What do you have goin on with your 351M/400

[UTfball68]

Alright now...gonna try to liven up this section a little bit. I'm just wondering what you guys have done or plan to do to your 351M/400. I realize most folks regard these engines as boat anchors and swap to a 460, but I love them with a passion. I'm also looking for ideas for the engine build in my Bronco.

Here are the specs on Red's 400:

Holley 4150 650 cfm electric choke vac secondaries
Eddy Performer Intake
.030 overbore and hypertuetic step dish pistons
XE262 Comp Cam
Sanderson FC3 Headers
True Duals...2.25" pipe through 12" Cherry Bombs

Dyno numbers= 347hp/442tq

Future plans call for a Barnett 496 stroker, CHI 3v heads, Holley 4150 850cfm, offenhauser intake...that would be 550+hp/600+tq on premium fuel


Here are the probable specs on the Bronco's 351M build to be done by Easter:

Holley 4150 650cfm
Eddy Performer intake
.040 overbore and TMI pistons
XE256 Comp Cam
Hooker Headers
TMI 400 crank
True Duals...2.5" pipe through 8" Cherry Bombs

Desktop Dyno=342hp/440tq


So please guys, share what you've done or plan to do, and even give me some suggestions.

[Highhorse78]

My 408ci specs...
Originally a 351m

Polished 400 crank
TMI .030 over pistons
Crane cam. Grind# H-266-2
Cloyes timing set
Isky 1.8 roller rockers
Edelbrock Performer intake
Edelbrock offroad AVS 650 carb
Extensive port matching and mild port.
Dynomax headers
Full MSD setup minus the dizzy.
2.5" duals all the way back and out the side with Flowmaster 50 series.

[Salt-Man]

my 351M found its true calling at the smelting plant where it was melted down and turned into a honda

[mbbford]

I keep putting off engine work on my 400, because I don't want to put any more money into the Bronco YET.
So far all I've done is put headers and 2.25" pipes and 12" glass packs...
I have a 600 CFM Holley 4v carb and aluminum edelbroke intake waiting to go on.
I want to put new cam and lifters, valve springs and seats, and a double roller timing set....

But then too, I also want a built 460, so who knows.

[jopes]

currently the build on my 408 is like 6 years old. a few years back I put SEFI on it using all factory ford parts.

Next big things are, I am going to try running it with E85. If it works out well, then I might jump a couple injector sizes up when I build a new mill in a year or so and run it on a diet of 100% E85. No other fuel will be in the engine.

[J&SBroncolvrs]

My 400 has:
Performer manifold
Flowtech headers with dual exhaust
Edelbrock 600cfm carb
Comp 260H cam
Zeroed timing gears

the mains are .30 over, the pistons are aluminum, no idea if the block is bored out (probably) or if they are high compression pistons. Didn't tear it down that far, as that was all good. Has a mountian of power though, no prob keeping up with new trucks.

[mrw]

My 78's 410 (.040) likes lots of fresh oil and amazingly has no rust on the undercarriage! It does have a torque curve like a diesel.http://www.mrwbronco.com/smilie/burnout.gif

[Johnny]

My 408 is holding my EB down, and watching the world go by through the grill... waiting... just waiting..

[TdmayfieldIV]

uhhhh. unknown, lookin at a 400 longblock.

As some of you may know from Fullsizebronco.com my engine is kaput and I am rebuilding it right now

Anyway, it had
High compression pistons
RV cam
Edelbrock performer intake manifold
Holley carb
Accel Supercoil

[redmt79]

My 408 is holding my EB down, and watching the world go by through the grill... waiting... just waiting..

Mine is nervously watching the 460 sitting on the stand in the shop. ?>:<?

[Squid]

Mine is nervously watching the 460 sitting on the stand in the shop. ?>:<?

That's the problem. My 460 is at the engine builder's shop, far away from my M-blocks.
I've got no complaints about them though, the 400 in my '79 SuperCab has done everything it needs to do.
The 351M in my 2wd 78 truck has been very reliable

[Gilligan]

The only 400 build I have going at the moment is an EFI with Oz heads..but I want to stroke it and haven't decided how big, nor has my stimulus check showed up yet..so it sits. That..and MRW thinks he's getting that set of Oz heads offen me too.

[smokeyb97]

79 351M
400 crank
Melling std. oil pump
TMI step dish hyper pistons
O.E.M heads w/Ferrea stainless valves
CompCam 255 DEH
Edelbrock 400 intake
Edelbrock 1406 Carb
Doug Thorley Headers-ceramic coated by Nitroplate
Block-decked, bored and honed .030 over
FlowKooler alum. water pump
K&N air filter and lid
O.E.M distributor
machine work(PSI INC. B'ham,Al.)finished, waiting to be assembled and dyno'd- CAN'T WAIT!

