EngineerDoug
Well-Known Member
Hello all,
I have been rebuilding a 4160 style Holley 650 that I got for a song - not surprised it has some issues but I'd like to get it running right anyway. This is a stock carb for a 1968 440. I'd like to use it on my resurrected 383 for a while, so I don't want anything fancy or pricey.
I can see that somebody has been into this carb before, and the first odd thing I see are #59 main jets. I can't find any resource on the web to verify this, but wouldn't you expect to see jets closer to mebbe #65 for a carb this size? Could these #59's really be stock?
I also see something strange in the secondary bowl assembly. I am used to double pumpers with a secondary metering block, so the metering plate business is new to me. I see there is a metering plate/body - looks more like a metering body because it is about 0.10" thick. Underneath that is a rectangular gasket the size of the entire bowl, and then an anodized rectangular plate that same size. Under the plate is another gasket and then the carb main body. What is perhaps odd is the lack of what you might call a metering sealing plate. This would be a thin funny shaped plate shaped just like the metering plate/body, and it would be sandwiched between the carb body and the metering plate/body. I see them in exploded diagrams of the 4160 series. Does the big rectangular plate I found serve this function? Or did somebody rebuild the secondary area and discard the funny shaped plate?
I just would like to know that all the pieces are there. Maybe back in '68 the plate was indeed a big rectangular affair, rather than the funny shaped ones you see in more recent models. Again, I am familiar with double pumpers, but not the vacuum secondary models.
Thanks!
I have been rebuilding a 4160 style Holley 650 that I got for a song - not surprised it has some issues but I'd like to get it running right anyway. This is a stock carb for a 1968 440. I'd like to use it on my resurrected 383 for a while, so I don't want anything fancy or pricey.
I can see that somebody has been into this carb before, and the first odd thing I see are #59 main jets. I can't find any resource on the web to verify this, but wouldn't you expect to see jets closer to mebbe #65 for a carb this size? Could these #59's really be stock?
I also see something strange in the secondary bowl assembly. I am used to double pumpers with a secondary metering block, so the metering plate business is new to me. I see there is a metering plate/body - looks more like a metering body because it is about 0.10" thick. Underneath that is a rectangular gasket the size of the entire bowl, and then an anodized rectangular plate that same size. Under the plate is another gasket and then the carb main body. What is perhaps odd is the lack of what you might call a metering sealing plate. This would be a thin funny shaped plate shaped just like the metering plate/body, and it would be sandwiched between the carb body and the metering plate/body. I see them in exploded diagrams of the 4160 series. Does the big rectangular plate I found serve this function? Or did somebody rebuild the secondary area and discard the funny shaped plate?
I just would like to know that all the pieces are there. Maybe back in '68 the plate was indeed a big rectangular affair, rather than the funny shaped ones you see in more recent models. Again, I am familiar with double pumpers, but not the vacuum secondary models.
Thanks!
