View Poll Results: IS THE 400M GOOD FOR HIGH RPMS?

NO THAY BLOW UP

BUILD EM RIGHT AND THAY SCREAM

61.54%

ONLY UP 5500 RPMS

38.46%

NO,THAY HAVE OIL PRESSURE ISSUES

Multiple Choice Poll. Voters: 13. You may not vote on this poll

Building My 400m

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Dec 17, 2005 | 09:38 PM

RENNIERC

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Posts: 34

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From: CENTRAL NEW YORK

Building My Ford 400m.

I Am Currently Building 78 400m.bored .30 Over.badger Flat Top Pistons.holly 650.edelbrock Performer 400 Intake(non Egr).hei 50k Distributor.camd Shaft Is A Comp .494/.494 Lift,268/268 Ad Deration,218/218 At .050.110 Degree Lobe Speration.comp High Energy Lifters.double Roller Tieing Set With 3 Sets Of Tieming Marks,4 Degrees Retard,0 Degrees,4 Degrees Advanced.what Should I Set The Mark To?roller Tip Only Rockers.hardend Push Rods With Guid Plates.i Will Be Getting New Hardware For The Heads Soon.with The Stuff I Have In This Engine Now,what Work Should Be Done To The Head(stock Heads Open Chamber).port,milling?.also This Is In A 78 Merc Grand Marquis.fmx Trans. 9 Inch Rear With 3.70 Gears.with Current Engine In The Car I Am At 2800 Rpms At 55.i Will Be Pulling A 5000 Lb Camper.will The New Engine Work Well For Toweing And High Rpms?thanks So Much For Any Help!

Dec 17, 2005 | 09:54 PM

RENNIERC

Thread Starter

Freshman User

Joined: Dec 2005

Posts: 34

Likes: 0

From: CENTRAL NEW YORK

Building My 400m

I Am Currently Building A 400m.bored .30.badger Flatop Piston.holly 650 Carb.edelbroc Performer 400 Non Egr Intake.roller Tip Only Rockers.cam Is Comp Cam .494/.494 Lift,268/268 Ad Deration,218/218 At .050,110 Lober Seperation.comp Cam High Energy Lifters.hei 50k Distributor.hardend Push Rods With Guids.double Roller Timeing Set With 3 Timeing Position 4 Degree Advance,0 ,4 Degress Retard.what Mark Should I Set It To.what Work Should Be Done To Heads?i Cant Find Headers(sorry This Engine Is Going In My 78 Marquise)trans Is The Fmx.9 Inch Rear With 3.70 Gears.is My Set Good For Towing A 5000lb Camper?oh Also Has A Melling High Valume Oil Pump And Oil Cooler.IF THIS CAM IS NOT WHAT I SHOULD BE USEING,COULD SOMEONE GIVE ME SPECK FOR GOOD CAM.

Last edited by RENNIERC; Dec 17, 2005 at 10:05 PM. Reason: NEED TO ADD MORE INFO

Dec 17, 2005 | 09:56 PM

GreenSubmarine

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Joined: Feb 2005

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I would suggest setting it at 0 (straight up). adjust your timing from there for total advance using the distributor. It seems your cam may like higher rpms than you're intended use, but that depends on your converter as well. As far as head work, generally there are always performance gains when the heads are properly ported to maximize flow. However, unless you plan to port them yourself (and really want to), I don't think you will realize enough of a gain to justify paying to have them ported. I can't offer an opinion as to towing because I've not used this cam in a car, nor have I ever had an fmx tranny.

There are plenty of other folks here that will be of more help; and hopefully one of the mods will move this thread to the 335 forum. Check there for tons of other useful info.

Dec 17, 2005 | 10:48 PM

Mil1ion

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Joined: Jan 2008

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Welcome to the site

As a long time member of FTE may I offer these thoughts.

May I suggest contacting a moderator and have thread this moved to the engine re-building or the 335 engine series forum

Btw, Specifics ! There is not an M after 400.

The M designation goes after the 351 as in 351M.

The engine family is known as the 351M/400

Maybe just refer to it as a 400 ?

FTE also has a special 335 engine series forum that is for the discussion of this engine.

Dec 18, 2005 | 05:39 AM

roger dowty

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Joined: Mar 2005

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From: western montana

nice build

sounds like a solid build that will net over 330hp and 420 ftlbs or so. I'd do some work on the heads- I am.... and just got in from working on them this am- polish the combustion chamber (to guard against hot spots) and work at cleaning up the exhaust port- don't do a whole lot to the intake. Straight up on timing. Most recommend a dual duration cam but the difference on paper didn't seem too dramatic. Your duration should lend to the higher rpms- and will suck more gas- but probably a lot of torque and ponie at 3800-4000 or so. SOme here have the desktop dyno and will make my projections look bad..i'm just blathering on based on memory.

That is a very solid build IMO for the rpm range that you are looking at...saying that... I would probably have gone with the extreme energy (XE262) for your build but could be off too..also would look at 3.5o gears. the roller tip rockers is a nice touch. If I were to shop ebay for an inexpensive build I would choose many of the parts you have as they are dirt cheap and good parts...I spend a lot of time looking there myself.

nice!!!

Last edited by roger dowty; Dec 18, 2005 at 05:42 AM.

Dec 18, 2005 | 05:52 AM

roger dowty

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From: western montana

Doubt that is a build you would want to get over 4500 on a consistent basis with. A stroker like this can scream- but- rpms kill motors and bulletproof parts are needed to include roller cam and lifters, H style connecting rods, nod crank, forged pistons, on and on and on. Another $4-5K and you could probably do it. The 400 is the best motor for trucks imo and a stroked cleveland can surely be built to absolutely scream...but lots of money and science have to go into it as not many do it..or have done it. Your build is best for under 4500 where you will have lots or torque to pull what you what where you want and if you get your cam down a bit you enjoy great gas mileage with a kick A motor as well... not anything to be ashamed of!

danlee, TMI and others will come hopping along pretty soon and they know exactly what you would need to do and they are working on such projects and experimenting as we speak.

An engine has to know it's limitations and you have a great mid range build going.

Dec 18, 2005 | 12:43 PM

RENNIERC

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Joined: Dec 2005

Posts: 34

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From: CENTRAL NEW YORK

I Am Looking Into The Cam Shaft You Recomended(xe262)i Should Have Posted Here Before I Wasted $125 On The 268h Cam.oh Well At Least The Engine Is Not All Together Yet.oh Ya Any One Interested In The 268h.never Even Taken Out Of The Box!!