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Username Post: '57 Original FI Cars        (Topic#153896)
55Nomad57 
Member
Posts: 58

Loc: near KC, Missouri
Reg: 10-28-06
03-11-07 11:13 AM - Post#1116860    

Anyone out there with a '57 with original Fuel Injection? There is so little published info available concerning these cars, someone willing to take detailed pictures and share them would be appreciated. I have some pictures of a convertible and a Nomad with FI if anyone would like to see them. I will email if you send me your address.


 
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1957 FI Nomad 
Senior Member
Posts: 174

Loc: California
Reg: 01-19-03
03-11-07 11:57 AM - Post#1116883    
    In response to 55Nomad57

There`s been a lot written about the various FI units and distributors that were factory installed on both Corvettes and passenger cars. There has been virtually nothing written about the ElectroVac. This device was used on passenger cars to provide supplemental vacuum for the windshield wipers. As best I can determine, FI passenger cars were not equipped with electric wipers because of clearance issues with the distributor assembly, although it is not uncommon to see restored cars with the electric wiper motor. FI passenger cars were equipped with a special Trico vacuum wiper motor (CPM 13-5). This wiper motor was fitted with a mechanically actuated switch which provided power to the ElectroVac when the wiper motor was engaged.
I have the correct parts, drawings, etc. and am planning to prepare an article showing and describing the correct ElectroVac (factory and service part configurations), CPM 13-5 wiper motor along with the ElectroVac switch and correct ElectroVac instruction tag along with the correct identification decal.
The article is one of those projects that will get done as time permits.

 
55Nomad57 
Member
Posts: 58

Loc: near KC, Missouri
Reg: 10-28-06
03-11-07 01:06 PM - Post#1116921    
    In response to 1957 FI Nomad

I assumed that if the car was not ordered with electric wipers, but with the FI option, then the electrovac was installed to run the wipers so that the FI unit would have full engine vacuum signal. I thought all Vettes had the electric wipers, so vacuum was not a problem. I also was assuming that the electrovac was used on the 283 HP option because of the lack of vacuum signal when using vacuum wipers. Again, these are my assumptions since I have not been able to confirm very much about these cars. I have pictures of two cars with the 250 HP option and both have electric wipers and there does not appear to be a clearance problem with the distributor cap & wiper assembly. Looks a little tight, but not unmanageable. I will email you the pictures I have.


 
55Nomad57 
Member
Posts: 58

Loc: near KC, Missouri
Reg: 10-28-06
03-11-07 01:14 PM - Post#1116924    
    In response to 55Nomad57

1957 FI Nomad,

Your email address is not in your profile. Email me and I will send you some pictures.

Ed

 
1957 FI Nomad 
Senior Member
Posts: 174

Loc: California
Reg: 01-19-03
03-11-07 03:04 PM - Post#1116959    
    In response to 55Nomad57

You are correct in that all Corvettes were equipped with electric wipers.
All of the original passenger cars which I have examined were equipped with the ElectroVac. This includes both the 250HP & 283HP engines. None of the factory orders and invoices for FI passenger cars which I have list the optional electric wipers. This is not to say that at sometime dealerships did not upgrade the vehicle with an electric wiper in lieu of replacing a faulty ElectroVac.

Edited by 1957 FI Nomad on 03-11-07 03:09 PM. Reason for edit: No reason given.

 
1957 FI Nomad 
Senior Member
Posts: 174

Loc: California
Reg: 01-19-03
03-11-07 03:11 PM - Post#1116962    
    In response to 1957 FI Nomad

I have revised my profile to include my EMail address.

 
CJS57 
Frequent Contributor
Posts: 2462
CJS57
Age: 68
Loc: New Milford , Connecticut
Reg: 01-18-05
03-11-07 04:03 PM - Post#1116987    
    In response to 55Nomad57

Could you post the pictures so everyone can see them?
1957 Belair 2Dr Hdtp, 58,000 original miles, original never rebuilt 283 engine, 245hp, Dual Fours, Tremec TKO 600 5-speed, 3.70 gears, AACA Senior in 1985
previous trifives:
1955 Belair Convt
1956 210 2dr Sdn
1957 Belair 2Dr Hdtp


 
mlc48 
Forum Newbie
Posts: 37

Loc: Connecticut
Reg: 08-27-03
03-11-07 04:20 PM - Post#1116995    
    In response to CJS57

I would also like to see the pictures posted
MLC48

57 Chevy Bel Air convertible FI Adobe Biege
69 Z28 Camaro
68 corvette original L89 blk on blk


 
57_sedan_delivery 
Old as Dirt Member
Posts: 6720

Loc: Hog Valley, Fla.
Reg: 02-19-01
03-11-07 07:29 PM - Post#1117159    
    In response to 55Nomad57

  • 55Nomad57 Said:
I have pictures of two cars with the 250 HP option and both have electric wipers and there does not appear to be a clearance problem with the distributor cap & wiper assembly. Looks a little tight, but not unmanageable.



