Question on Holley 2300 500cfm
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Senior User
Joined: Aug 2004
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Question on Holley 2300 500cfm
The 2300 I have is a newer one. but something puzzles me, I have searched the holley site but found nothing on it. on the base of the carb are 2 ports a frount one and a side one , the frount one is at man vacuum and the one on the side seem to be a delayed port, it will slowly get to manifold vacum just sitting at Idle. now i need to get ported vacuum for my distro. on the pass side of the meetering block is a small hole but the end (inside) of the hole is filled, now if I remember correctly this should be the passage for the ported vacume. Why isn't it taped ? and can it be taped ? and how would I do this. I think this is the problem I'v been fighting with this carb. I need to get full ported vacuum ( 0 at Idle , vacuum when plates open ) please does anyone know the anwser to this riddle ?
Thanks.
Thanks.
Thread Starter
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Senior User
Joined: Aug 2004
Posts: 498
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Well I was finally able to get a hold of holley, they sugested drilling 2 holes in the throttle plates and acknolaged that some vacum would be present on the delayed port. i did a bit more searching and found an artical that recomended to go to manifold vacum becouse of the way gas is made now. I did and it finally gets the proper plug collor. its great, i have great power now and everthing, all I had read said to use the ported Vacum but now that im using manifold vacum everything fell into place, and as a added bonus i was able to drop 4 jet sizes, now running 72's at 12*BTDC, 10* in the distro, changed a spring in the mech advance so it's all in around 3,500 rpm, And it works great.
Good power, smooth, pipes sound and look good, and running cool. Finally!!!
Good power, smooth, pipes sound and look good, and running cool. Finally!!!
