is a 73 258 6 cyl the same as an 82? - JeepForum.com

 
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post #1 of 7 Old 11-26-2013, 05:33 PM Thread Starter
COBRA5LADDICT
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is a 73 258 6 cyl the same as an 82?

other than being 1 bbl and not 2 bbl.

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post #2 of 7 Old 11-26-2013, 05:53 PM
WindKnot
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Substantially, yes. Exactly? No.

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post #3 of 7 Old 11-26-2013, 06:03 PM
hp_lovecraft
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There was a major redesign in 1980, mainly to reduce weight. Lighter block, heads, manifolds, etc.

The engines look identical, but lots of little things don't fit. Typically, people don't even realize that they have a swapped engine until they buy some parts (ie valve cover gasket, water pump, etc), and they don't fit like the should.
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post #4 of 7 Old 11-26-2013, 06:13 PM
atopi3
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the head on the 73 has a week spot that cracks but by 80 that has been fixed

Alan Haney
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post #5 of 7 Old 11-26-2013, 09:47 PM
CSP
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Head bolt sizes are different. For 81-84 they are 7/16" and all other years are 1/2".
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post #6 of 7 Old 11-27-2013, 11:44 AM Thread Starter
COBRA5LADDICT
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could i use the intake and exhaust manifold from my 81+ on the earlier 258? also i am mainly concerned with mounting points for alternator, power steering pump air pump etc.
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post #7 of 7 Old 11-27-2013, 01:30 PM
CSP
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Yes you can. My '75 has the later intake/exhaust manifolds.

The '73 block may or may not have the mounting bosses for the power steering pump brackets.
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