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4 Hole Vs Open Carb Spacer
4 Hole Vs Open Carb Spacer. All, raise the carb away from the. A spacer introduces so many changes that the effects are not always easy to quantify.
The open plenum spacer would defeate the purpose of a dual plenum which has better idle to mid range than a open plenum. The engine did pick up power with the spacers. That and it has 4 holes rather then one hole, more is always better.
All, Raise The Carb Away From The.
In my testing, the performer rpm lost a good bit of midrange torque with the open spacer on the 410hp 428 cobra jet dyno mule, as compared to the four hole spacer, and did not gain any top end horsepower. 4 hole spacer helps strengthen the carb signal and allows it to pull from the boosters more smoothly and evenly. Start date aug 30, 2015;
#2 · Sep 25, 2005.
Pros & cons about a 4 hole vs open vs dual plane carb sp. There are pros and cons to both 4 hole and open carb spacers. I'm running an open plenum weiand, with an open spacer and looking to do one of the next mentioned.
Old Time Theory Says The Four Hole Is Better For Low Speed Power And The Open Design Is Better For Mid To Upper Power.
Oddly obsessed with big scoops on little mustangs. I run them on my dirt cars and it works great. Discussion starter · #16 · jun 23, 2007.
Looks Very Easy To Make.
Much better than an open. The 4 hole will be best, that is designed for dual plenum intakes, like your's. Backdraft 879, indigo blue / wimbledon white, 428 cobrajet, tko 500.
Aug 31, 2015 #11 1.
I just installed a 1/2 open phenolic spacer (hood clearance issues) and my tq curve is still flat as a pancake. The open plenum spacer would defeate the purpose of a dual plenum which has better idle to mid range than a open plenum. Secondary carb, the older comp 274xe cam and 1.
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