Help with holley 4777
Thread Starter
Senior Member
Joined: Mar 2010
Posts: 865
Likes: 2
From: LI, NY
Car: 1985 IROC-Z
Engine: 355
Transmission: T5
Axle/Gears: 3.42 10 Bolt Posi
Help with holley 4777
I have a holley 4777 650dp on my 350. I am having trouble with my needle and seat. I just started to notice it as the weather got warmer because as the pressure builds in my gas tank from sitting in the sun it starts to drip on the secondary's. Then my idle gets shitty and my car wants to stall. Im going to take the needle and seat out to clean but Im just wondering which one do I order if I need to replace it. There are a few different ones .092, .100, .110, .120 etc. Which size do I get and is it best to get titanium, steel, or viton* ?
Thanks
Thanks
Supreme Member
iTrader: (2)
Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: Help with holley 4777
all i know is that the part number is 6-504. hope that helps
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