Engine Tech: Power Secrets of the "400 Cleveland" Revealed! - Trucks 4x4 @ Off-Road.com
Engine Tech: Power Secrets of the "400 Cleveland" Revealed!
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onejuglugger / jordan, MN, UNITED STATES
 Posted Dec 23 2007 01:37PM
ok i know that this is for more towards the 4x4 industry but i have a 400 in a 77' T-Bird with a C-6 and a 9" rear with mid 3's for gearing. and i dont know much about the cam being retarded 4 degrees so specificly what would u go with for a setup on that if you wanted a semi high lobe but still idle and what specificly do i have to do to get rid of that 4 degree drop?
elkslayer / lebanon, OR, UNITED STATES
 Posted Jan 22 2008 04:43PM
hey i have got a 400 im putting it in my 77 ford f-150 and im not real sure what kinda cam to put in it its gonna be my daily driver and weekend wheeler i have blown up 3 motors in it already i want something thats gonna be torky yet take some rpms also so any suggestions???
rc / anderson, 46012, IN, UNITED STATES
 Posted Feb 20 2008 05:33PM
does the flywheel interchange from a 351m to a 400
george / grawn, MI, UNITED STATES
 Posted Mar 29 2008 05:32PM
thank you for this site. it gives me a direction to go with my 1979 f-350. thank you again
randy / w. melbourne, FL, UNITED STATES
 Posted Feb 12 2009 10:38AM
i own a stock 77' f-250 w/a 400m, c6 on 36 militaries it runs but like crap. runs a high of 10 psi vaccum. i rebuilt the carb now it revs smooth but runs choppy w/ steady throttle. i plan on 44''s and just a mud truck what would be the best mods for a torque motor? ps. runnin like that i spent all day new years pullin out chevies in canaveral groves off 520 in cocoa fl. ill never get rid of this truck!! im in college and have a very slim budget to keep in mind as well. thanks for any help!!!
Erik redlich / Glaslyn, CANADA
 Posted Mar 14 2009 11:01AM
Edlbrock has aluminum heads for the 400 do they not. would this be a better way to go or not(if u could aford them)? What would be the casting number of the heads you recomened(cast iron)? I dropped a 400 into my 76 f100 short box, a eddie performer intake,cam,600carb.,headers & 2in exhaust. valve seats pushed up into head,took them in to get seats done and the shop had no record of myheads being there!( after I spent hours porting them!) so now looking for a good set of heads. any info would be great thanks Erik
evifj / kalispell , MT, UNITED STATES
 Posted Jun 21 2009 04:19PM
there are some really good after market heads out of australia for the 351 clevland and they are the same as the ones on the 400m use them for the best results and they make different runners for different applications.
eight duece / farmington, NM, UNITED STATES
 Posted Jul 07 2009 10:58PM
Having trouble locating headers for 82 ford f250 4 x 4, 400 (6.6L) anybody have any suggestions?
BrutalBronco / Liberty, IN, UNITED STATES
 Posted Aug 11 2009 09:12AM
Here are some serious recommendations for the 400 Ford. First install an adjustable timing chain to advance the cam; heads up (zero advance) for stock/RV size, and 4 degrees advance for any cam over 210 degrees at 0.050" intake duration. I'll also recommend headers for any cam larger than 210 @ 0.050". 400's are prone to bending pushrods over 5500 RPM. So, next upgrade would definitely be using hardened pushrods. I've personally done this simple swap and gained 600 RPM (with stock pedestal rocker arm arraignment). From experience, next upgrade is to change those triple grove valves to single groove valves. Use a buddy's base 460 valves. More in-depth upgrades would be converting from pedestals to quality rocker arm studs, full roller, or roller tipped rockers (CompCams 1411-16 for 140-160 bucks are a great value/hp upgrade) and guide plates (see why I recommended the hardened pushrods already?). This is a machining process that should be done by a reputable machinist. Do your own double check to make sure that the stud's threads do not have a bur underneath the guideplate as this bur will cause the hardened plate to break, when torqued under the stud, which spells disaster. About that supposed oiling problem...all that I can say is pay attention when you install the oil gallery plugs when the block is built. If they are inserted too far they restrict oil pressure. Hmm, another 'simple' 400 fix. Remember it ain't leaking, it's sweat from all that horsepower.
 
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