Birty Dastards Jeep Club

Please login or register.

Login with username, password and session length
Advanced search  
Pages: [1]   Go Down

Author Topic: Cj7 top speed  (Read 5701 times)

0 Members and 1 Guest are viewing this topic.

birdy

  • Guest
Cj7 top speed
« on: March 03, 2015, 08:53:34 PM »

Ive got an AMC 360 with a th400 and currently 31 inch tyres (They'll be 35s at the weekend though) itll do about 70 I reckon but itll be screaming at that so not pushed it passed 60 which is about 3000 rpm.  does this sound right?  Hopefully 35s will drop that a bit.

Ta
Logged

Bulldog67

  • Arthur Daley: Graduated
  • Guru
  • *
  • Guru: -936
  • Offline Offline
  • Posts: 25395
  • Vehicle: Man Sized Old Iron
  • Anti Colour Truck Mafia - I'm The Fuckin Daddy
Re: Cj7 top speed
« Reply #1 on: March 03, 2015, 09:11:38 PM »

What axles? Are they stock? Do u know the ratio?
Logged
Bulldog's 22+ trucks: http://www.birtydastards.com/frm/index.php?topic=20288.0 :025:                                   :headbanger: 401 Dog * 401 Molotov :headbanger:  
Civilise the mind but make savage the body  :027:           Im only responsible for my karma :059:

xr6jeeper

  • Guest
Re: Cj7 top speed
« Reply #2 on: March 03, 2015, 10:14:03 PM »

I run 33s with 3.54 diffs and it will easily do 70 but i keep it just below because of the mud terrains  :hysterical:
Logged

5536paulj

  • Guest
Re: Cj7 top speed
« Reply #3 on: March 03, 2015, 11:34:39 PM »

Mine had that setup and would go well past 80 no probs, sounds like 4.1 gears to me, 35s will knock the stuffing out of it, make it long legged but a lot slower...

80+ in a cj is fun to say the least
Logged

birdy

  • Guest
Re: Cj7 top speed
« Reply #4 on: March 04, 2015, 06:28:27 AM »

Amc 20 in the rear. Not sure of the ratios, I'll have to check. It's standard as far as I know. It'll smoke the tyres in every gear as it is.  I am aware I should be doing stuff to the axle but I figured get the rubber then deal with the many issues later
Logged

IrishCJ6

  • Guru
  • *
  • Guru: 3
  • Offline Offline
  • Posts: 1033
Re: Cj7 top speed
« Reply #5 on: March 04, 2015, 01:45:30 PM »

I have a 360/T150 in my CJ6 with 4.27 gears and 33" tyres, I can see 75/80 in mine but it's not comfortable, 3200 is 75mph for me
Logged

mark

  • Guest
Re: Cj7 top speed
« Reply #6 on: March 10, 2015, 10:32:14 PM »

The only time my tyres smoke is when the nsr wheel locks up un expectedly under braking  lol ,, curious to take mine out tomorrow and see what rpm I am pulling at 60 .
Logged

Dave69

  • Club Member
  • Forum Member
  • *
  • Guru: 15
  • Offline Offline
  • Posts: 9457
  • Vehicle: CJ-7 4.2 auto
  • Year: 1979
Re: Cj7 top speed
« Reply #7 on: March 11, 2015, 07:28:59 AM »

 :iagree:

Makes more head turning noise than using the horn  :hysterical:
Logged
XJ 2.5 diesel - dead. XJ 4.0 6" lift - sold to some lucky person
CJ7 4.2 auto standard(ish)
Alfa 147 jtdm

CJWillie

  • Guest
Re: Cj7 top speed
« Reply #8 on: March 11, 2015, 01:41:01 PM »

I have 2.73 gears in my CJ5. Not the best offroad but helps gas mileage on the road. I pushed it past the 85mph on the speedo once. Scared the living hell out of me. Jeeps were NOT meant to go that fast!!!
Logged

Brynjaminjones

  • "Abe Lincoln"
  • Club Member
  • Guru
  • *
  • Guru: 8
  • Offline Offline
  • Posts: 2443
  • Vehicle: '98 XJ Cherokee 4.0 Limited, '97 ZJ Grand Cherokee 4.0 Limited, '91 Hunter Green SJ Grand Wagoneer 360
Re: Cj7 top speed
« Reply #9 on: March 12, 2015, 09:53:07 PM »

when the nsr wheel locks up un expectedly under braking


Must be a Jeep thing - my XJ does that occasionally :003:
Logged

birdy

  • Guest
Re: Cj7 top speed
« Reply #10 on: March 13, 2015, 10:50:49 AM »

35s havent changed it much,  seems to hold the road better than it did which is backward.  Loooks 100x times better though
Logged

birdy

  • Guest
Re: Cj7 top speed
« Reply #11 on: March 13, 2015, 10:51:55 AM »

I have 2.73 gears in my CJ5. Not the best offroad but helps gas mileage on the road. I pushed it past the 85mph on the speedo once. Scared the living hell out of me. Jeeps were NOT meant to go that fast!!!

Yeah I agree. I did 70 in mine.  Terrifying
Logged

Bubba

  • "Cooter"
  • Marshal
  • Guru
  • *
  • Guru: 69
  • Offline Offline
  • Posts: 21029
Re: Cj7 top speed
« Reply #12 on: March 15, 2015, 11:02:39 AM »

i never really thought much about this  but recall how impressed i was after several series landrovers that my cj6 and 7 was good for the clock

and also the fact that in the early 80s i could beat most cars off the lights  even if they could overhaul me on top end
Logged


trucks


shedric
cletus
mr whippy

I spent most of my money on alcohol, women and old  iron........ the rest of it I just wasted.

mark

  • Guest
Re: Cj7 top speed
« Reply #13 on: March 17, 2015, 03:33:53 PM »

35s havent changed it much,  seems to hold the road better than it did which is backward.  Loooks 100x times better though
Nice looking CJ  :icon_super:
Logged

birdy

  • Guest
Re: Cj7 top speed
« Reply #14 on: March 23, 2015, 05:03:36 PM »

35s havent changed it much,  seems to hold the road better than it did which is backward.  Loooks 100x times better though
Nice looking CJ  :icon_super:

Ta mate, doesnt look anywhere near as mean as yours though.

Sadly I think I may have to sell it to move house. I hate being a grown up
Logged
Pages: [1]   Go Up
 

Powered by EzPortal