well speaking in great honesty as i have quite a bit of mechanic experience with drag cars as well as 4x4's. Especially with a truck, your not going to get a noticeable amount of power from bolt on's. infact when i vehicle is designed from the factory it is designed to have efficiency and suitable power, when you add a new intake\carb, that may help a bit but probably be about 8-15 hp. tops notvery uch gain for the cost. you will most likely dump lots more fuel and have very limited gains. 3 dueces is a poor choice for a truck, they are meant to dump air and fuel all at once. you will overload the engine and destroy any gas mileage. just remember, a big carb and manifold may provide more air and fuel but if its backed up by stock cam, valves, compression and exhaust you can actually lose power along with mileage. and when you have an older truck with high miles and it still runs sound, its b\c it has worn and aged together, if you add new performance parts you are often times asking for trouble.....but if your anything like i was at 16 or 17 your gonna do it anyways..cant really blame you, thats how i learned...lol so for an intake you want a very mild low rise dual plane. edelbrock performer intake manifold, idle to 5500rpm. i wouldnt go any larger and definitely stay away from single plane intakes. and get a holley carb no bigger than 600cfm but 500 or 550cfm would be better. mechanical secondaries are easier to work on but will waste fuel in a truck (4150 series) i would suggest a standard holley 4160 series with vacuum secondaries. and when you adjust the secondaries to open, read the manual very carefully, most ppl want the secondaries to open fully all at once like a mechanical carb....but they are not meant to...remember its not a race car. i have the same combo on my 85 bronco with a 302 along with shorty headers. not a powerplant but it does what i need it to. only reason i even put a edelbrock intake and a carb on it was b\c it was cheaper than buying oem parts...lol true story.
