Another windsor thread (sorry)

[seijirou]

Alright I've been doing some searching around on the forums and I've dug up most of the information that I think I'll need, but I wanted to get some for sure clarification on some stuff.

The scenario:
I have an 86 foxbody 5.0 with a 5 speed. I recently purchased an 88 full sized Bronco for $200. It has a 351 and a c6.
I would like to do an engine swap between the two. I know that I'll need to get a proper flywheel for the 351 to mate with my T5, and vice-versa to mate the 5.0 to the c6 in the Bronco.

So on to the questions. The bronco's fuel injection is SD, and I'm pretty sure it runs 19 pounders but I'm not 100% sure. Does anybody know what these came with stock? If it is 19's is there any reason I couldn't use the Bronco's computer with the 5.0? I do have a SD mustang computer somewhere. However that raises another question... Is the bronco batch fire injection or sequential like the mustangs are? If it is batch fire, could you plug up a sequential SD mustang computer... would it require jumping pins?

For putting the 351 in the fox... It is currently MAF using the ford piggyback harness. I'm pretty sure this should just be plug and play with the 351 assuming the injector size is the same.

I've also caught wind that my 351 is not a roller motor. If this is true.. is it really a big deal? I plan on putting a pair of turbos on the motor but I don't forsee boost ever exceeding 11psi.
If I should convert the 351 over to roller, what exactly do I need to do. I've read some on the subject but for some reason the explinations I've read of what is necessary didn't click with me. If someone has some time to elaborate I would greatly appreciate it.

And my final question is about getting the 351 to fit under a stock hood. I have a little bit of cushion with the hood as it has a scoop ontop and I don't have a problem cutting holes out of the hood underneath that scoop. I know I can get solid drop motor mounts that are supposed to bring the engine down 3/4 of an inch. How much taller does the upper intake sit compared to the 302? _For the time being_ i'm going to use the stock truck 351w lower with the mustang 302 upper. I know it's a piss-poor match, but for the first stage I want to focus on things working and fitting properly, then I can go through and have her performing properly.

Thanks guys for reading the novel if you got this far

 

[vristang]

I have re-written the post I usually throw for the 351w swap questions.
Here is a link...
http://www.freewebs.com/vristang/fox351wswapfaq.htm

Let me know what you think. I am eager for feedback.

An 88 351w will not be a roller, that started in 94. The above link has a description of the changes needed. If you have specific questions let me know and I will address them as best I can.

I also mention some other methods of clearing the stock hood. I cleared mine by shortening the upper intake manifold.

I think the truck lower has a different runner pattern than the 302, but I am not sure on that. The Bronco 351w lower I have is much different than any 302 intake I have seen.

Also, double check the firing orders; off the top of my head I can't recall which years where what.

Good Luck with the swap, it is worth every bit of effort.

jason

 

[Bill88Stang]

the trucsk speed density system is also different , its injectors are fired in groups. as is one bank or one side of the motor all 4 will fire then the other side all 4 will fire instead of the mustangs sequential firing on the injectors.

 

[seijirou]

the trucsk speed density system is also different , its injectors are fired in groups. as is one bank or one side of the motor all 4 will fire then the other side all 4 will fire instead of the mustangs sequential firing on the injectors.

Yeah, that's the batchfire I was talking about. What I'm wondering is if this means the harness wiring is different, or if it's just the computer's programming that's different. With 2 bank batchfire you only really need 3 wires to run the injectors. But that doesn't mean Ford didn't go ahead and use 9 like the Sefi anyway.
Ofcourse I can always just go look, I just thought someone might know offhand.
I have read a couple of threads where people say the Mustang SD wouldn't work with a 351. However nobody's ever said why. The truck is SD already. Sequential vs. batchfire really wouldn't make much of a difference. I honestly don't see why mustang SD wouldn't work, unless ofcourse the trucks use 24 pounders

Vristang, great writup. I will pm you when I get a little bit more time... if I ever get a little bit more time

 

[vristang]

I think the main reason the SD computer can't handle the 351w is the extra cubes, combined with the SD computers inability to adapt to engine mods. Most poeple with a h/c/i on a 302 SD car will have drivability issues. Add in a change in displacement, and it would just get worse.
I wouldn't be much help with the difference in wiring harness, but I am curious to know when you figure it out.

jason

 

[seijirou]

I'll know about the wiring differences if there are any first off. Getting the 302 running correctly in the bronco is my first task. I would like to use the sequential instead of batch if it isn't too much trouble. Also given the rigidity of ford's SD systems I imagine I'd also catch hell trying to make the 351 ecc work correctly on a 302.