Mongomann75's 85 Build - Page 17 - Ford Bronco Forum
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post #321 of 327 (permalink) Old 05-16-2019, 10:03 PM Thread Starter
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Nothing major to the 300, I had delusions of grandeur and thought Iíd build a Clifford Performance monster then I added it all up and figured there is no way. Got a lead on a finished block bored .020 and decked, my head is getting done at a local head shop that used to build Yenko engines.

I am looking for reliability and decent power. Plus my very first Bronco was a 300 with the 4 speed as well!



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post #322 of 327 (permalink) Old 05-17-2019, 09:20 AM
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Clifford ain't what it used to be. Quality has supposedly gone down hill.

If anything, a good manifold, 2bbl autolite carb, and efi exhaust manifolds will wake one up pretty good.

What's being done to the head?

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post #323 of 327 (permalink) Old 05-17-2019, 10:37 AM Thread Starter
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The engine I am using sat for a while and was low on compression in #3, when I say low I mean like 10 PSI form the other cylinders. I am having the head gone through, new hardened seats new guides, valves and springs. My guy builds 300 heads for the gas and oil industry, he has a customer that runs their natural gas compressors with 300's. The compressors run 24/7 on the gas they are compressing. Those heads have special guides, seats and valves, there is no lubrication in the gas and he said it beats the seats clear out of the heads. I plan to use a split header and am looking for a decent intake, if I cannot find one I have the 1986 intake that was on the truck and plan to throw the feedback carburetor as far as I can what carb do you suggest? I am looking for an HEI conversion distributor and have been thinking about the Saginaw pump conversion as well. BOV1 is going to be my sons first truck so I want reliable and somewhat capable but not big block power for it....

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post #324 of 327 (permalink) Old 05-17-2019, 12:17 PM
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Definitely do the Saginaw swap. It's easy and well worth it.

For intake manifolds, you have 3 easily available options. The dual port offenhauser is good for carbs under 500 cfm. The Clifford and the Offy 'C' are open plenum and work well with 450+ cfm carbs. I have a Clifford with a 450 quickfuel 4160 4bbl on it. For a 2bbl, the autolite (motorcraft) 2100 series is almost indestructible and runs nearly upside down.

If you ditch the feedback system, you have to go HEI or retrofit a Duraspark2 ignition in. Or a points ignition. The HEI from DUI is great. It starts almost instantly.

If you are doing any slow crawling, I recommend staying away from headers. Mine heat up real fast, and will overheat the engine. Normal street driving, they are not a problem.

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post #325 of 327 (permalink) Old 06-08-2019, 10:06 PM Thread Starter
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Got the rotating assembly together today after mowing grass for 4 hours....


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post #326 of 327 (permalink) Old 06-11-2019, 09:14 AM
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Sweet build! I just read through this entire thread, it's builds like this that make me want to get my hands dirty.
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post #327 of 327 (permalink) Old 06-27-2019, 06:26 PM Thread Starter
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Wow itís been a while!














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