351W in my 94 AODE Vert

[zZsKyZz]

I've tried the search button, but can't find anything to my exact questions so I'll ask you guys.
I can get a 351W from oil pan to air filter for $100 (if that) from my god-father. He's had it just sitting in his shop for over a year and said I could have it. My questions are:

1. What must I do with the ECU? Do I completely remove it or what? I have an AODE so I'm guessing the computer does something with telling the transmission when to shift and such. Do I take part of the computer out and hook the rest up to an MSD [Mallery, Accel, etc...] box to tell it when to shift and for a rev limiter?

2. Will it fit under my 96 Cobra Hood? I just got this hood and my entire car painted about 3 days ago. I do not want to switch anything, I'm hoping I won't have clearance issues. Is there a way to raise the hood if I do have issues?

3. How much extra HP am I looking at compaired to my stock 302?

4. What else will I need for the swap?

5. How's my MPG looking with a 351?

6. Is it really worth it?

Thanks...

 

[95strokerPSU]

For $100 you might as well buy it. Even if you can't use it, you'll be able to sell it for more. I don't know much about the 351 swap, but as far as clearing your hood, you can get motor mounts that will drop it down, or an aftermarket K member would do the same.

 

[BlackVert]

for $100, i'd take it too

as far as the computer goes, there are parameters for all that stuff so you should be able to use the stock computer with it.

sorry i don't know much about the rest of it, but a search should return lots of hits because there has been alot of discussion about it on this and other forums.

 

[nmcgrawj]

1. What must I do with the ECU? Do I completely remove it or what? I have an AODE so I'm guessing the computer does something with telling the transmission when to shift and such. Do I take part of the computer out and hook the rest up to an MSD [Mallery, Accel, etc...] box to tell it when to shift and for a rev limiter?

Unless u're changing the tranny, that eec will work fine. Probably get a tune like normal.


2. Will it fit under my 96 Cobra Hood? I just got this hood and my entire car painted about 3 days ago. I do not want to switch anything, I'm hoping I won't have clearance issues. Is there a way to raise the hood if I do have issues?

Im not sure with this one, i know it has that hump in the middle. Its gonna come down to what intake u use and what motor mount/k-member setup u use. Best bet is to try to find someone with that hood that has tried it.

3. How much extra HP am I looking at compaired to my stock 302?

Depends on that heads/cam/intake used. The 351s came with 302 type parts on it....that gives 302 power with better torque than a 302.

4. What else will I need for the swap?

This should have been found in the searches
5. How's my MPG looking with a 351?

Again, depends on the setup u run. I dont imagine it being THAT much worse, although it is bigger/heavier than a 302. A heavier rotating mass so that will take a hit to it...but i doubt it will be a night and day difference. Your foot is the real test.

6. Is it really worth it?

When you can stroke it up to a 427 and have more HP the block is capable of handling, hell yea its worth it. Just depends on the direction u want to go with the car.
Thanks...

 

[1slow95]

1. Is the engine carb or EFI? With EFI, you can use your ECU just the way it is. If you want to use AODE and carb, well that might get a little tricky...

2. Depends on the intake. It can be made to fit by getting drop mounts, but then you might run into ground clearance problems if you have a 7qt oil pan and/or LT headers.

3. Depends on the HCI setup...

4. Search

5. Depends on your setup and driving style. I can get around 12 or so mostly highway with my setup. 20+ is possible with the right setup and gears.

6. Depends what you want from it. For a mild N/A setup, I would say no, depending on costs of course. For $100, I'd say it's worth it.

 

[Leezure]

Such menacing thoughts... swap or not to swap... just how fast do you want to spend?

Low 5.0 can help you if you're running EFI. If it's carbs your looking for then let me be your guide. With a carb you'll have to ditch the AODE and go with an AOD (no computer controls). The carbed motor will not clear a stock hood although it may clear a Cobra R hood with the right intake.

Dropped motor mounts are definitely out if you are planning on running long tube headers or a 7 quart oil pan. My clearances can be measured in millimeters.

Is it worth it? That depends on how much time you have to devote to a project like this and once again, how fast do you want to spend?

 

[sage2k]

i dont think its worth the effort unless you upgrade it big time

 

[zZsKyZz]

So... From what I'm reading is that if I keep it fuel injected I just have to put my upper/lower intake on and the fuel rails/injectors and all the sensors and such? Am I right here or what?

 

[1slow95]

So... From what I'm reading is that if I keep it fuel injected I just have to put my upper/lower intake on and the fuel rails/injectors and all the sensors and such? Am I right here or what?

You need a 351W lower intake, but you can reuse your upper. Generally, you can reuse your rails, but you do need to extend the fuel lines between them. All the injectors and sensors are the same.

 

[BlackVert]

So... From what I'm reading is that if I keep it fuel injected I just have to put my upper/lower intake on and the fuel rails/injectors and all the sensors and such? Am I right here or what?

i'm surprised that the lower would fit ...

 

[nmcgrawj]

i dont think its worth the effort unless you upgrade it big time

If u dont upgrade it wont be a huge pickup but u gotta remember the much higher potential u're giving yourself. Its kind of like buying a blower and only running 3-4 psi at first...hardly a difference but u've got a ton of potential for the future. Ok, it aint THAT easy but u get my point

i'm surprised that the lower would fit ...

it doesnt...they do have spacers u can use but at that cost, u're MUCH better off buying the right intake.

 

[zZsKyZz]

So, if i do this i'm thinking i'm gunna get a professional products intake and have it ported because i know people that will help me in that area for a cheap price, then maybe a steeda 19 camshaft and a zex 100 shot?

Any suggestions?

 

[nmcgrawj]

So, if i do this i'm thinking i'm gunna get a professional products intake and have it ported because i know people that will help me in that area for a cheap price, then maybe a steeda 19 camshaft and a zex 100 shot?

Any suggestions?

Does PP have a 351 lower? And im not a cam guru but remember that with all those extra cubic inches, the cam will act much smaller than a 302. So u could get away with more cam than the steeda 19 yet have it act like the steeda 19 does in a 302.

 

[zZsKyZz]

Does PP have a 351 lower? And im not a cam guru but remember that with all those extra cubic inches, the cam will act much smaller than a 302. So u could get away with more cam than the steeda 19 yet have it act like the steeda 19 does in a 302.

Okay then, on that note... What would you guys run on a small budget?

 

[1slow95]

Does PP have a 351 lower? And im not a cam guru but remember that with all those extra cubic inches, the cam will act much smaller than a 302. So u could get away with more cam than the steeda 19 yet have it act like the steeda 19 does in a 302.

Isn't the PP intake an Edelbrock knockoff? If so, could you use and Edelbrock lower with the PP upper???

zZsKyZz, If you're gonna be changing cams you should find out if the 351 your looking at is a roller block or not. If it's a non-roller block you need $425 retro fit lifters to run a hyd roller cam.

What's the current specs of this 351 your interested in? H/C/I?

 

[v6v8swap]

Mike has a good point here. If that 351 is old enough to be carbed, then it most likely does not have a roller cam originally. This can be fixed as he mentioned, but it's pricey. And, Nate is right about how the cam will "look" smaller to a bigger engine than a 302. The guys with stroked 302 based engines will tell you that also. Good luck and let us know how it goes, I've got an "extra" 351 sitting in the garage right now and it's got me thinking......