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Whither the 5.8 VV after 1985?

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    #1

    Whither the 5.8 VV after 1985?

    So, maybe this is a dumb question.....

    But once the SEFI HO 5.0 came out in 1986, why did Ford continue using the 5.8 VV in the police cruisers (also available to public in Canada I think)?

    I mean, even when saddled with the E6 heads, the 5.0 HO produced more horsepower and torque than the 5.8, albeit at a higher RPM.

    It seems to me, at least in theory, that giving the police cruisers the 5.0 HO motor, and steeper rear gears, might've been extremely beneficial, one, from a reliability point of view, and two, from a fuel-usage point of view, given that I've seen people refer to the horrible fuel economy those 5.8s had. I imagine emissions would be easier to control with the SEFI cars as well.

    So, why'd they not do what I suggest? I mean, ok, it's not like they can turn on a FutureVision device right now and from the year 1985 or so ask me in 2009 what they should do? Surely it must've occurred to *someone*, so why'd they stick with the 5.8?

    Just curious is all....
    1987 Ford LTD Crown Victoria 2-door Coupe - perpetually "sort of" for sale...
    Black with Red cloth (velour?) interior.
    Purchased on 10/10/2008, with only 70,386 original miles, and only ONE previous owner.
    Reader's Ride post, First pic with "new" rims, Other pics with "new" rims
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    #2
    I have thought the exact same thing...It may be just stupidity, the PD's interested in the cars may have seen the bigger engine and jumped on them, figuring they were more powerful, and the dealers and manufacturers went along with this trend in order to sell more...just a theory...At the very least they could have made the 351's fuel injected as well...or put a bigger carb, but oh well
    -Phil

    sigpic

    +1982 Ford LTD-S Police Car. Built 351w, Trickflow 11R 190 Heads, Holley Sniper EFI, RPM Intake+ Hyperspark dizzy, WR-AOD, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, HPP Steering Box.

    +2003 Acura CL Type S 6-speed

    Comment

      #3
      i am fully prepared to get slapped down on this one but i also heard that the variable venturie carbs on those 351s kinda sucked.......

      Comment

        #4
        SEFI 5.0 with dual exhaust made 160hp and 280 ft/lb of torque. I believe the 351/vv made 180hp and 285 ft/lb of torque. Not a huge difference by the numbers, but I've never driven a 351/vv car so no clue if they actually feel significantly different than a sefi 5.0.
        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

          #5
          I have driven both. The LO 5.0 seems to really run out of steam anywhere above idle... ; my stock 351 VV car felt stronger.
          **2012 Ford Mustang Boss 302: 5.0/ 6 spd/ 3.73s, 20K Cruiser
          **2006 MGM,"Ultimate": 4.6/ 2.73/ Dark Tint, Magnaflows, 19s, 115K Daily Driver
          **2012 Harley Davidson Wide Glide (FXDWG):103/ Cobra Speedsters/ Cosmetics, 9K Poseur HD Rider
          **1976 Ford F-150 4WD: 360, 4 spd, 3.50s, factory A/C, 4" lift, Bilsteins, US Indy Mags, 35s Truck Duties

          Comment

            #6
            hmmm, my car which has the VV 351 is signifcantly less responsive and slower than my friend Johns Sefi-lopo 5.0.... it runs great just doesnt seem to have the go...we both havve 2.73 rear gears...
            -Phil

            sigpic

            +1982 Ford LTD-S Police Car. Built 351w, Trickflow 11R 190 Heads, Holley Sniper EFI, RPM Intake+ Hyperspark dizzy, WR-AOD, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, HPP Steering Box.

            +2003 Acura CL Type S 6-speed

            Comment

              #7
              The 5L definitely has better throttle response, but they roach out really quick. My car, and the 5L I have also had/have 2.73s. The early 351s were rated less than 180 hp, weren't they?
              **2012 Ford Mustang Boss 302: 5.0/ 6 spd/ 3.73s, 20K Cruiser
              **2006 MGM,"Ultimate": 4.6/ 2.73/ Dark Tint, Magnaflows, 19s, 115K Daily Driver
              **2012 Harley Davidson Wide Glide (FXDWG):103/ Cobra Speedsters/ Cosmetics, 9K Poseur HD Rider
              **1976 Ford F-150 4WD: 360, 4 spd, 3.50s, factory A/C, 4" lift, Bilsteins, US Indy Mags, 35s Truck Duties

              Comment

                #8
                yes i believe mine is rated at 140... , honestly i dont know what the difference is tho?
                Last edited by Brown_Muscle; 04-08-2009, 09:42 PM.
                -Phil

                sigpic

                +1982 Ford LTD-S Police Car. Built 351w, Trickflow 11R 190 Heads, Holley Sniper EFI, RPM Intake+ Hyperspark dizzy, WR-AOD, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, HPP Steering Box.

                +2003 Acura CL Type S 6-speed

                Comment

                  #9
                  Probably the heads. I think they changed from a D8 (1978) casting to an E5 (1985) casting in, well, 1985. The cam may also be slightly less craptastic. I have an 85 powertrain book here somewhere that I can dig the cam lift specs out of, but unless someone has an earlier book to compare it against the numbers are meaningless.
                  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

                    #10
                    hmm ive been meaning to find that out for a while...might be a good upgrade too if i go four barrel....
                    -Phil

                    sigpic

                    +1982 Ford LTD-S Police Car. Built 351w, Trickflow 11R 190 Heads, Holley Sniper EFI, RPM Intake+ Hyperspark dizzy, WR-AOD, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, HPP Steering Box.

                    +2003 Acura CL Type S 6-speed

                    Comment

                      #11
                      only one way to find out...... find two stock ones and drag em!

                      Comment

                        #12
                        Ford was allready doing research to develop the 4.6 to replace both the 302 and the 351. They just didn't think it was cost effective to improve both of the older engines, especially when the 351 had limited use by this time anyway (police cars and some trucks).

                        Comment

                          #13
                          ^ Hadn't thought of that angle.

                          At least the 351 can make many large gobs of torque with very, very basic upgrades (E7 heads, $50 Summit 4400 cam, and standard Edelbrock Performer carb and intake).

                          And yes, the 140hp rating on '79-'84ish 351s was awful (same as the '03-'05 2.2L Cavalier!), but at least it was better than the 130hp 302 or worse, 110hp 255 from similar years.
                          2012 Mazda5 Touring | Finally working on the LTD again!

                          Comment

                            #14
                            the 1975 granada 302 was 128 hp

                            1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
                            2006 Lincoln Town Car Signature. Stock for now
                            1989 Ford F-250 4x4 much much more to come, sefi converted so far.
                            1986 Toyota pickup with LSC wheels and 225/60/16 tires.
                            2008 Hyundai Elantra future Revcon toad
                            1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

                            please be patient, rebuilding an empire!

                            Comment

                              #15
                              late seventys early eighties were a sad time for most engines.....)=

                              Comment

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