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Engine Identification on my new project

trailerjack

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Sep 5, 2013
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After a long time seeing this bronco on a body cart, the owner decided to sell and I was given the chance to buy it.

This is a complete project but not sure what engine this is. I only really know the 302 and was told this may have Come out of a mustang but not sure. Any advice on how to identify it?

I’m debating whether keeping it in or putting in a 302 which I’m more comfortable tackling because the wiring and all is pretty straightforward.

Thanks in advance!
 

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Timmy390

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Looks like early 90's mustang front dress. Valve covers are what came on my 90 gt. All HO's came with E7 heads as I recall.

Pull the intake....look for roller lifters. Check the firing order...

Others will chime in I'm sure.

Tim
 

jamesroney

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Based on the single picture, it is exactly what Tim says. 87-93 Mustang 5.0 SEFI. You can confirm by reading the block casting number located near the starter. (not above the pan rail like the old flat tappet blocks.)

It is a 50 oz-in imbalance, roller cam High output engine. It will have a dipstick provision on the driver's pan rail, and EGR ports in the back of the heads. It will not have a provision for the clutch linkage pivot. There was no finer foundation for a Bronco 302 build back in 1995. You will want to ditch the front dress, and carburate it.

All of the 87-93 Mustang 5.0's are pretty much the same, except the 1989 came with factory forged pistons.

You can ditch the front dress, and run a carburetor, or you can install the EEC-4 multipoint fuel injection.

I still like it better than the 96-97 Explorer 5.0. (which is the "other" good one...)
 

B RON CO

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Hi, make sure you have a Bronco oil pan and pickup! Good luck
 
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trailerjack

trailerjack

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Grabbed some more pics on my way to work this am
 

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Timmy390

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Those large bolts in the back of the head are plugging the EGR ports.....I call Stang......

Tim
 

Broncobowsher

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The EGR port is in the intake, right next tot he 4 carburtor holes. The bolts in the back are plugging the air injection ("Thermacotor" in Ford speak). 2 seperate things that involve exhaust. Thermactor puts air into the exhaust to complete the exhaust burn that didn't happen in the combustion chamber. EGR puts a little exhaust into the intake to dilute the oxygen so the burn is a little cooler and that helps keep the NOx emissions (Nitrogen fusing with oxygen in high heat) lower.

That intake is the typical '85 mustang GT intake. Plugging that EGR port is the biggest issue. It's a good intake for a stock engine. But intakes can be swapped as well. Doesn't mean the engine was born with it. The valve covers are EFI covers, no PCV (it is in the back of the intake on the 5.0 EFI manifolds instead of the other valve cover) and the tall filler neck that has the breather hole for an EFI intake. So one of those things (intake or valve covers) is not original to that engine. Probably intake so they could go to an old school carburator.

Transmission looks to be a much older that the engine C4. I see a servo cover that would not be there if it were an AOD that the engine would have come with. Since there is also a J-shift, it is likely an original Bronco C4

That alternator is a 2G, and needs to be thrown away. That big electrical plug on the top of it, likes to catch fire.
 

toddz69

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Definitely a Mustang engine - and based on the valve covers, I'd say 86-93 (although the oil fill cap is 87-93). The intake appears to be the 83-85 4 bbl. manifold.

Todd Z.
 

Jdgephar

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Whats the deal with that power streering contraption?

Sent from my SM-G981U using Tapatalk
 

toddz69

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Whats the deal with that power streering contraption?

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I see an EB power steering box and a Mustang C-II plastic pump with some lines (return disconnected).

Todd Z.
 
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trailerjack

trailerjack

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Thanks for all the help! If I keep this one, I will use this motor with carb, so I will be on the lookout for a good build on here that can lead my decisions.
 

Broncobowsher

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FYI, a carb will not work directly on that manifold. Need an EGR plate (or a delete plate) to plug the EGR passage.
You will also need to address the PCV system. As it stands now there is no provision for the PCV valve
 

toddz69

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What is the pitman arm attached to?

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Dang - totally missed that! That is weird - looks like someone adapted a much longer sector shaft to the box somehow.

Todd Z.
 
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trailerjack

trailerjack

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Dang - totally missed that! That is weird - looks like someone adapted a much longer sector shaft to the box somehow.

Todd Z.
I will take some better pictures....This was last on the road in 1998....so no doubt it was probably some type of "performance mod" !
 
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trailerjack

trailerjack

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Here are some steering box pictures.
 

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DirtDonk

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Wowzers! That’s an unusual one for sure.
Factory bronco steering box it looks like, with an extended sector shaft with lower bearing support.
Very very interesting…
 

Broncobowsher

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Never seen anything like that.

Makes me wonder. Twisted stock sector shaft (it happens), couldn't find the correct one. But what is that shaft? Would an 2WD F150 steering shaft fir an early bronco box?
It's a different way of doing a drop pitman arm.
 

Viperwolf1

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I've seen a few gm vans from the late 70s with a long sector shaft in a Saginaw box. I don't think the ford sector shaft will fit.

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