[Gilligan]

'course I can always rehash the 400 I run in my '69 trail rig:

D7T block bored .030"
Aussie heads with Ferrea valves, Crane valve springs and Scorpion roller rockers
Silvolite 12cc dished pistons
race balanced rotating assy
Comp 280H cam degreed up 2 with Rollmaster TC and gears
Reverse oiling mod and cam bearing restrictors
Blueprinted Melling HV pump from Precision
Edelbrock SP2P 4V intake
Holley 950 Commander TBI
Mallory Unilite dizzy
K&N air filter and filter wrap
9" Derale oil cooler
C.A.T. aluminum water pump supporting F250 460 Camper Special fan and clutch assy.

[Mud Rat]

My 400 build is so secret, even I don't know what's in it.

[79fordblake]

Well I dunno when the 400 in my Bronco was last rebuilt but it still runs strong, good oil pressure/ good compression/ no smoke. I put on a 600cfm Holley carb and SP2P Edelbrock intake(good low end).
Everything else is stock.

I plan on later installing a EX256h Comp cam and corresponding valve springs/ lifters/ timing set. Maybe upgrading to Edelbrock Performer Intake but keeping the 600 Holley.

First order of business though is getting the distributer unstuck so I can take it out. Also need to do stuff to my 73 F100 and 79 F150.

[smokeyb97]

351M/408
Dyno #'s
HP:339@4300
Tq:478@2900

[CS79bronco]

>B<
Questions for you young whipper-snappers (400 experts):
I bought a 400 with ~22K miles-reman for Ford +.040-NO build up at tops of cylinders-has lots of carbon build up on valves-run with Edelbrock performer & big Holley carb. (maybe too big?)
I have collected an Edelbrock cam, lifters, & timing set, (need Ed valve springs)
& 600/650 Holley.

Is it going to be worth the $300 or so for TMeyer pistons & rings to run with the above? If so, would honing the cylinders be sufficient with new pistons & rings? Also will Cleveland 2V heads do anything for torque? (have a pr) & will the 400 intake fit Cleveland heads?
Any & all suggestions welcome!!
Thanks, Charles.
?><:?

[redmt79]

Cleveland 2V heads are identical to those on the 400. So no they are not really going to do anything for you, but yes the 400 intake will fit.

The build up on the valves could be from oil leaking past the valve guides.

I don't have any experience with Tim's stuff, so I can't really comment other than raising compression a bit is usually a good thing.

[CS79bronco]

Thanks red,
Doesn't look like many folks read these threads, does it?

[redmt79]

Probably more read them than what you might think, but most must be shy about posting a reply. :o

[CS79bronco]

Yeah, guess you are right. I was hoping to get some good info. I'll have to call TMeyer and see what they say, but like to get some opinions before I spend any money.

[CS79bronco]

Well, looks like this thread has died. Been over a month, no info for me. I'll hang it out over at FSB & see if I get any help.

[DNFXDLI]

TMI 4.25'' stroker crank
KB Pistons
CHI 3V 225cc heads
CHI intake
Comp Cams custom roller cam .602/.612, 224/232@.050, 108 LSA
Scorpion roller rockers
Lunati roller lifters w/tie bars
Carb not decided..leaning towards a Pro-Systems 830-840 DP
11.44:1 CR
Sanderson Headers

Work is in progress.

[Johnny]

Sounds like it otta be a screamer...

[DNFXDLI]

Should be somewhere from 500-550 HP/TQ range. TMI's engine dyno showed a similar one making over 400TQ at 2000rpm. It's going in a 79 shortbox 4x4.

[JfB_93]

Damn......

[DNFXDLI]

After much research and waffling, it's looking like a Powerjection III F.I. instead of a carb.

[Johnny]

You will have to tell us everything about the FI system after you get it going... everything...

[CliffB]

I'd love to hear that thing run. very cool

[redmt79]

I would like to know more about the system as well. I am considering FI for my Bronco.

[DNFXDLI]

You will have to tell us everything about the FI system after you get it going... everything...

I'd love to hear that thing run. very cool

I would like to know more about the system as well. I am considering FI for my Bronco.

I've looked at a few systems such as Mass Flo, Holley, Megasquirt and even taking a Ford one but the Powerjection seems the most straightforward. It resembles a 4500 carb with the electronics where the float bowls would be and uses 4 injectors. There is a wideband O2 sensor for feedack. The software is looks very familiar as I am used to the ThunderMax and TTI Mastertune for Harleys...that was a deciding factor in the choice of the system as well.
Here is a link:
http://www.retrotekspeed.com/products/powerjection-iii/

[Johnny]

Yeah I've looked at them, but never talked to anybody that has ran one in the real world...

[DNFXDLI]

I haven't either...but I've been beyond happy with the ThunderMax systems on the bikes, esp. when I got the advanced software so I'm drawing some conclusions from that. If all goes well, it will be running this year.

