3810 holley

[Timothy B.]

I am working on a date correct 3810 holley for my 67 and have a question about the metering block. This block appears to be warped as can be felt by my thumb on the side that mates to the main body. It's opposite the ported vacuum slot but in the same area in that flat.

Has anyone ever had any luck plaining the block flat eliminating the ridges inside and ridge that goes around the outside? I can't see how this would hurt, I appreciate any comments.

I can purchase a new blank metering block and it will be drilled to the 4743 specs if last resort but it will probably not match the original in color or small nusances.

[Clem Z.]

Re: 3810 holley

I am working on a date correct 3810 holley for my 67 and have a question about the metering block. This block appears to be warped as can be felt by my thumb on the side that mates to the main body. It's opposite the ported vacuum slot but in the same area in that flat.

Has anyone ever had any luck plaining the block flat eliminating the ridges inside and ridge that goes around the outside? I can't see how this would hurt, I appreciate any comments.

I can purchase a new blank metering block and it will be drilled to the 4743 specs if last resort but it will probably not match the original in color or small nusances.

if you look close you will little raised edges around each passage which helps seal it to the gasket. i straighten all mine in a fixture that i believe is posted some where here on the website

[Gerard F.]

Re: 3810 holley

if you look close you will little raised edges around each passage which helps seal it to the gasket. i straighten all mine in a fixture that i believe is posted some where here on the website

Tim,

I have had success with straightening out a 3810 secondary metering plate in a vise (between plates with holes for the little studs) and shimming up the high points. But with a metering block, it is a lot more difficult because of the ridges. I've seen that jig that Clem has designed in an archived post but I just can't find it.

Clem, if you would be so kind, could you repost that picture of your metering block jig. I'm working on a 3810 restoration project, and I am sure that both Tim and I would appreciate your advice.

[Timothy B.]

Re: 3810 holley

Thanks Jerry and Clem,

I called Holley yesterday and the tech man said they have one 4743 metering block in stock so I will see what they send me.

The metering plate for the secondary I will straighten.

What I wanted to mention is the way this primary metering block seems to be warped. It's on the flat just outside the idle down well like described in my first post and it sure seems like this would be a vacuum/gas leak at some point. What would cause a metering block to warp like that??

If you look at the new Holley HP metering blocks they have webing in these areas to prevent this type of warping. I will post a pic later to show the exact area as I bet this is a overlooked spot that has caused grief for some.

[Clem Z.]

Re: 3810 holley

Tim,

I have had success with straightening out a 3810 secondary metering plate in a vise (between plates with holes for the little studs) and shimming up the high points. But with a metering block, it is a lot more difficult because of the ridges. I've seen that jig that Clem has designed in an archived post but I just can't find it.

Clem, if you would be so kind, could you repost that picture of your metering block jig. I'm working on a 3810 restoration project, and I am sure that both Tim and I would appreciate your advice.

i no longer have that picture on my computer so i will have to take some more later today.