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Discussion Starter #1
I just won an Ebay auction for a TB off a 2012 6.4L Hemi. Is there a difference between my 5.7 TB and the 6.4 TB?

I was wondering before I send it our to get ported. I was hoping it was bigger for the 6.4L.

$20 well spent either way

Dave
 

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Which castings do you have?

The "801" and "847"?

https://www.thefastman.com/throttlebodiesHemi.php

In 2005 the Hemi TB's electrical connector end was changed to a slotted connector and a new casting was also introduced.
The 2005 to 2012 part numbers are the "801" Hemi TB and "847" Hemi TB.
The "805" and "801" are identical except for the electrical connector. The "847" is a different casting and uses the slotted connecter.
The 5.7l and 6.1L are 80mm it appears.
 

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Discussion Starter #3
Too funny you found that quote from Fastman! I was going to email him to get the TB ported.

I cannot see the part number to check which one, but it was made 28APR2011 and the connector is identicle to mine (from a picture on ebay).

He has alot of information but nothing on actual throttle bore sizes beyond what he can open something to. I figure the 6.4 has a larger air need than my 5.7 and hoped it was bigger to begin with, thus saving me some machine time.

Dave
 
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