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Old 07-22-2006, 10:17 AM
Hawkrod Hawkrod is offline
Join Date: Oct 31 2005
Posts: 288
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Default RE: Brake drums

dphonohan, I don't know what you read but I can honestly say a Holley double pumper is absolutely not a good carb for a 352 and the Holley books should have told you that. A double pumper is strictly a high performance carb designed for engines with low vacuum signals and race type driving. A street car should always use a vacuum secondary carb. Also, a power valve is device that does not create vacuum, it is operated by vacuum. They are rated by how many inches of vacuum is required to open them. Double pumpers have very low number valves as they are designed for race engines with low vacuum signals. On a normal engine a low number valve will open too soon and use way too much fuel as you now know! I am sorry that somehow you ended up with that carb because it is a very poor fit for your application and the reality is the model 1850 vacuum secondary carb is ideal for a 352 and much cheaper than what you likely paid. The 1850 is kind of amusing because it is the most popular and cheapest Holley but the real story is it was designed for the 1959 Mercury and Ford cars and was OEM originally but is still being produced today! Hawkrod
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