year, not a biggy.

Fuel add an electric fuel pump, they don't need much. I have a $50 12S (I think) Mr Gasket pump and it works great. A little wiring for an ignition and you should be good to go... with all the 130 ponies that engine will put out.

Swaps are very rewarding... but are not cheap or quick to do. :dunno:
 
Your gonna need a dual sump oil pan, oil filter relocation kit, motor mounts and then all the little extra odds and ends that follow doing these swaps. Its not as easy as just pulling the stock motor out and installing the 302. You could make the C-4 work, but your gonna have to either get a adapter for the stock Transfer case or try and find a Dana 20 out of a early Bronco or F-100 (if you go with the 20 make sure it is the 4hi/4lo version. They also came with just 2wd hi and 4wd hi). For the 20 you would also need the tail adapter for the C-4. You also gonna have to make/find a cross member for the T-case (I used a early Bronco cross member that I modified to work).

As far as the pedals go, just use what you have. My Ranger was a 4spd and I just wired the clutch pedal down on the floor (its out of the way and I never notice it).

I use the in tank fuel pump (my tank is out of a 87/88 Ranger, so its the low pressure electric) and I run a pressure regulator (Mr. Gasket, adjustable). I got all new sending units and the stock gauges all work correctly.

I used a B&M mega Truck shifter in mine.

I had custom drive shafts made Dana 20 on one end and Dana35/8.8 on the respected other, that are correct lengths.

Like 85 said, a 302 swap is not the place to try and skrimp by. Do them right and it will work, cut corners and your gonna have a giant pile of no good parts.
 
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I don't want to cut any corners and just throw in a Moter and then have to re do it all over again I want something reliable and done right that's why I have these questions I want to know the easiest and best way to go about it so that brings me to another question should or even would a c4/c5 be best or find another tranny? And yes I do know I'm going to need the conversion parts as a oil sump and what not but I am wanting to start getting the big pieces like engin and transmition and then start doing the small things
 
As for the t case is the Dana 20 my only option unless I use a different transmition. And for the cross member I could make one I have all the tools to weld it up and cut it so it shouldn't be to hard
 
If you want to see what doing it wrong looks like check out my build. worthless brackets, hoopty left block set up, horrid drive shaft angles, and one serious cooling pita.
I bought mine like that for cheap and I'm fighting it all I have a brand new aod with the adapter for the bw 1350 Manuel shift the worst part about this trans set up is the TV cable would not recommend it its a massive pain. Check out James Duff they have some v8 swap stuff your best plan is to make a list of all the issues your gonna face like exhaust. PS, etc and just gather parts

Edit: parts places that have swap specific: James Duff ,advance adapters and, summit racing I'm sure there's more but you can start there
 
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Okay I'll check it out and thanks for the places to look for parts that's really helpful
 
No the Dana 20 is not your only option. They used to make adapters to use the stock cases (dont know if they still do or not) there are many other T-cases out there that others have used. I went with the 20 mainly because I run a C-6 and it was narrow enough to clear the radius arms for the front driveshaft. I tried the 1356 that came out of the F-150 that I got the tranny out of, but I couldn't put a front driveshaft in (it would hit the radius arms) I also went with the D20 because if I can ever afford the Atlas II it would be bolt in.
I did a lot of planning when I first got the idea of a V-8 swap in mine (about a year) and then another year of just getting parts together. I did mine back in 2000 and even then I didnt follow the regular swaps (mainly the C-6/Dana 20 combo. There is a lot more info/build sheets on the swap nowdays (i used mainly the MRC swap book when I did mine).

Best thing is if your not sure, do exactly like your doing and look at others builds and ask questions.
 
:agree: and I wish I would have done more reading before I bought my truck. Right now I'm just singling out issues and reading about them and doing the best I can to solve them and what looks right also my builds 87 single cab sas in off-road rangers under construction I'd post the link but my phone blows
 
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Unless that 78 engine has been modified for power, I wouldn't use it. I think they had 140hp at best and were boat anchors too. A roller block 5.0 is the way to go, 85+ in the years.
 

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