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mrhite65
 Post subject: Jet Swap
PostPosted: Tue Nov 06, 2007 7:23 pm 
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Can you change the jet in a Holley 1945 into a Holley 1920?

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SlantSixDan
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PostPosted: Tue Nov 06, 2007 9:27 pm 
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Yes.

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mrhite65
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PostPosted: Tue Nov 06, 2007 10:55 pm 
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Thank you!

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mrhite65
 Post subject:
PostPosted: Tue Nov 06, 2007 10:55 pm 
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DusterIdiot
 Post subject: Holley jetting...
PostPosted: Wed Nov 07, 2007 6:47 am 
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Can you change the jet in a Holley 1945 into a Holley 1920?
Yes, the jets are the same (and they are the same as the over the counter versions for the 2 or 4 barrels...)

Careful on what you swap as not all 1 barrels were jetted the same...

Roughly...all the Holley 1920's were jetted in the late 60's with anything from 54's to 56's....The Holley 1945 was jetted with 58 in 1974 (which is pretty lean for the carb), then went to 61's (612 close jet for emisions), after that...

Pretty much down the line #58 is about as rich as the Holley 1920 will want and #61 is about as rich as the Holley 1945 wants...

FYI,

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mrhite65
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PostPosted: Wed Nov 07, 2007 9:19 am 
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The jet will be coming from a 1980 truck Holley 1945 to a Holley 1920.

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