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    #1

    351 Modified?

    So I got a lead on a 351 engine with heads and block for $300!

    I asked the guy about it and he said this:

    "It's actually called the 351 modified. Ford put them in there lat 70s early 80s pick-ups. It has no air intake or carb but the rest is there. It can be rebuilt into ford 400. Not completely sure what needs to be done to do it though. But if your planing on doing a rebuild it's a foot strong engine."

    Would that motor fit inside of our kinds of cars?

    Also, I think I might need help carrying it home...
    Tags: None
    #2
    It would fit great in a dumpster.
    2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
    2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
    2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
    1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIP

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      #3
      Boat anchor. You have more success with a roller 302-351

      1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
      1987 Lincoln Mark VII 5-speed (Errand runner)
      1989 Mercury Grand Marquis (Base Runner)
      2007 Lincoln Town Car Signature Limited (Hustlyn)
      2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)

      Comment

        #4
        Originally posted by pantera77 View Post
        It would fit great in a dumpster.

        Only nice way to put it! lol

        1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
        1987 Lincoln Mark VII 5-speed (Errand runner)
        1989 Mercury Grand Marquis (Base Runner)
        2007 Lincoln Town Car Signature Limited (Hustlyn)
        2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)

        Comment

          #5
          they share basically nothing with a 351w. Its not a particularly good engine, and its not desirable. Lots of work, absolutely no gain. The best you could do with that is snatch the heads from it, have some work done to them, and find the special clevor intake required to use Cleveland style heads on a Windsor engine block. That would get you a runner. Or you could just buy aftermarket 351w heads and a suitable intake for probably the same or less money and make more power at the same time.
          86 Lincoln Town Car (Galactica).
          5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

          91 Lincoln Mark VII LSC grandpa spec white and cranberry

          1984 Lincoln Continental TurboDiesel - rolls coal

          Originally posted by phayzer5
          I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

          Everything looks like voodoo if you don't understand how it works

          Comment

            #6
            So don't go for it. Got it.

            Comment

              #7
              Do you still have the LTD? My '79 TC has the 400. Rear has economy gears (IIRC, 2.47 ratio) so it's slow starting out. Enough torque for me though, once the car is rolling along.
              '79 Continental Town Car
              '90 Crown Victoria LTD
              '94 Crown Victoria

              Comment

                #8
                The 351M/400 also needs a different tranny as they share the same bell hsg pattern as the 429, 460 (385 series) engines. They are not boat anchors basicly cost about as much to build as anything else.
                Have one in my 79 F150 FWD juced up for towing, pocket ported heads, highway towing cam, fender well headers, offy intake, 750 Holley, 4.11 gears, 33" BFG all terains. Have had it up to 140MPH and has wooped ass on quite a few vehicles concidered quick and fast.
                Scars are tatoos of the fearless

                Comment

                  #9
                  Originally posted by turbo2256b View Post
                  The 351M/400 also needs a different tranny as they share the same bell hsg pattern as the 429, 460 (385 series) engines.
                  I used to think this was the case, but the 400 does NOT use the same bellhousing on the C6 as the 429/460. I believe the 400 uses the small-block bolt pattern. A buddy of mine has a 460/C6 and 400/C6 sitting next to each other in his shop so I can double-check next time I'm there. I do believe the C6 behind the 302 in the trucks is the same bellhousing as with the 400.
                  RyPow
                  1987 LTD Crown Victoria LX sedan - The "Sand Box" - 73K, towing package
                  1987 LTD Crown Victoria LX Tutone Tudor - '96 Explorer 5.0 + 5spd swap in the works
                  1985 Lincoln Town Car Cartier - previously owned by "navguy12" from thelincolnforum.net
                  2007 Lincoln Town Car Signature Limited, 102k, daily driver
                  2006 Mercury Grand Marquis LS, 115k, winter beats
                  1977 Lincoln Continental Town Car, 42k
                  2012 F-150 5.0L 4x4, HD payload pkg (towing/hauling)
                  2015 Toyota RAV4 XLE AWD (better half's)

                  Comment

                    #10
                    I have only seen one 351C in a truck a friend ordered new wasnt a special order or anything. 400s are 385 series bell hsgs many call them 400Ms but only the 351s had the M designation to noter they had a different bell hsg compaired toi the 351C. 351mAND 400 ARE the same block.
                    Scars are tatoos of the fearless

                    Comment

                      #11
                      400 is a "big block". It bolts to the same trans a 460 does. Its not a true big block, its more or less a smallblock that has the big block trans bolt pattern. This isn't neccesarily a bad thing though. They put those in trucks and heavy-ass cars where you wanted the heavy duty transmission.

                      I think the 400M thing comes from the emissions labels used, which said either 351M/400 or 400/351M. I forget which way, but it had both numbers there. But yeah, same block.
                      86 Lincoln Town Car (Galactica).
                      5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

                      91 Lincoln Mark VII LSC grandpa spec white and cranberry

                      1984 Lincoln Continental TurboDiesel - rolls coal

                      Originally posted by phayzer5
                      I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

                      Everything looks like voodoo if you don't understand how it works

                      Comment

                        #12
                        C6 on a small block is a small block bolt pattern
                        Scars are tatoos of the fearless

                        Comment

                          #13
                          I still have the 1976 LTD. I haven't plugged it in since before it hit -36C here. It may or may not be dead.

                          Comment

                            #14
                            There was only one 400 engine that would interchange with a 351C....full sized Ford, 1973 with an FMX transmission. The PHB-AD 400 block had the 351C bolt pattern. I had a couple of 335-series engines one in a 73 Country Squire and a 351M in a 77 F100 truck. Both engines ran fine and where fine for these big ole Fords, but as stated, are not really candidates for high performance purposes. There was also an issue with blocks cracking with one of the foundries, believe it was the MCC foundry. The 400 was an "over-square" design so it made good torque at low RPMs (ie truck applications) but many of them ended up in LTDs and some 77-78 T-Birds.
                            Edit: Block casting number for 400 with 351C bolt pattern - D3AE-B
                            Last edited by P72Crazy; 01-10-2014, 10:48 PM. Reason: Add block casting number

                            Comment

                              #15
                              There are a lot of truck guys running 400s with 4v 351C heads that would differ on the performance aspect. Some have gone with aluminum heads. They are quite a bit heavy withthe taller decks and 385 bell hsg pattern than a 351C. tHEY WILL IN MOST CASES GET BETTER ECONOMY THAN A 460.
                              Scars are tatoos of the fearless

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