1969 Mustang 4.6?

el6nino9 · Nov 1, 2006

Im considering putting a 4.6 2v drivetrain out of a 91 lincoln towncar i have into a 1969 mustang fastback im putting together does anyone have any knowledge or pics of one done or what was done to make it bolt into it the car last had a 351W/FMX setup in it

D.Hearne · Nov 1, 2006

You'll have to notch the shock towers to fit it. The SOHC 4.6 is wider than a 460.

69gmachine · Nov 1, 2006

I realize it's your car and you can do whatever you wish to it, but it's considered poor form to cut up the 69/70 fastbacks as they are pretty much universally recognized as the most handsome of the muscle mustangs of all time. Of course I have no particular bias... although I do own one!

NasaGT · Nov 1, 2006

Do a search on modular swap and you'll turn up alot of good info.

As for your swap, the 91 Lincoln 4.6 is on of the first modular motors on the market and its performance was lacking. You'll want to upgrade to 99+ heads, intake, and accessories to make respectable hp. As cheap as the used mod motors are, I think its more cost effective to go out and buy a complete 99+ used long block then to buy all the new parts individually.

LMan · Nov 1, 2006

D.Hearne said:
You'll have to notch the shock towers to fit it. The SOHC 4.6 is wider than a 460.

I know which one of those two I would choose. It's not even close.

bnickel · Nov 1, 2006

personally, if i was going to go to the trouble of cutting the shock towers i'd be putting in some kind of HUGE engine, boss 429 or a 427 cammer, but that's just me.

amorrow · Nov 1, 2006

Definately not worth it for a non-Mustang SOHC 2V. I'm not a big fan of fitting modular engines in classic Mustangs, but a Cobra DOHC 4.6 would look killer in a '69-70 Sportsroof, and would give it that Boss 429 look with the similar-looking valve covers. If I were doing this, I wouldn't completely remove the shock towers, but rather modify them similar to how the Boss 9's towers were modded.

el6nino9 · Nov 1, 2006

the reason for doin this is its a present for my girlfriend this is her dream car and all she wants it to do is look "pretty" and for money reasons i already have the lincoln towncar sittin around that i had already planned on using the drivetrain as a donor car for whatever came around

BB1966 · Nov 1, 2006

To really do it right its not worth the time or $$ to put a single cam in. Sell the TC and buy a totaled 96-98 Cobra and use the whole drive train. Trimming the shock towers will get it in but in my .02 it looks like hell and still is a tight fit.

amorrow · Nov 1, 2006

el6nino9 said:
the reason for doin this is its a present for my girlfriend this is her dream car and all she wants it to do is look "pretty" and for money reasons i already have the lincoln towncar sittin around that i had already planned on using the drivetrain as a donor car for whatever came around

Well, in that case I'd sell your Towncar drivetrain and pick up any good 289/302, strip it, repaint it, maybe add a simple Edelbrock Performer package and some nice valve covers and air cleaner, and you're good to go. You can do all this much cheaper than it's going to cost you to make the SOHC 4.6 work, and the carbureted 289/302 route will be virtually hassle-free. I think a nice, simple spiffed-up 289/302 will look better than a Towncar 4.6 anyway.

Here's an example of a 289/302 with a nice-looking, yet inexpensive, Edelbrock Performer package and Cobra dress-up kit. I built this for my dad's '65 Coupe, and will be installing this in my Fastback until my dad's Coupe is ready for it or I build my new engine, whatever comes first.

D.Hearne · Nov 1, 2006

LMan said:
I know which one of those two I would choose. It's not even close.

Me too Even though I'm not a real big fan of the 385's.

el6nino9 · Nov 1, 2006

im not lookin for how much this car is gonna be worth its not for sale nor will it ever be she just wants to be able to drive the car and i already own the lincoln towncar so this way i would not have to buy a drivetrain and i would install it myself i dont want to waste the money in building up a motor all the car needs to do is be dependable and look "pretty" all i was wanting to know is if anyone has done this before ive seen them installed in fox bodies but never in anything older if it were my own car i would never put this motor in it for my own likings but shes not worried about whats under the hood

rebel65 · Nov 1, 2006

they arne't saying it will be worth more, they are saying buying a 289/302 will COST less, if she isn't worried whats under the good go buy a wrecked fox's 5.0... it will actually fit. they are saying the money you are going to drop puttin in that motor you have already will outweight the cost it would be to just get a 5.0 and slap it in.

el6nino9 · Nov 1, 2006

it will cost me alot more to track down another motor and tranny and all the parts to put it in when I ALREADY OWN THE TOWNCAR i can get in and drive this car do donuts burnouts whatever IT WILL NOT COST (except for my time and maybe some nuts and bolts and gas and wire for the welder) to put a motor i already have in the car im not lookin for who thinks i should put what motor they would put in it in i just was curious if anyone knew what all it takes to put it in i have other motors i could put in it but im lookin for something to do out of the ordinary with it

TheSubHumans · Nov 1, 2006

I can't believe that you guys can't just give him a straight up answer to his question instead of trying to change his plans!

Anyways, if you wanna put a mod motor in your car your either going to have to notch the shock towers or remove them. Heres some links to some mustangs with mod motors that are either finished or are a work in progress...

http://www.cardomain.com/ride/2316745/1

http://forums.stangnet.com/showthread.php?t=536634

Heres a '65 with a Kenne Bell charged 2V (owned by Dave a Devious Restorations inc.)
http://forums.vintage-mustang.com/showtopic.php?tid/1423441/post/1424982/hl/dohc/#1424982

Heres more of Mustang in Black
http://www.dvsrestorations.com/mib.html

i'm sure theres more i just can't remember where.

I'm not sure but the transmission tunnel may need to be enlarged to fit the transmission too. I think it's cool that you plan to this swap because it not so common, and if you have the motor and tranny already i don't see how it could cost more to swap it in than a windsor based engine if you do all the work yourself

Rusty67 · Nov 1, 2006

What happened to the 351/fmx that was in the car ?

amorrow · Nov 2, 2006

TheSubHumans said:
I can't believe that you guys can't just give him a straight up answer to his question instead of trying to change his plans!

I'm just saying, a 4.6 swap is not for someone on a tight budget. Yes, there have been some really nice projects using modular engines, but I guarantee that you won't find a single person, who has completed such a project, claim it had a relatively (to, say, a carbureted SMF setup) low cost, even if a free donor engine was provided. Also, I've heard from others' experiences (haven't attempted to put one in myself, that's why I haven't given exact instruction) there's hassle elsewhere than simply wrt fitment. I bet the price just to get one to work in the car will outweigh the cost of finding a run-of-the-mill 302, rebuilding what is necessary, and doing exactly what I mentioned above.

As we all know, it's very easy to exceed cost expectations when working on these cars, especially if one's attempting to something rather unusual such as adapt a TC 4.6 into a '69. I just don't want him to start and project, get in way over his head, and then be stuck. I'm not purposely withholding information, I'm just offering whatever educated advice I can.

BTW, I take it the Towncar will be rendered useless without the drivetrain. If the car is decent and running, why don't you simply sell the complete car, and use that money (should be more than enough) to buy a nice small-block and matching trans?

LMan · Nov 2, 2006

TheSubHumans said:
Iyour either going to have to notch the shock towers or remove them.

but the transmission tunnel may need to be enlarged to fit the transmission too.

Yeah, that's a LOT less work than finding a 302 (which are like lint) and dropping it in, hassle-free

Because some boutique shops with lots of time, $$$ and expertise have done it doesn't mean the average hobbyist should start ripping his shock towers out.

But whaddevah. You are right, he only asked for info on doing it. Call Dave Stribling at www.dvsrestorations.com and be done with it, then. Dave is a super guy and will provide all the info you need. He's the guy who built Mustang In Black.

el6nino9 · Nov 2, 2006

thanks "TheSubHumans" by the way its just a towncar ive junked running and drivin ones just another car but with a good drivetrain the bodys clear coat is pulled up and the interior is trashed just a good donor car and as for the 351 it was gone before i got the car i have the fmx it came with but theres no torque converter and no clue as to what the condition of it is my father claims that the fmx is "indestructable" as long as the fluid is still red it should be fine but ive not taken it out of the car yet or looked at it really

D.Hearne · Nov 2, 2006

amorrow said:
I'm just saying, a 4.6 swap is not for someone on a tight budget. Yes, there have been some really nice projects using modular engines, but I guarantee that you won't find a single person, who has completed such a project, claim it had a relatively (to, say, a carbureted SMF setup) low cost, even if a free donor engine was provided. Also, I've heard from others' experiences (haven't attempted to put one in myself, that's why I haven't given exact instruction) there's hassle elsewhere than simply wrt fitment. I bet the price just to get one to work in the car will outweigh the cost of finding a run-of-the-mill 302, rebuilding what is necessary, and doing exactly what I mentioned above.

As we all know, it's very easy to exceed cost expectations when working on these cars, especially if one's attempting to something rather unusual such as adapt a TC 4.6 into a '69. I just don't want him to start and project, get in way over his head, and then be stuck. I'm not purposely withholding information, I'm just offering whatever educated advice I can.

BTW, I take it the Towncar will be rendered useless without the drivetrain. If the car is decent and running, why don't you simply sell the complete car, and use that money (should be more than enough) to buy a nice small-block and matching trans?

You've made a far stronger case than Subhuman did. But some people need to have the truth beaten into them to help them realize what they want will cost them 5 times what doing the sane thing will. Good running 351's and 302's are a dime a dozen and will bolt right into place, he could have the car running in a day or two, where doing a mod motor swap will take weeks, more than likely. Good running late 80's to early 90's Lincoln Mark VII's can be had for less than a grand and are great donor cars. Ditto for trucks and vans with 302's and 351's. There are literally thousands of good running donors with what he needs for far less than he'll spend in time and money in a mod swap, even taking into account the fact that he's already got a donor for the mod motor.

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