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daily cruiser speed

Discussion in '40- & 55-Series Tech' started by Benji, Feb 18, 2004.

  1. Benji

    Benji

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    I recently purhased my cruiser to replace my previous daily dirver. I drive my FJ60 about 60 miles a day going to and from work. I usually cruise the intersate at about 65 or 70 mph. Is this too fast for the 2F motor with the 4 speed transmission to handle each day? At 70 I am running about 3300 rpm. It seems to run just fine, just wondering if it is going to wear it down prematurely.
    Thanks
     
  2. HeepKrushr

    HeepKrushr

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    I cruise my 84 '60 at 65 with no problems - it should be fine, although Iwouldn't push it much past 70. If it was my DD, definitely not much more than 65 (as if it would even go much faster than 70 :D)

    I had a 77 fj40 with 2f with a 3 spd (transplant by previous owner - said he couldn't find a 4 speed to put in) Anyway, the motor blew after driving at 60-65 for a couple years of light highway use - usually 30 miles at a time. I think that it had a lot more to do with the 3 speed than the engine though - just too many RPMs on a consistent basis killed it.

    Krushr
     
  3. 72cruiser

    72cruiser

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    i haven't had any problems with my 2F runnin 65-70 mph.

    i have a 3spd, but still 1:1 in 3rd, so it's the same deal.

    redline is 4k, so as long as you're not gettin up there, you should be aight.


    malphrus
     
  4. VTCruiser

    VTCruiser

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    look into a five speed tranny with OD for better highway driveablity and fuel mileage. Might not be a bad investment if you commute a lot and plan on keeping the rig for a while.
     
  5. drohweder

    drohweder

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    Just put some 35s on it and benefit from the "longer legs". At 2650 rpm with a 4.11 and 35s I'm doing 65mph Don't know what 3K equals but over 70 for sure. Got a sbc if that makes it different?
     
  6. BigSur

    BigSur

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    Got some 31's on my FJ60 and at 2500 rpm's i am at 60mph. At 2750 i am at 65. The bigger tires really help out big time.
     
  7. Landpimp

    Landpimp

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    sound like the tires are stock 235's(28") to be turning those RPMs at 70mph. With 33's, 4.11's(yes 4.11 ;) I run about 3000k at 70mph.........I think, hell its hard to keep all this in my head ;)

    your not killing the 3F at 3300 but lower is prolly better.
     
  8. Romer

    Romer fatherofdaughterofromer Moderator

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    I drive 65-70MPH on the highway with no problems. I have 33 inch tires that really help.
     
  9. CruisinGA

    CruisinGA

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    I drive 70-75 for 150 miles at a time, to the mountains.
    Worn out old F with 3 spd and 33's. Hits 80 without much issue on slight downhill. The new ign. should help, the old distributor oscillated and started to sputter above 75.
     
  10. Gundy

    Gundy

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    Taller tires will really help lower those highway RPMs.
    31s will even be a noticeable change from stock tires.
    A GPS is great for nailing down the corrected speeds.
     
  11. 72cruiser

    72cruiser

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    yeah, i have 31s on mine with stock 72 diffs.
     
  12. Cal99

    Cal99

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    My 6.0 vortec and 4L80e do wonders for my highway cruising ability :D
     
  13. Benji

    Benji

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    Thanks guys, I have stock tires on now, but soon 31 X 10.5 BFG ATs wil replace them. I used a GPS to see if the speedo was on right when I bought the truck. I was amazed that a 20 year old truck has EXACT speedo readings. Good idea to use GPS to check actual speed reading if your ever curious if yours is off. Thanks for the help.
    Benji
     
  14. drohweder

    drohweder

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    Go bigger!! 60s look so cool with 33s :D
     
  15. Benji

    Benji

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    Will 33s fit on stock suspension? If so are they going to rub with articulation? I don't have the money for a lift, so that will be waaaay in th future. For now is my best bet 33s or 31s?
    Cheers.
     
  16. TJDIV

    TJDIV Back in The U.P.

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    Anyone want to guess how fast my 1970 goes with a 350, 700R4 and Dana 44's with 3:40 gearing?
     
  17. VTCruiser

    VTCruiser

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    I have heard 33x9.5s won't rub even under flex. No personal experience. I have 31's now and am considering 33's too.
     
  18. toddslater

    toddslater

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    TJDIV,

    I've tried to post this a few different ways..lets see if it works
     
  19. toddslater

    toddslater

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    lets see if I can make that bigger
     
  20. VTCruiser

    VTCruiser

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    cool. *right click-save*

    :cheers: