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Unread 02-05-2013, 04:24 AM   #1
yellowbeast123
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Any clue # ?

Hi , And thanks in advance. Recently bought this 89 wrangler. 6 automatic. I'm trying to see if motor is orig. Number on side of block by dist. is 61709. Thats all thats there. Anyone have a thought on what this number is ?

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Unread 02-05-2013, 06:28 AM   #2
Mark05059
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Originally Posted by yellowbeast123 View Post
Hi , And thanks in advance. Recently bought this 89 wrangler. 6 automatic. I'm trying to see if motor is orig. Number on side of block by dist. is 61709. Thats all thats there. Anyone have a thought on what this number is ?
I think your looking for numbers further down on the block. They will be cast and not stamped...
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Unread 02-05-2013, 07:22 AM   #3
Que89YJ
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Unread 02-05-2013, 10:53 AM   #4
giggityjeeper
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is it carbed....????? then its a 4.2 prolly original, most would not swap another 4.2 if it went.....

FI then its a 4.0 not original didnt come about till 91 I beleive
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Unread 02-05-2013, 01:27 PM   #5
dillonjm
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Originally Posted by giggityjeeper View Post
is it carbed....????? then its a 4.2 prolly original, most would not swap another 4.2 if it went.....

FI then its a 4.0 not original didnt come about till 91 I beleive
Yep, 91 in the YJs.

But they could have swapped in FI into an older 4.2 as well, not indicative of engine really.
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