can you drive fast in your CJ? - Page 4 - JeepForum.com
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post #46 of 61 Old 02-26-2013, 08:36 PM
nacheswheelin
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Quote:
Originally Posted by SirWalcott
I dont have a speedo, but judging by the wind speed, time to distance ratio, and the reaction of all the fart can civics behind me on the way to work, I'd say I don't I over 40. 45 down hill… maybe. So no, I don't think I have ever sped in my jeep.
I know I've sped through town when I didn't have a Speedo 35 is usually about 2500 in 3rd but from 20 up to 35?


Who ever said less is more never owned a jeep.
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post #47 of 61 Old 02-26-2013, 08:48 PM
Cutlass327
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After the new TDK frame, springs, bushings, etc., I drove it a week later to TN going highway speeds of 65+. That 258 was spinning over 3k, sucked gas, but was a beautiful drive.

As for the 3spd vs 4spd top speed, remember that both top gears are 1:1, so either trans will have the engine spinning at the same rpm.

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

http://www.jeepforum.com/forum/f8/ri...8-cj5-1223197/
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post #48 of 61 Old 02-26-2013, 09:19 PM
JeffreyCharles
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I hit 65mph at about 2500 on my 258 (with three speed t-150). I don't think I've ever gone faster than that and generally I cruise at about 55 on the highway. I'm happiest tooling along at about 35-40mph. It's quiet, I get to see the world, and I like the slow pace. When I *am* going 65 I'm always on edge - very careful with the steering wheel and always watching many hundreds of yards out. I never do this in traffic. Needless to say, this happens maybe once a year. Who needs to go so fast?

Jeffrey Charles
http://jeep.smallcraft.net/
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post #49 of 61 Old 02-26-2013, 09:27 PM
lucdog
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With a CJ it's Just like a motorcycle . It's not about the speed or Destination. It's all a out the ride! At least for the most part.

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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post #50 of 61 Old 02-26-2013, 10:14 PM
Jclilk
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i got a quick question i got the 4.2 straight 6 and the T5 tranny 5 speed manual, how come when i shift into 5th theirs alot of noise but not when im in the other gears? my fastes speed is 65 but i usually keep it at 45-55
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post #51 of 61 Old 02-26-2013, 10:20 PM
RamblingCJ
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Quote:
Originally Posted by Jclilk
i got a quick question i got the 4.2 straight 6 and the T5 tranny 5 speed manual, how come when i shift into 5th theirs alot of noise but not when im in the other gears? my fastes speed is 65 but i usually keep it at 45-55
Are you hearing this when you're shifting only or while its in 5th? Either way, sounds like a rebuild may be in order; noise coming from the tranny is never good.
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post #52 of 61 Old 02-26-2013, 10:21 PM
74Maverick
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Quote:
Originally Posted by Jclilk View Post
i got a quick question i got the 4.2 straight 6 and the T5 tranny 5 speed manual, how come when i shift into 5th theirs alot of noise but not when im in the other gears? my fastes speed is 65 but i usually keep it at 45-55
5th gear is your overdrive, it is quite abit different then the other 4 gears in shape, style, and size. So it may sound different. Also in theory it is the most used/worn out gear out of the five. So it may be nearing the end if the sound is real nasty. t5s arent the strongest of transmissions in their most robust (late fox bodied mustang gt) they were only rated for 300ftlb. of torque.

The Last Great American Hero... the demi-god... to which speed means freedom of the soul.
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post #53 of 61 Old 02-26-2013, 10:55 PM
titomars
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I cruise mine between 65 and 70 MPH. I have had it up to a hair above 75 MPH. While it cruises fine at those speeds the real problem is stopping it safely. Because of the narrow track and short wheel base, hard braking from those speeds they tend to get a bit squirrel'y. well at least the pucker factor is there. Around town I drive my CJ like a sports car. Between the output of my 258, the Centerforce II, 4.10 gears and the locker. I have to be careful or my little CJ is burning rubber out of the intersections.

