[JamesRS]

Does anyone know the difference between a holley 4781 and an 8162? I know they are both 850 DP, but what other differences are there?

 

[Gary Anderson]

The 8162 is what Holley called a Competition carb. It has no choke, 4 corner idle and drilled throttle plates for more idle airflow.(bigger cams)
The 4781 is the standard 850 double pumper with primary idle mixture screws, mechanical choke, etc.

 

[JamesRS]

Thank you Gary, I used to have a 4781 that worked fine on my Nova, but now I have a friend that wants to sell me a 8162 for my Chevelle and neither of us knew the difference between the two carbs.

 

[70-SS454]

Here you go....Google works wonders.....USE IT!

http://www.holley.com/data/TechService/Technical/Carb Numerical Listing.pdf

 

[JamesRS]

uh...71-454, On behalf of many of the people that post requesting information on this board I would like to inform you that sarcastic statements telling people to use google don't help and are of no value.

For your information I already have that Holley PDF and all it says is there is a jet size difference. What I was looking for was the valuable information that Gary was kind enough to post in regards to the idle circuitry and the general designed use of this carb. I was informed that the 8162 has a 4 corner idle circuit, is choke less and Holley called them Competition carburetors. (I found the choke less info on another board) Unlike the 4781 which has a two idle circuit, a choke and is designed as a street double pump carburetor. Once again thank you Gary for your information it is helpful people like you that make this board a valuable asset to our Muscle car community. :thumbsup:

 

[aukai]

If you are upset and don't want to have a conversation keep lurking. Scott,Gary or any of the other more than helpful people here will get them the right info and be happy to do it. I for one count on the help I get here.

 

[R Jay MacReady]

uh...71-454, On behalf of many of the people that post requesting information on this board I would like to inform you that sarcastic statements telling people to use google don't help and are of no value.

For your information I already have that Holley PDF and all it says is there is a jet size difference. What I was looking for was the valuable information that Gary was kind enough to post in regards to the idle circuitry and the general designed use of this carb. I was informed that the 8162 has a 4 corner idle circuit, is choke less and Holley called them Competition carburetors. (I found the choke less info on another board) Unlike the 4781 which has a two idle circuit, a choke and is designed as a street double pump carburetor. Once again thank you Gary for your information it is helpful people like you that make this board a valuable asset to our Muscle car community. 👍

Couldn't agree with you more sir

 

[blue_69_malibu]

14 YEARS LATER......?????

 

[R Jay MacReady]

14 YEARS LATER......?????

Hey I'm a little slow on the uptake

 

[blue_69_malibu]

Hey I'm a little slow on the uptake

We all are, brother. No worries.
Welcome aboard!

 

[R Jay MacReady]

We all are, brother. No worries.
Welcome aboard!

I have my thinking cap on now, so watch out!!