Short Steering Arm Length - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
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post #1 of 13 (permalink) Old Jan 21st, 05, 11:48 AM Thread Starter
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Randy
 
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This question is specifically for David Pozzi. I finally acquired two sets of "short" steering arms. The one set have casting numbers 3954875 and 3954876 (true short arms for "special steering option"). The other set have casting numbers (the best I can tell) 3954873 and 3954874. The guy I bought these from told me they were off of a 1968 Z28. I am doubting this to be true now because they are longer than the first set and have a slightly different bend at the end where the tie rod connects. The first set I believe to be "the " short arms and they were supposedly off of a 1969 Z28. Let me know what you think about the second set of arms. Could these have been on a 1968 Z28 without power steering and special steering? My info also says "without 302" which means no Z28 option. I will probably go back on the guy and try to get my money back. Thanks in advance for your input.

1968 Deluxe Coupe Camaro
Original 327
1984 IROC 700R4 Transmission
12 Bolt 3:55 Posi
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post #2 of 13 (permalink) Old Jan 21st, 05, 06:58 PM
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Rando,
It's interesting that those arm numbers are just precceeding the 3954875 and 3954876 arms.

Here is what I found:
LH3954873 RH 3954874 - All except for PS and 302 1969
It sounds like either a medium or Long arm, not a short arm but is listed as a 69 arm only.

Can you confirm they are long or medium?

All arms angle inward pointing at the center of the differential. A longer arm would reach inward a bit more than a short arm.
David

Check my web page for First Gen Camaro suspension info: http://www.pozziracing.com
67 RS 327 original owner. 1965 Lola T-70
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post #3 of 13 (permalink) Old Jan 22nd, 05, 06:52 AM Thread Starter
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They appear to be a medium length. I found out that the guy I got them from obtained them with a disc brake setup supposedly from a '68 Z28. Now that I have confronted him with the numbers he isn't really sure what he bought but it appears to be '69 non-Z28. He said he would refund my purchase price less shipping. For those reading this post, the lesson here is KNOW what you are buying. Part numbers, casting numbers etc. are useful in determining EXACTLY what you have. If the numbers aren't there, you better really KNOW your parts and what they look like. Thanks David!

1968 Deluxe Coupe Camaro
Original 327
1984 IROC 700R4 Transmission
12 Bolt 3:55 Posi
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post #4 of 13 (permalink) Old Jan 22nd, 05, 09:29 AM
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Rando,
My steering arm list has come in very handy, and to think a while back, most people didn't even know there were different lengths of outer arms! [img]smile.gif[/img]

My thanks to the TC members who helped me with measurements and numbers.

Check my web page for First Gen Camaro suspension info: http://www.pozziracing.com
67 RS 327 original owner. 1965 Lola T-70
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post #5 of 13 (permalink) Old Jan 29th, 05, 02:51 AM Thread Starter
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Thanks for your help!

1968 Deluxe Coupe Camaro
Original 327
1984 IROC 700R4 Transmission
12 Bolt 3:55 Posi
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post #6 of 13 (permalink) Old Feb 8th, 05, 12:24 PM
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I got a set of short ones a couple of years ago for $65. I've been watching 2 sets on ebay; one matched and the other mismatched (but both short). Can you believe what these sold for?
ebay item # 4524350021 and 4524350740
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post #7 of 13 (permalink) Old Feb 8th, 05, 12:53 PM
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I'm keeping my short one's then!
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post #8 of 13 (permalink) Old Feb 8th, 05, 01:00 PM
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Something learned recently was be sure to use the matching length idler arm. David seem to know more about this than anyone I emailed..

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E
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post #9 of 13 (permalink) Old Feb 8th, 05, 01:16 PM
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I didn't change the idler arm but then I'm still using the short pitman arm. I'm thinking about getting the long one. Does that mean I will need the long idler at that time?
What was the effect of a mismatch?
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post #10 of 13 (permalink) Old Feb 8th, 05, 03:16 PM
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I have a long pitman and a long idler with p/s,, little sensitive. After talking to Dave about this,, he recommended I leave as is .. An option to slow this down some would be to get a Moog 6151 which is the 5.25 center to center , with the large shaft hole and that should slow things down .. You may cut some of your turning down some,, not sure,, I did not try it yet ... But I will look into adding more caster (think that the correct term) to lay control arms back some.. In any case I will tell front end man what is happening, he will know what to do . You can go just so far on this but you do see results..

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E
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post #11 of 13 (permalink) Old Feb 8th, 05, 04:56 PM
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I have some alignment specs from Guldstrand on my web page, there are some mild specs for street use.
With PS and stock upper control arms, I'd shoot for as much positive caster as you can get, -anything between 3 and 5 deg positive caster.
David

Check my web page for First Gen Camaro suspension info: http://www.pozziracing.com
67 RS 327 original owner. 1965 Lola T-70
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post #12 of 13 (permalink) Old Nov 30th, 14, 10:13 AM
 
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Unhappy Steering Arm Length

Guys, I am new in this field...

I want to use steering arms for my fsae supra car..what should be (approx) length of the arms???
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post #13 of 13 (permalink) Old Nov 30th, 14, 05:40 PM
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Re: Short Steering Arm Length

Around 5" to 5.5" is a good length I think. Any shorter and you will have problems with stability. Any small play or flex in the joints would be seen in wheel movement with a shorter arm. If you were running a 13" wheel it could be shorter than on an 18" wheel.

Check my web page for First Gen Camaro suspension info: http://www.pozziracing.com
67 RS 327 original owner. 1965 Lola T-70
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