[DNFXDLI]

Figured while I was posting some pics of the truck I'd add some of the engine stuff:

CHI 3V 225cc:

http://www.fordtruckfanatics.com/gallery/data/500/Engine_parts_036.JPG

http://www.fordtruckfanatics.com/gallery/data/500/Engine_parts_035.JPG

Intake:

http://www.fordtruckfanatics.com/gallery/data/500/Engine_parts_029.JPG

Rockers:

http://www.fordtruckfanatics.com/gallery/data/500/Engine_parts_028.JPG

Rod:

http://www.fordtruckfanatics.com/gallery/data/500/Engine_parts_026.JPG

4.25'' crank:

http://www.fordtruckfanatics.com/gallery/data/500/Engine_parts_023.JPG

Lifters:

http://www.fordtruckfanatics.com/gallery/data/500/Engine_parts_017.JPG

[DNFXDLI]

Once again procrastination pays off :D. After talking more with TMI, I opted for some grooved cam bearings and also the 4 bolt main caps.

http://www.fordtruckfanatics.com/gallery/data/500/79_truck_0124.JPG

[Gilligan]

OK..now I'm really jealous. I can't even get motivated to fix the oil leak and install the EFI on Filly's 400..and yr off building a monster.

[Johnny]

Sweet... mines just sitting in the back of the garage gathering dust...

[redmt79]

OK..now I'm really jealous. I can't even get motivated to fix the oil leak and install the EFI on Filly's 400..and yr off building a monster.

What EFI you running, Commander still or somethign else?

[Gilligan]

What EFI you running, Commander still or somethign else?

Still nothing but Commanders. Am looking forward to trying out Holley's newest EFI system though, that just came out last year...probably when I rebuild my '79 Bronc.

[redmt79]

Been doing some casual shopping, seems to be a lot of used Commander parts on Ebay. Was giving me the impression that they might not be the most reliable.

[Gilligan]

Been doing some casual shopping, seems to be a lot of used Commander parts on Ebay. Was giving me the impression that they might not be the most reliable.

Never experienced nor heard of any realibility issues meself. One of my 950 installations is 7 years old and counting...

[OldesBronco]

Just brought my 400 home from the machine shop in May. TMI stroked 400 to 434 cu in. CHI 2V heads. 4-bolt main caps. 10.3:1 KB pistons. Comp custom ground cam. custom oil pan. yadda yadda yadda. Haven't dyno'd it yet as I am going to do a frame off restoration on a 79 RXLT. Dyno program estimates 560 ft lbs torque and 450 hp! I hope for more hp!

[mrw]

Let see some pictures, of the motor and the resto. Most of us only hang out here for the truck porn (and to bust each others balls . . . )

[78-88BroncoBoy]

MY 351m tore up a crank after sitting in a lake for three hours waiting for my dads 86 bronco to come pull me out so i built up the 400 i had in my garage so my 400 with an edlebrock intake and holly 650 with headman headers boss heads and an energizer cam is laughing it's self to sleep looking at the blown 351 sitting on the shelf. and p.s nothing is better to piss off a bunch of jeepers than a 400 with a t18 4 speed 78bronco with a 4in lift and 35's with an air horn as they struggal up a hill.

[abrojal]

TMI 4.25'' stroker crank
KB Pistons
CHI 3V 225cc heads
CHI intake
Comp Cams custom roller cam .602/.612, 224/232@.050, 108 LSA
Scorpion roller rockers
Lunati roller lifters w/tie bars
Carb not decided..leaning towards a Pro-Systems 830-840 DP
11.44:1 CR
Sanderson Headers

Work is in progress.


I know this is old, but, what about this 434 build?

[abrojal]

this is my ex 351M, now 406 CI

Tmeyer 400 Hypereutectic Piston 9,3:1 . 0,20 over
Premium Rings
"335" series-Gear Drive-Quiet
400 Crankshaft Kit
Scorpion Roller Rocker Arms
Engine Tech cam HP Stage 1
Weiand action plus + intake
Barry Grant Demon Road Series 625cfm carb
Hedman headers
SS valves
Stock heads


Soon, MSD ignition

[JfB_93]

Did you have the heads decked or a mild port and polish?

[DNFXDLI]

I know this is old, but, what about this 434 build?

Still working on the rest of the truck :D. If all goes well, the engine will be put together over this winter.

[freak]

CHI heads! Music to my ears, those will be part of my next engine build that's for sure.

[fordaholic495]

Just got done with a rebuild on my 351m. :D
Haven't gotten to drive it yet.
I have a build thread on it over at Fullsizebronco.com.
http://www.fullsizebronco.com/forum/showthread.php?t=206409

[Johnny]

Looks like you did a pretty good job and learned some things to boot.... congratulations.... and welcome to our site... sorry it took so long to reply to your thread/first post, but I've been real busy and haven't had the chance to actually sit down and read lately...

[abrojal]

Still working on the rest of the truck :D. If all goes well, the engine will be put together over this winter.

Is it finished? :confused:


I´ve never seen a 434 in a bronco, and I really like the idea. I got one stock400 in the black bronco and the 434 appeals to me

[georgeT]

i was told that i mite get some advice here? i think i mite need a new carb the one i have it just don't have that punch when i hit the gas, or is it just the 351m? not sure. im trying to keep it (bronco) like they did when it was new. plus retiring from usmc i really dont have a lot to drop into it right know, time i have a lot of.

GTG

[DNFXDLI]

Is it finished? :confused:


I´ve never seen a 434 in a bronco, and I really like the idea. I got one stock400 in the black bronco and the 434 appeals to me

Not yet...seems I have too many projects and too little time >M<: