Join Date: May 2006
Location: Hoyt, Kansas
Bronco Info: 85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
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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