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Forums->Hot Heads Tech Talk->dual in-line Holleys / Distributor interferance

WayneJ
dual in-line Holleys / Distributor interferance


I'm assembling a 331 for a customer and I've ran into a snag. This engine has a Weiand #50010 2X4 intake, HH #80559 offset carb adapters, and 390 Holleys. The distributor we have is a MSD #8391 Pro Billet. Although the distributor body will drop in the hole ok, there is no way that the dist cap is going to fit because the rear carb float bowl is in the way. I even tried a 1" spacer under the carb and it will still not clear. Is there a short style distributor that's available, or anyone have any other ideas?
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on: Tue 29 of Aug, 2017 [16:54 UTC] reads: 455

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WayneJ
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Re: dual in-line Holleys / Distributor interferance
on: Thu 31 of Aug, 2017 [20:25 UTC] score: 0.00
2" spacers under the carbs would make everything clear, but I don't really want to go that route. This engine is a bit of a show piece...I have over 40hrs in block smoothing and paint on this thing; and intake, valley cover, valve covers, timing cover, water pump, etc have all been polished. Throwing 2" spacers under the carbs would take away from the clean look. I considered billet spacers and polishing them, but I'm not sure that would even look right; plus billet spacers would be another $200 - $300, not counting time polishing. Before I'd let my customer spend that on spacers, I'd just switch to a HH tunnel ram. Right now I'm leaning heavily toward cutting the MSD distributor and shortening it. I hoped to get a replacement bare housing from MSD to experiment with but they were pretty much dicks about it and weren't willing to help out at all. I suppose I need to strip the distributor down and see how much meat I have to work with at the base of the housing.

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George
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Re: Re: dual in-line Holleys / Distributor interferance
on: Sat 02 of Sep, 2017 [16:55 UTC] score: 0.00
. I suppose I need to strip the distributor down and see how much meat I have to work with at the base of the housing. don't forget you have to have room for the wires also. Are you talking about cutting out part of the narrow section & tig welding it back together? might work, but would probably look like s&*t.

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WayneJ
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Re: dual in-line Holleys / Distributor interferance
on: Wed 30 of Aug, 2017 [18:30 UTC] score: 0.00
I already have two new 390 holleys; and with a mild 10:1 331 street build I'd much rather run 780cfm rather than 1000cfm or 1200cfm.
I'm tempted to cut the MSD distributor and shorten it; I was just wondering if maybe someone had already made this setup work and could offer some advice before I take the plunge on chopping up a $400 distributor.

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George
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Re: Re: dual in-line Holleys / Distributor interferance
on: Thu 31 of Aug, 2017 [15:33 UTC] score: 0.00
Carter used to make 400s for 2X4 setups, probably couldn't be found now. I suppose you can't use spacers under the carbs?

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George
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Re: dual in-line Holleys / Distributor interferance
on: Wed 30 of Aug, 2017 [15:36 UTC] score: 0.00
Holleys are long & narrow, use Edelbrock/carters they are wide & short.


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