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Unread 11-17-2005, 08:51 PM   #1
petey156
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1977 CJ5 
 
Join Date: Sep 2005
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258 intakes

Are all years of 258 intakes and exhaust manifolds the same? did they offer the 258 in any other vehicles?
what years are the same?
thanks u'all
Preston

I have a 77 , if it matters.

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Unread 11-18-2005, 04:59 AM   #2
John Strenk
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1976 CJ5 
 
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Location: Shalersville Ohio
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From what I've seen there is one type of 1 bbl manifold and 2 types of 2 bbl manifold. One 2 bbl manifold bots to the intake for a heat riser and the other 2 bbl manifold is seperate from the exhaust and is water heated.

I think the last design is the best af as stock manifolds go.

Now there is a dizzing array of aftermarket available from 1 to 3 carbs to MPI.
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Unread 11-18-2005, 09:55 AM   #3
jadams68
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1984 CJ7 
 
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Location: Downingtown, PA
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The '85 and '86 intakes have a slightly different casting which works better with aftermarket headers. I of course used an '84 and had to grind it...DRAT!
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Unread 11-19-2005, 10:44 PM   #4
petey156
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so if i use the intake and exhaust from an 85, will it fit on my 1977 258 I6?
thanks for the HELP!
Preston
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Unread 11-20-2005, 09:36 PM   #5
medunwoody
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1985 CJ7 
 
Join Date: Nov 2005
Location: Columbia MO
Posts: 51
Does intake manifold for 2 barrel carb only have one retangular opening?

I've got an engine that I'm having trouble getting to run which came with a basket of mismatched parts for a carb. I can't determine what year the engine is or even if it should have a single or two barrel carb. I believe it is a 258 engine. I can't find any engine code markings that correspond to the manual I have. If the local Auto parts store only has a choice of a single barrel or a double does this mean one or the other should work? My manifold opening is about 1 1/2 by 4 inches and I assume it is a 2 barrel but ?
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Unread 11-21-2005, 03:38 AM   #6
John Strenk
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the one barrel has one hole and the 2 barrel has two holes. Maybe someone machined out the spacer between the holes for mor flow. the two barrel has 4 bolts the 1 barrel has two bolts.

Yes either one will work, but the 2 bbl will have more options for different carburators swaps.
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