While it was not a factory installation I had a '64 FI unit on my '57 sedan back in the early 70's with the electric wiper motor and it was a fug snit to say the least. I had to remove the wiper motor to remove the distributor cap enough to put in a set of points and with the large air plenum it was very hard to see what was going on back there, the smaller factory '57 FI unit would be easier in this respect but still tight.
Mike W.

Founding father Desert Classic Chevys in Phoenix, Az.

1957 sedan delivery 454 TH400
1956 windowed sedan delivery US Dept of Ag car
1956 Chevy 3100 US Navy pickup
1959 rare GMC 100 fleet option 100 pickup


 
55Nomad57 
Member
Posts: 58

Loc: near KC, Missouri
Reg: 10-28-06
03-15-07 07:07 PM - Post#1120798    
    In response to 57_sedan_delivery

mic 48,

Did you get any of the pictures I emailed? I got a message failute on one of the messages. Probably because of being too big with the pictures attached Many of them are of a convertible I saw in a showroom near St Louis. Some of your other posts indicate you are building a FI convertible. Car may still be on their website: www.fastlanecars.com Asking about $127K

 
mlc48 
Forum Newbie
Posts: 37

Loc: Connecticut
Reg: 08-27-03
03-16-07 01:13 PM - Post#1121250    
    In response to 55Nomad57

55Nomad57
No I did not get your email. I saw the website. It looks like this car is using a 905 distributor. I thought all automatics used 906 with the vacuum advance. As for the wipers electric looks like it will work but since I have an electrovac I might as well use it . The electrovac setup is more unique
Mike
MLC48

57 Chevy Bel Air convertible FI Adobe Biege
69 Z28 Camaro
68 corvette original L89 blk on blk


 
55Nomad57 
Member
Posts: 58

Loc: near KC, Missouri
Reg: 10-28-06
03-16-07 06:11 PM - Post#1121470    
    In response to mlc48

mic48,

Is the email address in your profile correct? Send me an email and I will send you the pictures I have: '57 Vette, '57 Convertible, '57 Nomad & other miscellaneous. The literature I have says "early production" 250 & 283 HP used #889. After Jan,1957 #905 was used. "Late production" 250 HP FI with Powerglide used #906 (single points). "Late Production" 283 HP used #908. Do not know what or when "late-production" means. "Early" cars supposedly had Corvette aluminum valve covers and Corvette air cleaners, whereas later had metal covers and the air cleaner with the inlet hose. But I have seen GM pictures showing the Vette air cleaner and metal valve covers. There is a lot of documentation for the FI Vettes, but very little on the passenger cars.

 
DZAUTO 
Senior Member
Posts: 7571

Loc: Mustang, OK, USA
Reg: 12-25-99
03-16-07 09:48 PM - Post#1121591    
    In response to 55Nomad57

Some of those pictures with a Vette air cleaner and stamped steel covers were (I believe) pre-production pictures or engineering/promotion pictures and were NOT pictures of actual production engines. ALLLLLLLLLLLLLLLLLLLLL Vettes with optional engines got the finned alum valve covers (on Vettes, only the base 4bl engines got stamped steel valve covers).
BUT, on pass cars, ALL engines (base or optional) only got the stamped steel covers. The finned alum covers were Corvette specific because they said Corvette across the cover, whereas the stamped steel covers said Chevrolet, thus, they were applicable for both pass cars and Vettes. Of course, back in the day ALLLLL the guys with Chevys replaced the steel covers with finned alum covers and tossed the steel covers (that may be why staggered bolt pattern steel covers are rather scarce). Not only did stamped steel covers get tossed, but other "ugly" things such as Bat Wings and black oil bath 4bl cleaners also got tossed in favor of more "aestheticly pleasing" aftermarket chrome, open element air cleaners. I can't count how many of my buddies tossed ugly, messy 55-57 oil bath cleaners! --------------------oh well
Tom Parsons


 
Eric Vrem 
Senior Member
Posts: 278

Loc: Fallbrook, CA
Reg: 07-01-04
03-24-07 07:59 PM - Post#1127581    
    In response to 1957 FI Nomad

I ran a 7014800 FI unit with a 906 distributor on my '57 Nomad with the original electric wiper motor. The car was not originally equipped with FI. The distributor cleared the wiper motor adequately for normal operation, but I had to remove the wiper motor to remove the distributor cap (or remove the distributor). My current installation (same FI unit) with the correct vacuum wiper motor does not have this problem. It is hard for me to believe that Chevrolet would mandate the vacuum wiper motor on FI-equipped cars just to alleviate a distributor service issue but that seems to be the only explanation. Keep in mind that vacuum wipers were standard equipment on any '57 Chevrolet (without Electrovac). My thinking is that Chevrolet engineers added the Electrovac to FI-equipped cars because they were considered high performance engines which typically have lower intake manifold vacuum. This, of course is not true of the 250hp 283 but may be true of the 283hp version.

Eric V.

 
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