Dave64SS
Frequent Contributor
Posts: 1673
Loc: Cypress, TX
Reg: 02-28-09
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10-25-14 03:52 PM - Post#2493579
asking this and it may have often been asked. on a 64 impala, are two speed wiper arms different than the single speed. I swear I've read they are but what to confirm. thanks.
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junky
Valued Contributor
Posts: 4103
Loc: Northeast CT
Reg: 06-27-10
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10-26-14 09:57 AM - Post#2493737
In response to Dave64SS
I have seen this reference in the GM parts book, however, I have yet to learn what the difference is. Unfortunately, you would have to have one of each, to know exactly what the difference is.
Never argue with an idiot. He'll drag you down to his level, then beat you with experience.
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 pvs409
"12th Year" Gold Supporting Member
Posts: 3824
Loc: Sergeant Bluff, Iowa
Reg: 01-10-05
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10-26-14 11:04 AM - Post#2493755
In response to junky
2 speed wiper arms are longer than 1 speed. They are normally marked on the back side
RH1SPD/LH1SPD or RH2SPD/LH2SPD.
I am taking some pictures of the two in the next few days that I can post.
Paul
57 BelairHT 283/270hp 4 spd
62 ImpHT 327/300 4 spd
62 Imp CV SS 327/300HP 700R4 (sold)
62 Imp HT SS 409/482 stroker 4 spd
62 Imp SS 409 - 5 spd Convertible
https://paulstensland.com
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Cdn63guy
Contributor
Posts: 135
Loc: Coquitlam, B.C.
Reg: 03-25-11
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10-26-14 05:32 PM - Post#2493845
In response to Dave64SS
In the May 1999 issue of the Late Great Chevy magazine an article by Denny Williams has pictures and text on wiper arms from 1958-1964.
The article lists the single speed '63-'64 arms are 13.1/2" and the two speed are 14 5/8" measured from the rivet (at the chrome knob) to the tip of the arm.
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Dave64SS
Frequent Contributor
Posts: 1673
Loc: Cypress, TX
Reg: 02-28-09
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10-26-14 05:33 PM - Post#2493846
In response to Cdn63guy
great answers. thanks so much guys.....
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doubleE
Valued Contributor
Posts: 3934
Loc: Eagan MN
Reg: 06-02-03
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10-29-14 07:49 AM - Post#2494500
In response to Dave64SS
This issue has always bugged me. What possible reason was there for Chevrolet to design 2 different sets of wiper arms for the same windshield that had the same dimensions? Makes no sense or cents. I thought maybe the wiper shafts might be located in different locations. But my car (62) had single speed wipers on it when I bought it (though not stock). I installed a 2 speed wiper motor using the same linkage and had no issues.
I have always been confused by this.
Eric
| Proud owner of
My Blue 62
Impala SS |
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models916
Valued Contributor
Posts: 4785
Age: 73
Loc: Addison, IL
Reg: 05-28-10
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10-30-14 05:13 AM - Post#2494721
In response to doubleE
Just guessing here. 2 speed has more power and can swing a longer arm.
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del.impala
Contributor
Posts: 663
Loc: delaware
Reg: 04-13-11
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10-30-14 12:10 PM - Post#2494795
In response to doubleE
I will try to get to the garage and check out the difference but I believe the answer is the passenger arm (2speed) has a different angle of bend from straight at tip.
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