Holley carb - what am I looking at?

[PsyOps]

I've got a fellow trying to sell me what appears to be an older Holley HP carb but doesn't know anything about it. Only numbers I can find are on the air inlet lip - 6R 7921 B - as the picture indicates. What is this? Any help would be greatly appreciated.

 

[pnora]

Look at the throttle plate for numbers. Most dominators without the choke the number is on the main body. I would think the HP is the same. I know my Pro Systems HP has them on the main body.

 

[RemCharger]

And or measure the bores

 

[Orig69]

It looks like a double pumper

 

[PsyOps]

Thanks for the replies. Yes, it is very much a double pumper without a choke horn. It is visually similar to an HP series carb. I'll recheck the body sides for a number right after changing out the fob battery on the wifey's car key. Stay tuned.

 

[70bigblockdodge]

A good one!

 

[RemCharger]

Look at the throttle plate for numbers. Most dominators without the choke the number is on the main body. I would think the HP is the same. I know my Pro Systems HP has them on the main body.

View attachment 1822839

What's the prosystems build date on this guy?

 

[PsyOps]

A little carb cleaner and viola! The body shows:

LIST
134 300C
2058

Now what do we think?

 

[RemCharger]

Thats just a picture I used for an example.

Ok. I know it's an oldie, still has bowl plugs

 

[pnora]

What's the prosystems build date on this guy?View attachment 1822863

Some of Pro Systems builds will not have numbers that identify the actual build. He uses certain Holley components that do not correspond to a Holley list number. Some of Patricks secrets.

 

[pnora]

A little carb cleaner and viola! The body shows:

LIST
134 300C
2058

Now what do we think?

Does not seem right. Post a pic.

 

[PsyOps]

Found it - Holley aftermarket body to convert standard dbl pumpers to 750 cfm. Here's a link - https://www.cjponyparts.com/hp-main...MI3NPBvo2VjAMVjAetBh3HeSwKEAQYASABEgLEn_D_BwE

 

[PsyOps]

Mystery solved. Thanks to everyone for your suggestions.

 

[RemCharger]

Some of Pro Systems builds will not have numbers that identify the actual build. He uses certain Holley components that do not correspond to a Holley list number. Some of Patricks secrets.

Much like air bleed dimensions