WebThe shape of the entry, exit, and size determines flow. All Holley Main jets are flow tested and then stamped with the correct number. Click on … WebSep 14, 2013 · Location: colorado. Posts: 4. Holley 650 tuning. I have a Holley 650 double pumper with mechanical secondaries that I have leaned out way too much. I have size 64 jet in the primaries and size 68 in the secondaries with a 5.5 PV. I have recorded the AF mixture with my LM1 and it shows 11.5 to 12.5 at cruise approximately 2000 RPMs.

Holley Standard Main Jets - Summit Racing Equipment

WebHolley main jets allow you to fine tune your carburetor. These jets have 1/4"-32 UNF thread and they are offered in a wide variety of hole sizes to allow fine tuning of your specific … WebFind many great new & used options and get the best deals for 4 Used Holley 2/4 barrel Main Jets #66 & #69 carburetor parts at the best online prices at eBay! albiero luigi srl

Amazon.com: Holley Carburetor Jets

WebJan 15, 2014 · 3310-2 from the factory should have 72s in the front ...metering plate 134-21 with main jet restriction of .081. Power valve a 125-65. 65 Should be stamed on the valve. Some aftermarket kits dont show the number on the power valve so unless you have a tester your at there mercy. All 3310's listed in my holley book have the same jets … WebSep 1, 2024 · A two digit standard jet is allowed 3% variation in flow. Three digits ending in 1 or 3 were used by factory calibration, and I too have found H on a jets installed by the factory. Three digits were also used for close-limit jets with only 1.5% flow difference allowed. Last are three digit metric jets used on model 4360 and 5200 carbs. WebJul 11, 2002 · I have 71's in the primarys, they come with 72's. I think you should start with 72's and work up ( checking your plugs along the way) Patrick. [This message has been edited by Carnut108 (edited 07-09-2002).] 71 Elky 468 BB, Crane 282H, 850 Holley, 3.73 12 bolt posi, Dynomax coated headers, 2 1/2" & 40 series flowmaster. albiero informatica