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#26 | |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
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#27 | |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
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#28 |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
I got this in the mail and have installed it. I have the trans modulator and the brake booster running to it. I'll send new pics when I get a chance.
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#29 | |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
Quote:
That link to the thread about transition slots isn't working for me. Mind sending the title of the thread and I'll search for it? |
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#30 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,639
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Re: Help with Edelbrock 1406 install
There’s a section in here about transition slots on a Holley. Same idea for all carbs.
http://www.crankshaftcoalition.com/w...EI_distributor While the 9266 gasket is good, a heat spacer like this might be better. https://www.amazon.ca/Edelbrock-8711...49839644&psc=1 |
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#31 |
Registered User
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
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Re: Help with Edelbrock 1406 install
You're welcome, glad to help. Here, try this link for the transition slots: http://67-72chevytrucks.com/vboard/s...d.php?t=713728
The link geezer posted for the HEI is a great one too. Also a good read. Is your intake a square bore or spread bore? Geezer may be right with his spacer recommendation; that will work better on a spread bore.
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72 C10 lwb fleetside -stock 350/350 combo |
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#32 | |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
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#33 |
Registered User
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
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Re: Help with Edelbrock 1406 install
That is a spread bore intake manifold. Original GM style for the Q-jet carbs. You're gonna need a spread bore to square bore adapter, like the Edelbrock 2696. I've never run one of these, so I don't know if the aluminum adapter will still transfer enough heat to the carb to make it percolate fuel. Hopefully someone can chime in on this. I'm hoping you won't need an adapter, plus the heat gasket. Will need longer carb studs too. How thick is the gasket in your pic, 1/2"?
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72 C10 lwb fleetside -stock 350/350 combo |
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#34 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,639
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Re: Help with Edelbrock 1406 install
You don’t need a spreadbore adaptor.
You need a sealing plate like this. https://www.jegs.com/i/Edelbrock/350/2732/10002/-1 Then put your heat spacer on. I wonder if your Holley problems was just a vacuum leak created by no sealing plate. |
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#35 | |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
Quote:
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#36 |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
Guys,
For this 3 marks on the balancer issue. Does it make sense to assume that the first mark when spinning (closest to passenger side) is 0 degrees and the other marks are for the timing settings that the mechanic wanted? Also that first mark is painted as a straight line across the balancer and the others are dots on the outside. Thanks, Jeff |
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#37 |
Registered User
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
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Re: Help with Edelbrock 1406 install
It's going to be the one that goes across the balancer and lines up with the timing tab.
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72 C10 lwb fleetside -stock 350/350 combo |
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#38 |
Registered User
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
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Re: Help with Edelbrock 1406 install
Here's a little info on it https://www.crankshaftcoalition.com/..._TDC_lines_SBC
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72 C10 lwb fleetside -stock 350/350 combo |
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#39 |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
Some good progress this weekend, but also another roadblock.
Installed the spacer plate and the wood spacer. That works great. Also, sorted out the marks on the balancer and remarked - white line across at 0 degrees and a red mark at 32 degrees. Then got stuck. When timing it, the timing marks are jumping all over the place. Can't get a read on it. Read about it and found that maybe there's an issue with the distributor? I replaced the plug wires in case it was that. Same issue. The distributor is new with the engine. About 5000 miles total. Also, I was about to replace the springs in the distributor (1 blue / 1 white), but didn't figure out how to get the rotor off. I thought you just pulled that up. It didn't come off. 1 step forward, but no real progress in getting it running better. Last edited by jtinpdx; 11-11-2019 at 01:42 PM. |
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#40 |
Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,557
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Re: Help with Edelbrock 1406 install
Test the timing light on a 2nd vehicle to make sure the light isn't the source of the jumping flashes.
Rotor on a standard HEI should pull off after the two screws are removed. Start it in the dark after your eyes have adjusted and look for sparks. 35,000 volts is always looking for a way to escape. Probably a silly observation but the front nuts on the carb studs are missing. |
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#41 | |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
Quote:
I'll try a couple of things this weekend. Another timing light, and also making sure the timing light sensor isn't too close to another plug wire. My suspicion is that that's the issue. I'll space the wires out and try again. Will let y'all know. -Jeff |
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#42 |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
Made a lot of progress today so thought I'd send an update.
I got the timing situation figured out. A different light worked and then the old light worked too. I might have had the sensor laying against a second plug wire. The I timed it based on suggestions here. Started with 4 degrees btdc as a starting point (vacuum line plugged). Then took the springs out of the distributor, unplugged the vacuum line, and set at 32 degress at 2000 rpm. Runs much better. Then I put in the Crane Cams springs. I chose 2600 rpm to be in all in at 32 degrees. Funny thing about the kit. You guys on here said blue spring and white spring. Directions say blue spring and yellow spring. And the package includes silver, copper, and black springs. No blue, white or yellow. But easy to figure out which was which. One heavy, one light. Then I started on the carb. Just the idle speed and idle mixture screws for today. Might fine tune those tomorrow and tinker with the innards tomorrow. See below for some pics of everything all the way back to the trans and brake vacuum lines. And breather and PVC swap. Thanks again for all the help on here. I appreciate it a great deal. -Jeff |
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#43 |
Registered User
Join Date: Aug 2014
Location: Portland, OR
Posts: 132
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Re: Help with Edelbrock 1406 install
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