1981 Jeep CJ7 4.0 HO, AX-15, D300, D30, D44, SOA
1977 Chevrolet C/10 step side 454 TH400 3.73 posi
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post #54 of 61 Old 02-27-2013, 05:01 AM
chooster5000
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I cruise 55 in my jeep everywhere well on the main routes unless there bumpy then it's 45, she handles pretty good but at 60 to 65 it shacks some, I know my tires could use a balance. Other then that it's not bad I don't like going on the highway unless it's for a short distance.

1981 jeep cj-7 258 with t-176 4 speed and 31x10.5x15 tires,
1979 jeep cj-5 gone but not forgotten
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post #55 of 61 Old 02-27-2013, 05:47 AM
AFRd_CJ5
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Quote:
Originally Posted by Matt1981CJ7 View Post
I think you missed the point. What you built your Jeep for doesn't really matter.

What matters is what the OP wants, but since he has been MIA since he started this thread, that's a mystery.

Matt
I was merely answering their question and providing them with an example. Yes, you can go fast in a CJ. People do build them to do that.

'76 CJ5
434 pump gas SBC with an NX/HVH plate system
th350/Coan 5,000 converter/Dana 300 tcase
Dana 30 front with 4.56's/Dana 44 rear with 4.88's
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post #56 of 61 Old 02-27-2013, 08:38 AM
60scrambler
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Quote:
Originally Posted by 74Maverick View Post
t5s arent the strongest of transmissions in their most robust (late fox bodied mustang gt) they were only rated for 300ftlb. of torque.
Wooo, a CJ to put out 300ftlb. of torgue? Is it possible (for non racing)?

I actually got my T-5 up to 80 mph on the highway. On a Dino, I've seen it up to 105.
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post #57 of 61 Old 02-27-2013, 12:29 PM
74Maverick
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Quote:
Originally Posted by 60scrambler View Post
Wooo, a CJ to put out 300ftlb. of torgue? Is it possible (for non racing)?

I actually got my T-5 up to 80 mph on the highway. On a Dino, I've seen it up to 105.
My cj5 has a stock 360. Id guess it over or close to 300ftlb at the flywheel. I cant wait to put 4bbl/intake/cam in it. If I have the money I may have the heads milled and a valve job done. Should Be about 250 hp 350 tq. Thats plenty for me in a squirrely 4 wheel drum cj5.

By the way I forgot to answer the question. Before I balance the brake shoes and replaced the steering shaft bearings I could go maybe 40 without certain death. Since doing that and also putting on some stiff 2.5 bds springs with new bushings. I can hit 75 on the speedo(corrected to 80) before my right front tire feels like it starting to hop.

After I rebuild or replace the steering box and get new shocks and tires younger than 10 years old I think it should be smooth enough to bury the needle.

The Last Great American Hero... the demi-god... to which speed means freedom of the soul.
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post #58 of 61 Old 02-27-2013, 01:50 PM
Matt1981CJ7
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Quote:
Originally Posted by 60scrambler View Post
Wooo, a CJ to put out 300ftlb. of torgue? Is it possible (for non racing)?
It's quite possible with a 360, or similar engine...

Here's mine. I know of another member who claims to have over 400 ft-lbs, but we haven't seen his dyno sheet, yet. (cough...hutch...cough)

Matt
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post #59 of 61 Old 02-27-2013, 04:18 PM
AFRd_CJ5
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Mine put out a little over 300ft lbs. All I have is the old sheet though, it picked up a decent amount with the cam change. It's a nitrous motor though, so the numbers may seem low on the motor.
Attached Thumbnails
Dyno2.jpg  

'76 CJ5
434 pump gas SBC with an NX/HVH plate system
th350/Coan 5,000 converter/Dana 300 tcase
Dana 30 front with 4.56's/Dana 44 rear with 4.88's
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post #60 of 61 Old 02-27-2013, 05:55 PM
Cutlass327
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One other thought on the noisy 5th gear, you will hear a growling if you are lugging the engine by going to slow. Overdrive seems to be more prone to this.

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

http://www.jeepforum.com/forum/f8/ri...8-cj5-1223197/
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