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03-06-2020, 06:14 PM | #1 |
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Join Date: Oct 2019
Location: Monaca, PA Western PA
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71 C20 wunders all over.
My 71 C20 wunders all over the road. It also seems to turn sharper to the left, than right. I plan on digging into it Sunday, if weather cooperates. What do you all think the problem is? What should I check first? Thank you for all your help.
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1971 Chevrolet C20, Blueprint 355. Holly Street Avenger 430HP. Turbo 350 1952 Chevrolet Deluxe. Stock. True survivor with 1 paint job 1953 Buick Special. GM 355. Just a good smooth engine. |
03-06-2020, 07:27 PM | #2 |
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Location: Indianapolis
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Re: 71 C20 wunders all over.
I'd take it to a front end alignment shop and let them take a look at it, they will tell you what's wrong
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03-06-2020, 07:35 PM | #3 |
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Re: 71 C20 wunders all over.
Sounds steering related. Check your wheel bearings while you’re at it. Could be a worn steering box, pitman arm, idler arm, etc. check it all out. I’m doing a rebuild on a 71 front end right now and it’s pretty simple.
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03-07-2020, 03:04 PM | #4 |
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Re: 71 C20 wunders all over.
Yes do a rebuild, Moog parts are not expensive. I just did a complete for approximately 300.
Money well spent on a 50 year old truck. |
03-07-2020, 10:05 PM | #5 |
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Re: 71 C20 wunders all over.
All good advice.
Jack up the front of your truck so the front tires are just off the ground. While watching the steering components have someone move the steering wheel back and forth, to see where the play is coming from. What you’re describing sounds like a loose steering box. You do need to get it aligned, to eliminate that possibility. As was mentioned before, the alignment shop will probably tell you what your problem is. Mine used to wander A LOT until I finally took it to the Alignment Shop. Now it drives like a new truck. |
03-07-2020, 10:26 PM | #6 |
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Re: 71 C20 wunders all over.
Seomebody probably took the pitman arm off and didn"t get it in the right grove on steering box.Or somebody tried to rebuild the steering box and didn"t get the pitman shaft centerd with the steering gear inside the box. Jack up truck and steer all the way to one side count the rotations to the stop in oppisite direction. Divide by 2 and your wheels shuold be centered and your steering wheel
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 |
03-08-2020, 11:12 AM | #7 |
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Re: 71 C20 wunders all over.
Thank you all, I will be getting to it this afternoon. Once I complete the "honey do" list. Ive been trying to avoid it. LOL.
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1971 Chevrolet C20, Blueprint 355. Holly Street Avenger 430HP. Turbo 350 1952 Chevrolet Deluxe. Stock. True survivor with 1 paint job 1953 Buick Special. GM 355. Just a good smooth engine. |
03-08-2020, 12:09 PM | #8 |
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Location: Harrison, Arkansas
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Re: 71 C20 wunders all over.
I had this issue once. The steering box is not centered.
Take pitman arm off the box and center it up and button it up.
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other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless. |
03-08-2020, 02:23 PM | #9 |
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Re: 71 C20 wunders all over.
Wandering is usually due to Tow-Out Tow out is a condition where the front tires being pointed out, away from each other (left tire pointed left, right tire pointed right). It causes erratic steering, the vehicle tends to dart and follow ruts in the road, and be unpredictable.
Combine these characteristics with worn out parts and it can be extremely dangerous. I have no idea why it turns sharper one way than the other. |
03-08-2020, 03:26 PM | #10 |
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Location: cortland ohio
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Re: 71 C20 wunders all over.
Also would be good to remove horn button and verify that index mark on top of steering shaft is aligned with mark on steering wheel before making other adjustments.
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03-08-2020, 05:11 PM | #11 |
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Re: 71 C20 wunders all over.
I'm gonna go out on a limb here for verbal abuse ...but every pitman arm I have ever installed has a clocking spline or splines and you cannot install it except one engineered pre-determined position.
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03-08-2020, 07:44 PM | #12 |
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Location: cortland ohio
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Re: 71 C20 wunders all over.
There may be exceptions but all the ones(pitman arms) i have installed are splined so that they will only go on in one position also.
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03-08-2020, 09:14 PM | #13 |
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Re: 71 C20 wunders all over.
I think you are correct. After some thought mine was on a hot rod, not a truck. It would probably be best to ignore my input so far.
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other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless. |
03-09-2020, 06:15 PM | #14 |
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Join Date: Oct 2019
Location: Monaca, PA Western PA
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Re: 71 C20 wunders all over.
All input is greatly appreciated by me. I have learned so much from you guys.
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1971 Chevrolet C20, Blueprint 355. Holly Street Avenger 430HP. Turbo 350 1952 Chevrolet Deluxe. Stock. True survivor with 1 paint job 1953 Buick Special. GM 355. Just a good smooth engine. |
03-09-2020, 11:34 PM | #15 |
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Location: Wyoming USA
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Re: 71 C20 wunders all over.
I rebuilt my steering box in my 63 impala last week and it had 3 seperate spots the pitman arm could be clocked. Maybe these trucks were differant I cant remember I did mine sevreral beer I mean years ago.
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 |
03-11-2020, 01:33 AM | #16 |
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Location: Alcoa;Tn
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Re: 71 C20 wunders all over.
Have you had the drag link off? If so it might be installed backwards.That will make one wander real bad. Ask me how I know?HAHA!
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'71 Cheyenne Super LWB - Second Owner in 39 Years! '70 CST/10 SWB - Soon to be Daughter's truck when finished |
03-11-2020, 08:59 AM | #17 |
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Re: 71 C20 wunders all over.
I had he same issue last week, I ended up replacing my steering gear box and also the rag joint, everything is smooth now. The gear box was spendy but well worth it for how smooth everything is now. Good luck
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03-11-2020, 02:38 PM | #18 |
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Location: Colfax-California
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Re: 71 C20 wunders all over.
Correct, it can really go on one way unless you put it on 90 degrees out. The box itself can still be not centered when adjusting the centerlink and toe
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