Choosing a carburetor
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Here are a few List numbers (found stamped into the front of the airhorn along with a date code) of the more common or popular Holley carbs: | Here are a few List numbers (found stamped into the front of the airhorn along with a date code) of the more common or popular Holley carbs: | ||
| − | * | + | *Holley 1850 is a very common vacuum secondary 4 bbl carburetor that flows 600 CFM. It's ideal for many daily driver/mild builds. |
| − | *Holley | + | *Holley 0-3310 is a 750 CFM vacuum secondary carb. |
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*4776, 4777, 4778, 4779, 4780, 4781 - These are the traditional "double pumpers". Ranging from 600 cfm to 850 cfm, they are a mainstay of racing and hot street engines. If matched correctly to their application they can be used on the street but economy will not be as good as a vacuum secondary carb similarly chosen. These are 1850 type carbs, having both a primary and secondary metering block and accelerator pumps on both the primary and secondary sides of the carb. | *4776, 4777, 4778, 4779, 4780, 4781 - These are the traditional "double pumpers". Ranging from 600 cfm to 850 cfm, they are a mainstay of racing and hot street engines. If matched correctly to their application they can be used on the street but economy will not be as good as a vacuum secondary carb similarly chosen. These are 1850 type carbs, having both a primary and secondary metering block and accelerator pumps on both the primary and secondary sides of the carb. | ||
| − | *4604 - This is one of the Holley 3-barrel carbs rated at 1050 cfm. The 3 barrel Holley was originally designed for NASCAR stock car racing and was used on the 426 Hemi in 1964. It preceded the Dominator and offered in several versions. It never really hit its stride, suffering from issues below WOT because of the less-than-ideal secondary venturi shape (and booster style in the 1050 cfm version). It was made basically from a Holley 850 w/the center taken out of the secondaries. It used an oversize secondary vacuum diaphragm housing (which the diaphragms are no longer available for) and an early version of the "cathedral" center hung float bowls made famous later, on the Dominator. A carb kit for a 850 can be used w/some modification to rebuild them. Today it has a following among collectors and some actually still use them. They can fetch high prices for good examples. | + | [[File:Holley 3 bbl2.jpg|thumb|250px|left|Holley 3 barrel bottom view]] |
| + | *4604 - This is one of the Holley 3-barrel carbs rated at 1050 cfm. The 3 barrel Holley was originally designed for NASCAR stock car racing and was used on the 426 Hemi in 1964. It preceded the Dominator and offered in several versions. It never really hit its stride, suffering from issues below WOT because of the less-than-ideal secondary venturi shape (and booster style in the 1050 cfm version). It was made basically from a Holley 850 w/the center taken out of the secondaries. It used an oversize secondary vacuum diaphragm housing (which the diaphragms are no longer available for) and an early version of the "cathedral" center hung float bowls made famous later, on the Dominator. A carb kit for a 850 can be used w/some modification to rebuild them. Today it has a following among collectors and some actually still use them. They can fetch high prices for good examples. <br style="clear:both"/> | ||
*0-80532-1 - This represents the Dominator series of Holley carbs, this one is 1250 cfm. The Dominator first was used on the high banks of NASCAR to feed the biggest engines ever used in that form of motorsports. They became just as popular for drag racing and today are available as small as 750 cfm (Holley 0-80186-1) for the "look" w/o the huge flow so it can be used on the street. Because the bolt pattern and footprint is considerably larger than the traditional Holley "squarebore" pattern, a Dominator requires a dedicated intake manifold. Adaptors are available, but should only be used in special circumstances if at all. | *0-80532-1 - This represents the Dominator series of Holley carbs, this one is 1250 cfm. The Dominator first was used on the high banks of NASCAR to feed the biggest engines ever used in that form of motorsports. They became just as popular for drag racing and today are available as small as 750 cfm (Holley 0-80186-1) for the "look" w/o the huge flow so it can be used on the street. Because the bolt pattern and footprint is considerably larger than the traditional Holley "squarebore" pattern, a Dominator requires a dedicated intake manifold. Adaptors are available, but should only be used in special circumstances if at all. | ||
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=='''[http://www.barrygrant.com/ Barry Grant]'''== | =='''[http://www.barrygrant.com/ Barry Grant]'''== | ||
| − | [[File:BG 625newdesign.jpg|thumb|left|300px|BG Street Demon 625 cfm carb]] | + | [[File:BG 625newdesign.jpg|thumb|left|300px|BG Street Demon 625 cfm carb]] |
In 2011, BG underwent a corporation redesign. The "old" BG carb line (Demon, etc.) was replaced by a totally new design carb seen here. | In 2011, BG underwent a corporation redesign. The "old" BG carb line (Demon, etc.) was replaced by a totally new design carb seen here. | ||
| − | This carb is still something of an unknown and untested by many hotrodders; whether it will be a hit or a miss remains to be seen. | + | This carb is still something of an unknown and untested by many hotrodders; whether it will be a hit or a miss remains to be seen.<br style="clear:both"/> |
==Rochester Quadrajet== | ==Rochester Quadrajet== | ||
*[[Quadrajet]] | *[[Quadrajet]] | ||
| − | + | *[http://www.cliffshighperformance.com/ Cliffs High Performance Quadrajets] | |
| − | [http://www.cliffshighperformance.com/ Cliffs High Performance Quadrajets] | + | |
==References== | ==References== | ||
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