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70 383 335 hp orange engine

ceedog

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Anyone have a picture looking down into the carb (Holley) on these engines? If I remember right the primary Ventura’s are like the 1850 series and the back is like the double pumpers.
 

72RoadRunnerGTX

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1970 4160.jpg


1970 carb specs.jpg
 
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72RoadRunnerGTX

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This is a 6515, same bore/venturi specs as the '70-72 HP carbs.
20200324_191718.jpg

20200324_191951.jpg


FYI, list number 6515 is a factory replacement designed as a bolt-on replacement for all these OE 1 ¾” secondary bore 4160s from ’70 thru ‘72. Includes all possible features of the original list numbers, with some later improvements like an o-ringed transfer tube for the accelerator pump passage, metering block to main body and the later more conventional idle circuit design.

BTW, If you are looking for a CFM rating for these carbs, you won’t find a accurate published number anywhere. The commonly published number is 600cfm, even documents from Holley from back then use this number. These carbs are more like 725cfm if you do the dimensional math using data points from current Holley spec sheets.
 
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ceedog

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Can someone tell me if the secondary boosters are the downward type since I can’t get a pic to come up
 

ceedog

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Thanks everyone, for some reason years ago I had removed those boosters, one of my smart moves from way back in the day, the list # is for a 70 so I’ll remove 2 from a junk carb to get it built back right for future use.
 
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