Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: birdy on March 03, 2015, 08:53:34 PM

Title: Cj7 top speed
Post by: birdy 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
Title: Re: Cj7 top speed
Post by: Bulldog67 on March 03, 2015, 09:11:38 PM
What axles? Are they stock? Do u know the ratio?
Title: Re: Cj7 top speed
Post by: xr6jeeper 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:
Title: Re: Cj7 top speed
Post by: 5536paulj 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
Title: Re: Cj7 top speed
Post by: birdy 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
Title: Re: Cj7 top speed
Post by: IrishCJ6 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
Title: Re: Cj7 top speed
Post by: mark 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 .
Title: Re: Cj7 top speed
Post by: Dave69 on March 11, 2015, 07:28:59 AM
 :iagree:

Makes more head turning noise than using the horn  :hysterical:
Title: Re: Cj7 top speed
Post by: CJWillie 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!!!
Title: Re: Cj7 top speed
Post by: Brynjaminjones 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:
Title: Re: Cj7 top speed
Post by: birdy 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
Title: Re: Cj7 top speed
Post by: birdy 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
Title: Re: Cj7 top speed
Post by: Bubba 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
Title: Re: Cj7 top speed
Post by: mark 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:
Title: Re: Cj7 top speed
Post by: birdy 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