Results 1 to 6 of 6

rpm range?

This is a discussion on rpm range? within the Classics forums, part of the General Discussion category; what is the rpm range of the 70's era 350's. I've been wondering what i'm turning at highway speeds. My ...

  1. 08-03-2009, 08:05 PM #1
    77 bonanza
    77 bonanza is offline
    Registered User
    Join Date
    Jul 2009
    Location
    lebanon, mo
    Posts
    23

    rpm range?


    Support FSC and see no ads! - Click Here
    what is the rpm range of the 70's era 350's. I've been wondering what i'm turning at highway speeds. My truck is loud but at 55 and up wind and tire noise take over. hooked up a tach today and get 70mph @ 3000rpm's. at full throttle take off my tranny shifts at about 4000 rpm's. just wondering if that sounds right, don't know how accurate my cheap tach is.
    Reply With Quote Reply With Quote
  2. 08-03-2009, 11:51 PM #2
    flamingc10
    flamingc10 is offline
    Registered User flamingc10's Avatar
    Join Date
    Oct 2007
    Location
    Dallas Texas
    Age
    23
    Posts
    127

    Re: rpm range?

    sounds about right my truck at 70 is turning 3500rpm
    Last edited by flamingc10; 08-03-2009 at 11:53 PM.
    1980 c-10 show truck/daily driver/project truck/work truck
    Reply With Quote Reply With Quote
  3. 08-04-2009, 12:12 AM #3
    GreaseDog
    GreaseDog is offline
    Supporting Gold Member GreaseDog's Avatar
    Join Date
    Dec 2004
    Location
    Elkhart IN
    Age
    32
    Posts
    16,121

    Re: rpm range?

    Quote Originally Posted by flamingc10 View Post
    sounds about right my truck at 70 is turning 3500rpm
    sounds a bit high.
    77 Chevy K20 - 80 GMC K2500 (in pieces)
    90 Chevy K3500 - 93 Chevy C2500 (in pieces) - 94 Chevy K1500
    Reply With Quote Reply With Quote
  4. 08-04-2009, 03:21 PM #4
    vic_V8
    vic_V8 is offline
    bikes cars trucks women vic_V8's Avatar
    Join Date
    Jan 2004
    Location
    Dixon IL
    Age
    30
    Posts
    3,626

    Re: rpm range?

    most 350s rev to 5,500 or so

    your RPMs are in direct effect of the rear end gears, tire radius, and Transmission Gear
    91 camaro
    1992 K2500 6.5 Turbo Diesel/4L80e/4.10s (sas with Dana 60 just sitting around waiting for a rainy day)
    '84 K10, 6" Tuff Country, now 1 ton frame swap and Cummins swap have begun
    '77 F250 Hi-Boy 400 C6 NP205
    Veteran of Afghanistan (Army SGT)
    Reply With Quote Reply With Quote
  5. 08-04-2009, 04:52 PM #5
    ryan_thompson87
    ryan_thompson87 is offline
    Real 4x4s' Rust ryan_thompson87's Avatar
    Join Date
    May 2007
    Location
    Portage La Prairie, Manitoba, Canada
    Posts
    3,027

    Re: rpm range?

    Quote Originally Posted by GreaseDog View Post
    sounds a bit high.
    Mine spins about 2900 at 70 mph. However the speed limit here is about 60 so I'm rarely going that fast.

    '87 K30-355 Vortec TBI/TH350/208/Dana 60F/12B(14B Soon)/4.56s/37"Bogger/36"TSL/Ult.TBI Mods/XtremeFI FPR with vac. reference/EP241 Pump/LS1 Fans
    GMPP/Melling/Flowtech/Dynomax/Tuff Country/Motive/Hella

    07 GMC Sierra Classic - Stock.. for now

    Reply With Quote Reply With Quote
  6. 08-04-2009, 08:23 PM #6
    77 bonanza
    77 bonanza is offline
    Registered User
    Join Date
    Jul 2009
    Location
    lebanon, mo
    Posts
    23

    Re: rpm range?

    thanks guys
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

     BMW - Cadillac - Camaro - Corvette - Mercedes - Mustang - F150 - Ferrari - Lamborghini - Porsche - Ranger