O.K. Who has a 351 Mod?

My dad can get me a 351 Mod, but we need to know what exactly I'd need to do to the ol' Mav to make it fit... Who's got one and can tell me what they did? Thanks a lot, guys!

 

Putting a 351M (Modified) in a Maverick is going to be about the same as putting in a 351C (Cleveland). Do a search for 351 Cleveland.

If I my throw my opinion in here, the the 351M is a dog. Building one of these for a Maverick is almost a waste of time and money. You will be much, much better off with a 302 stroker ( by far and away the easiest swap for a Maverick) or a 351W (Windsor - stroked up to a 427 if you want). If I was not going to use a 302 or 351W, I'd use a 351C. I would never use a 351M. Ever.

Do a search for 351w Swap.

 

Have to agree with hawko the modified was junk.....

Stoke out a 302 and have fun more than enough for our cars unless you are going to the track to run brackets with the car....

 

351m is best used on the end of a long chain. most people call it an anchor.

 

Besides being a dog, (and they can be made to run with enough money but why spend that much on one of them when probably half that money could make a 302 run better than that), they (351M's) have a C-6 (or a big) bellhousing bolt pattern. There is not any room for a C-6 without tunnel mods, well maybe but it is tight. The whole process just gets harder trying to go this route. IMO, not worth it.

 

Yeah, I understand that the mod is a waste, but I'd be getting it for free... But good to know that It'd take a lot of mod to the car first, helps make my decision a WHOLE lot easier.... Thanks again, guys!

 

i think someone else had posted on here at one time that there too wide to fit between the shock towers, but i wouldnt know. from what ive read they sound like a waste of time but either way good luck

 

Yep...the 351M and 400 are the same width as a 460. They aren't quite as tall and slightly shorter lengthwise, only about 75 lbs lighter and they never made more than 150 HP. In fact, a 351M and 400 use the same deck height within .030" as a 460. It'll fit in a Maverick but you'll have to lose the shock towers completely, build your own headers, use a C6 transmission (which eats up about 65 HP), have a driveshaft made, fab motor mounts....

It's free for a reason. Nobody else would pay anything for it. Usually when someone asks me if I want a 351M or 400 (same engine, but the 400 is obviously 51 cubic inches bigger..it's actually 402") my response is "yeah I'll take $50 for it"...meaning youd have to PAY me $50 to take the stupid thing! 400's have potential. Luckily the 351M and 400 are the same block...you just pick up a 400 crank and pistons and it goes right in. Then pick up a pair of CHI heads and their matching intake manifold and 500 HP would be an easy task. But building a 408" windsor that screws onto the same mounts as a 302 and can be made to fit EASIER, and make the same power (if not more) makes more sense.

But as I mentioned, they are the exact same width as a 460, use the same transmission...so wouldn't it make more sense to put a 460 in there if you have to do all that work to make a 400 fit?

Now I'm not saying that it cant' be done...but just do the homework before you spend a bunch of time cutting it up to make a dump truck engine fit.

 

My grandpa has a '78 Bronco XLT with a 351M. Junk, Junk, Junk... No way I would put one in a Maverick. They do sound cool with straight pipes and the choke half out to make it lope, though.

 

The Bronco guys love building the 400's. They build them to make great torque for hill and rock climbing - ala a truck engine for pulling not running at speed. But, don't put one in a Maverick.

 

I got a 400,,,real dyno at 390+ horse. They are getting better known, with more parts out an coming. Nice engines if you get over the old ways of the stock engines!

I would not put this in a Maverick! Currently have in a 78 4x4 short bed. Smokes tire more then most cars!. Only one year will take the smaller tranny bolt pattern, if you have that (73, you'll see dual lines for both trannys, small is drilled out) Sell it for a GREAT buck an build you a 302 or a 351w.

As all the above said,,, TOO much work an most is hand fab! Even if I hit the Mega millions,,, I wouldn't do it! Good Luck an keep us posted!

 

I have just finished building a 400 for my son, who is in Iraq. Put it in a 78 two wheel drive. Has Wiend intake, Holley, Comp Hyd. cam and roller rockers etc. Because of the deck hieght being so extreme, he found a place in Minn. who makes special pistons for KB that uses stock rods and brings them to zero deck. Using stock 2 barrel cleveland heads and coated Hedman headers. Fired it up a week ago and it has great throttle response and matching torque too. Have a few issues to resolve with small details(always are time consuming) but will road test it soon. Got a feeling that when he drives it back to Ft. Carson in Jan., he will need a fuel truck to follow him with gallons of premium gas. Am anxious to see how it compares to a windsor, not to much more exspense to build it compared to the W. Would never try to put one in a Mav though, lot's of weight with the c6.

 

http://www.tmeyerinc.com/

Here is where your son, God Bless an Thank You (Family) and Son for the sacrifice,, got the 400 parts. Tim is a great guy to deal with an can make some power on the 400! I bought his project 400. Was going to rebuild my similar 400, just worked out better for his! What all did you get from Tim?

Your son keeps his foot out of it and you'll be surprised on gas mileage

 

The problem with the 351m/400 is the relatively small cubes for the relatively massive weight.
If you keep it around 400 to 430 cubes, you can get the same cid/power from a stroked 351w, and it will weigh a great deal less. Remember weight lost is horsepower gained in effect.
If you want more cubes that that, you can go 460 for the same money (or less because I don't know of any stroker stuff for Modified), and have the extra power with the same tranny and weight.
The 400 is an engine with potential, but there are too many compromises to make it worthwhile.
The 351m is just a joke. Massive weight gain for same cubes as Windsor or Cleveland.
I have heard it called "hermaphrodite" in the old days.

 

Well.... if you know his son like I do... he'll run out of gas before he gets out of town... lol Atleast til he gets the "new" wore off of it.

He has bought some quality parts for the ole 400 and should run pretty good Im thinking.

As far as putting it in a maverick... its not the best bet honestly.

Had one in a 80's F-150 4x4 and it ran pretty good for what it was.

Decent motors, just not what most people would want for a maverick.