Thread: Could use some help on CAM specs, Timing and idea please!

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What do you have on it for an aircleaner???? What exhaust???????

I had a 1984 one ton crew cab with 454-----------with my back ground----------only changed metering rods in the stock quadrejet and turned over the aircleaner top-the air cleaner is too restrictive altho the factory exhaust system was acceptable-------Engine cruised at around 3300 rpm towing Chapperel trailer at 75 mph and averaged 9 mpg---------friends almost identical truck except was a dually ( these trucks were only 4 serial numbers apart) and he got 6 to 7 mpg with 410 gears and a little smaller of tire on the dually----mine had 373 gear

In my opinion, for the rpm range that these operate, the Edelbrock carb with smaller primaries will have to run with the seconaries in play and will kill mileage---------I prefer a big Holley mech sec so cruise speed/tow is on only the primaries-----

Running 3" Duel Ex with headers. Going to be buying a bigger air cleaner as well hearing it could help a bit. Eventually I'll be taking off the rear-end and again watching videos how to Remove current gears(3.43) and put 3.73 posi. Not sure if limited slip or full posi locker is a better option. I'm shooting for speed over gas mileage though as well. Not worried bout 5mpg long as the Hp match's my gas consumption .