#68720 - 02/22/12 10:23 PM
Chev 250 intake & fuel injection ?
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'64 Nova
Active BB Member
Registered: 02/16/12
Posts: 21
Loc: Kamloops BC Canada
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Would anybody know of a good used stock GM 2bbl intake manifold? Or even have a picture of one? I tried to find any sort of picture or video of the chev 250's in South America, and I seen some 2 bbl intake manifolds; wich might have been gm but not sure. Could not find anything factory fuel injected. Any info on this would be awsesome.
If I was to find a good Gm 2bbl intake how much would it be worth?
Is the the automotive 2bbl intake the same as what is used in marine?
How much would a gm 292 exhaust manifold be worth?
For a stock build 250 (9.3-9.4 comp-ratio & pg trans in a 64 nova)should a 292 ex-man be used, the cast iron headers, or stock manifold?.
Thanks for any help/info, Jason
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#68730 - 02/24/12 03:39 PM
Re: Chev 250 intake & fuel injection ?
[Re: '64 Nova]
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Winter
Active BB Member
Registered: 08/27/06
Posts: 206
Loc: North Carolina
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GM did not produce a two barrel manifold for the automotive 250 in the United States.
Brazil 2 Barrel Manifold, Solex H34, Alcohol
http://produto.mercadolivre.com.br/MLB-2...a-weber-446-_JM
http://produto.mercadolivre.com.br/MLB-2...o-solex-h34-_JM
Brazil 2 Barrel Manifold, Weber DFV446, Gasoline
http://produto.mercadolivre.com.br/MLB-212891415-coletor-admisso-opala-caravam-6-cc-_JM
http://produto.mercadolivre.com.br/MLB-216806636-coletor-admisso-3e-446-weber-usado-opala-_JM
Argentina 2 Barrel Manifold
http://articulo.mercadolibre.com.ar/MLA-...chevy-coupe-_JM
As the six cylinder engine is tilled down in the rear when mounted in the car/truck, the front/mid/rear intake ports are at different elevations. The different manifolds deal with this differently.
1)The GM USA OEM stock manifold, 2)the Offenhauser manifold, and 3 & 4)the two Brazilian manifolds have level main runners (manifold runners that are parallel with the engine centerline), and slope the front/mid/rear port runners at different angles. While the OEM and the Offenhauser manifold have the main runners at the mid port level, the Brazilian manifold main runners are slightly higher at the front port level.
The GM USA OEM stock manifold has the plenum bottom at a low point, assuming to prevent liquid gasoline from just running to a particular cylinder.
The approach angle of the rear port runner to the cylinder head is fairly steep on the Brazilian manifolds.
The 5) Argentine and 6) Clifford manifolds have main runners that slope with the engine. The carburetor base is level though. I would be concerned with liquid gasoline overwhelming the rear cylinders. As you can see from the links, the runner volume for the Argentine manifold is less than for the Clifford manifold.
A Brazilian two piece cast iron manifold (1 3/4" I.D.), from a 1995-98 fuel injection 250 engine (looks better right-side-up)
http://produto.mercadolivre.com.br/MLB-221975263-coletor-de-escape-omega-41-9498-_JM
The runners on the carburetor intake manifolds must be lengthen to fit with the Brazilian two piece cast iron manifold.
Edited by Winter (02/24/12 03:43 PM)
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#68736 - 02/25/12 05:39 AM
Re: Chev 250 intake & fuel injection ?
[Re: RedMan*]
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Winter
Active BB Member
Registered: 08/27/06
Posts: 206
Loc: North Carolina
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These are my observations so view them as being informative and not facts:
1) Concerning the Chevrolet 250 engines and South America, countries north and west of Brazil tended to offer 250 engines similar to those in the USA.
2) Brazil and Argentina were more independent concerning Chevrolet 250 engine development. OEM two barrel manifolds were commonly installed.
Over the years I have acquired: 1)Argentine two barrel intake manifold 2) Brazilian two barrel intake manifold (alcohol version) 3) Brazilian two piece cast iron exhaust
The acquisition process have not been consistent. I have ordered all while in the USA. Some attempts have been smooth and quick, some have fallen through, some parts have been slightly different than pictured and stated (alcohol versus gas intake manifold), some have taken months. Some shipments have arrived in a week, some have taken 4 weeks.
You can search using the following sites:
Google Brazil, Google Argentina, Google Peru
Mercado Livre Brazil, Mercado Libre Argentina, Mercado Livre Peru
Some foreign words to use searching:
Intake manifold: admissao coletor (Brazil) or colector (Argentina)
Cylinder: cilindros
6 Cylinder abbreviation: 6 CC
Engine: Motores
Brazilian Cars using the Chevrolet 250: Opala, Caravan
Argentine Cars using the Chevrolet 250: Chevrolet 400, Opala
There is an Argentina road racing series that uses 6 cylinder engines, the Turismo 4000 Argentino
http://www.youtube.com/watch?v=1bo62j9S1TU
This Argentine site has a Chevrolet 250 OEM style aluminum cylinder head:
http://www.crparts.com.ar/verart.php?id=542
Edited by Winter (02/26/12 07:18 AM)
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#68741 - 02/25/12 04:08 PM
Re: Chev 250 intake & fuel injection ?
[Re: Winter]
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'64 Nova
Active BB Member
Registered: 02/16/12
Posts: 21
Loc: Kamloops BC Canada
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@ Winter, Thanks for the info. I obviously need to learn spanish. I was very glad to see the links to the adds you sent.
If you didn't see my other posts, I am hoping to find some of these parts in Guatamala. My foreman (Howard) at work has been going every year for a while now. Howard is willing to dig @ the local wrecking yard. I am just not sure what chevy engines were used there. Any Ideas?
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#68756 - 02/26/12 05:47 PM
Re: Chev 250 intake & fuel injection ?
[Re: Winter]
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'64 Nova
Active BB Member
Registered: 02/16/12
Posts: 21
Loc: Kamloops BC Canada
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Wasn't the 250 made in Mexico till 1988?. I hope there is a good selection. I had a thought this morning, That it might be possible to fit a small 2bbl on the stock 250 manifold. (withsome machineing and welding) Anybody heard of this?
Jason
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