Nettet6. nov. 2006 · Hi guys - Working on a Holley 4778-2, 700 CFM double pumper. Somewhere in its previous life a 50cc secondary pump was installed. ... Most of the Holley double pumpers on combos similar to yours work well with the orange pump cam in hole # 1 and # 31 squirters front and back. Nettet30cc Pump Cam - Orange. $4.12. Part# 41-466QFT. Add To Cart. Holley. Accelerator Pump Arm. $18.06. Part# 20-114BK. Add To Cart. ... 30cc Pump Cam Pink - Comes with fastening screw, sold individually. ...
Holley 20-12 Accelerator Pump Cam
NettetI'm running into a carb backfire issue due to not having a smooth enough fuel delivery by the accelerator pump. I'm bringing the carburetor back to mostly st... Nettet13. mai 2015 · Main Jet 65 primary (waiting for a 66) secondary 70. Squirter Nozzle 28. Pink Cam, hole 1. Vacuum in Drive 11"ish. Idle Speed 840. Idle AFR 14:1 (idles nice and smooth) Off idle cruise between 14.5:1 and 13.8:1. Cruise on main jet almost 15.7:1 average sometimes 16:1 (tad lean, will change from 65 jets to 66) creating shortcut on desktop for website
Most aggressive Holley pump cam? - Don Terrill’s Speed-Talk
Nettet14. jul. 2004 · They will want to be in the same order as the numbers on the throttle lever. #1 on top and #2 on the bottom. The ends of the cams have a tab/notch, the long side of the tab goes towards the throttle arm.... Put the screw in the #1 throttle hole, and the #1 cam hole for #1 position. Put the screw in the #2 throttle hole and the #2 cam hole for ... Nettet21. apr. 2011 · I've got a Holley 670 cfm Street Avenger on my 351w; it has the factory, orange accelerator pump cam installed right now using the top screw hole. My car has … Nettet10. sep. 2014 · The blue cam is the next steepest. That pink cam is one of the slowest so something like a orange or black may help Sometimes pump cams help but I usually find that squirter size needs to be addressed first then I fine tune with the pump cams. Pump cams are not to pricey just slightly more than a new squirter. So you can go either … do brown shoes go with navy blue pants