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Holley Carb Help, Documents.holley.com

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Old Sep 14, 2018 | 08:16 PM
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Default Holley Carb Help, Documents.holley.com

through reeaerch on this forum, I've discovered (I hope) that the correct Holley carb for a 66 AIR 327, 300 hp is a list 3605.

in reviewing the Documents.Holley.com, attached, I see that a number of other list numbers are shown on the same row and am wondering for example are the 3620 and 3606 the same exact carbs, but perhaps were identified by Holley for different car makes?

ive been looking for a 3605 with the large pcv connection but they are few and far between and are either very incomplete or very very expensive. Hoping to find a good replacement considering my budget.

thanks to all who reply

Last edited by Nalrops; Sep 14, 2018 at 08:19 PM. Reason: No attachment
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Old Sep 14, 2018 | 08:21 PM
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Originally Posted by Nalrops
through reeaerch on this forum, I've discovered (I hope) that the correct Holley carb for a 66 AIR 327, 300 hp is a list 3605.

in reviewing the Documents.Holley.com, attached, I see that a number of other list numbers are shown on the same row and am wondering for example are the 3620 and 3606 the same exact carbs, but perhaps were identified by Holley for different car makes?

ive been looking for a 3605 with the large pcv connection but they are few and far between and are either very incomplete or very very expensive. Hoping to find a good replacement considering my budget.

thanks to all who reply

Sorry for some reason the attachment isn't posting.
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Old Sep 14, 2018 | 08:24 PM
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Originally Posted by Nalrops


Sorry for some reason the attachment isn't posting.
here we go. Thanks,


Documents.holley.com
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Old Sep 14, 2018 | 08:36 PM
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as you found out the 4160 is a widely used carb. but what makes each one different is the base plate, metering blocks, bowels, and other small adjustment parts.
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Old Sep 15, 2018 | 11:56 AM
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Originally Posted by Nowhere Man
as you found out the 4160 is a widely used carb. but what makes each one different is the base plate, metering blocks, bowels, and other small adjustment parts.
thanks Nowhere. I'm trying to determine what the differences are between a 3605 and a 3606? Was thinking because they're on the same row in the Holley document they could be the same; maybe just different part numbers for chevy vs ford, etc.

thanks,
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Old Sep 15, 2018 | 12:02 PM
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Originally Posted by Nalrops


thanks Nowhere. I'm trying to determine what the differences are between a 3605 and a 3606? Was thinking because they're on the same row in the Holley document they could be the same; maybe just different part numbers for chevy vs ford, etc.

thanks,
Different list numbers would indicate differences in jetting and several calibrations and configurations. The 3605 may look the same as other similar designs but will have different applications.
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Old Sep 15, 2018 | 01:06 PM
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Nalrops -
The Holley doc you posted has nothing to do with configuration of a 4160 series carburetor(s) -- rather, it is only a presentation of adjustment/settings for how deep to set the floats, what is the ideal cam position, etc. A particular "List #" is application-specific, and is a way of identifying unique model number, primary & secondary metering body numbers, jetting, power valve, shooters, base plate, etc, etc.

You are correct that '66 base engine (or L79) w/K19 A.I.R. is List 3605. However, it is '66 427/L36 engine that would employ a List 3606 carb. 3605 and 3606 would have different configurations, different metering bodies, different jets, etc; they are NOT the "same" even though they may share the same float depth, choke index, choke qualify, etc, adjustment specs.

Perhaps you are trying to assemble a factory correct K19 A.I.R. system for your car from scratch? Or, maybe you already have pump, hoses, valves, pulleys, exhaust manifolds, tubes, brackets, braces, air cleaner, and the like, and a 3605 is your last piece? Either way, these carbs are a very rare find correctly dated, or even service dated. To expand your search, you could consider List 3814 which is '67 model year, base or L79 engine & would be functionally more consistent with your engine than a List 3606 big-block A.I.R. carb. GM made a few more '67 Corvette's with K19, so a service-dated 3814 could be a more affordable alternative. Anyway, more information on your car's engine -- particularly the amount of real K19 components remaining -- would be of help. This stuff is truly big $$.

Cheers,
Jeff
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Old Sep 15, 2018 | 03:16 PM
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Originally Posted by vark_wso
Nalrops -
The Holley doc you posted has nothing to do with configuration of a 4160 series carburetor(s) -- rather, it is only a presentation of adjustment/settings for how deep to set the floats, what is the ideal cam position, etc. A particular "List #" is application-specific, and is a way of identifying unique model number, primary & secondary metering body numbers, jetting, power valve, shooters, base plate, etc, etc.

You are correct that '66 base engine (or L79) w/K19 A.I.R. is List 3605. However, it is '66 427/L36 engine that would employ a List 3606 carb. 3605 and 3606 would have different configurations, different metering bodies, different jets, etc; they are NOT the "same" even though they may share the same float depth, choke index, choke qualify, etc, adjustment specs.

Perhaps you are trying to assemble a factory correct K19 A.I.R. system for your car from scratch? Or, maybe you already have pump, hoses, valves, pulleys, exhaust manifolds, tubes, brackets, braces, air cleaner, and the like, and a 3605 is your last piece? Either way, these carbs are a very rare find correctly dated, or even service dated. To expand your search, you could consider List 3814 which is '67 model year, base or L79 engine & would be functionally more consistent with your engine than a List 3606 big-block A.I.R. carb. GM made a few more '67 Corvette's with K19, so a service-dated 3814 could be a more affordable alternative. Anyway, more information on your car's engine -- particularly the amount of real K19 components remaining -- would be of help. This stuff is truly big $$.

Cheers,
Jeff
"Perhaps you are trying to assemble a factory correct K19 A.I.R. system for your car from scratch? Or, maybe you already have pump, hoses, valves, pulleys, exhaust manifolds, tubes, brackets, braces, air cleaner, and the like, and a 3605 is your last piece?"

Jeff thank you for your detailed response. I was considering a 3606 and you've saved me from what could have been a problem and disappointment.

Yes, trying to complete my AIR system. I've got most of the system as you can see in the photo below. Only missing the 3605 carb and the diverter bracket. Air cleaner base, pump, etc are all there.

Im the second owner. Had her since June 1984 and trying to slowly put it back in shape as correct as I can.

i've found a couple of 3605's on eBay, but they're very very pricey like $1200. Not sure I want it that correct?

thanks again for your help and if you run across any reasonably priced 3605's, sent me a message.

thanks again,


AIR Components
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Old Aug 14, 2021 | 02:16 PM
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Hello i realize this is an old thread but if anyone still needs/wants Holley list 3606 GM3892341-EA i do have a main body and primary metering block and possibly the correct bowls i do not have the base plate or any of the choke parts or misc but the main body and primary block are in good condition and are from the same carb .i also have to check my parts but could have the orig secondary metering plate. i know a lot of people are asking high prices for these but i will price it like normal used carb parts if you or any other members here are interested $150 will get the matching body and metering block and if the bowls and rear plate are correct you can have them all for $200+shipping


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