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Forum: Pontiac - Street 01-24-2019, 01:34 PM
Replies: 488
Views: 68,301
Posted By Formulajones
Thank you Tandyman, much appreciated. I just had...

Thank you Tandyman, much appreciated. I just had a simple question and wanted to hear from one side or the other. Tuner gave an excellent explanation in that link as to what he prefers with good...
Forum: Pontiac - Street 01-23-2019, 09:31 PM
Replies: 488
Views: 68,301
Posted By Formulajones
That doesn't explain or show what I'm asking. ...

That doesn't explain or show what I'm asking. That appears to be explaining how the air and fuel mix and the relationships between air bleed and fuel bleed sizes, but mentions nothing about why some...
Forum: Pontiac - Street 01-23-2019, 06:32 PM
Replies: 488
Views: 68,301
Posted By Formulajones
You're way off base Tom. Everyone is fully aware...

You're way off base Tom. Everyone is fully aware of anything I do here and why this approach makes sense from a functional standpoint. They only have to look stock on the outside, we make things...
Forum: Pontiac - Street 01-23-2019, 04:20 PM
Replies: 488
Views: 68,301
Posted By Formulajones
There's reasons for doing it. The first...

There's reasons for doing it.

The first problem is when you get into these factory part numbered carbs, date codes, like DZ holley carbs, L78 holley carbs, CJ holley carbs etc... these things can...
Forum: Pontiac - Street 01-23-2019, 11:19 AM
Replies: 488
Views: 68,301
Posted By Formulajones
Ooops sorry, I was speaking of the old 2 emulsion...

Ooops sorry, I was speaking of the old 2 emulsion hole metering blocks.

I move it to the top on some occasions where the IFR's are too big. So it's much easier to just remove the lower brass...
Forum: Pontiac - Street 01-22-2019, 09:43 PM
Replies: 488
Views: 68,301
Posted By Formulajones
Wow this thread ballooned. I haven't visited...

Wow this thread ballooned. I haven't visited this in a while.

So I haven't read everything Tom but have you touched on modifying things? For instance moving the idle feed restrictors in the...
Forum: Pontiac - Street 03-15-2018, 04:01 PM
Replies: 488
Views: 68,301
Posted By Formulajones
You're right, having it open that far is reason...

You're right, having it open that far is reason for concern. It will cause quite a few problems, high idle only being one of them.
Forum: Pontiac - Street 03-15-2018, 03:27 PM
Replies: 488
Views: 68,301
Posted By Formulajones
Doesn't look like that would work very well, no...

Doesn't look like that would work very well, no secondary accelerator pump shot, and when they removed the vacuum secondary diaphragm they just left the vacuum port open.

Some guys back in the...
Forum: Pontiac - Street 03-15-2018, 02:14 PM
Replies: 488
Views: 68,301
Posted By Formulajones
Yep, that's why I mentioned this little tip. I...

Yep, that's why I mentioned this little tip. I see these carbs at swap meets occasionally, usually fairly reasonable because the owner thinks it isn't serviceable. Cool carburators, thanks for...
Forum: Pontiac - Street 03-15-2018, 11:35 AM
Replies: 488
Views: 68,301
Posted By Formulajones
Just a tip for those that might be rebuilding one...

Just a tip for those that might be rebuilding one of these. These vacuum diaphrams are larger than a typical holley 4-barrel. They happen to be the same size used on the 67-69 tri-power Corvette...
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