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I have got to try to do something about my crappy gas milage (7mpg at best). I drive the truck daily around town, never exceeding 45mph. No highway driving, no pulling anything. Currently, I have a stock 2bl and cast iron manifold. Is it worth spending the $500+ for an Edelbrock aluminum dual plan manifold and 500 4bl carb setup. With smaller primary jets than a 2bl and disiplined driving, in therory, I should yield better mpg, but will it be signficant? I would be ok with 10mpg
Anyone done this B4?
BTW, the truck is tuned properly and has a new tranny.
You might want to look into headers for that 360, my 70 had one in it and I remember those exhaust manifolds were horribly designed, almost flat. That would be my suggestion for the first upgrade.
It pretty much just boils down to if you want to spend the money on the upgrade, and get slightly higher mileage, or just end up throwing that $500 in the tank (which won't take long).
Also, the fact that it's a 4x4 on 33s will cause her to eat some extra MPGs. Great looking truck, by the way.
I only have around 10mpg in my 68, highly modified engine. I agree with the headers will give you the bust bang for the buck. Also look at a tune up, plugs, wires, cap rotor. And do a conversion to eliminate the points. A higher energy ignition system helps too.
What rear axle ratio are you running? If its geared low, it will get the same weather loaded or not.
Intake manifold, not exhaust manifold Headers r not on the plate. They r nothin but a PITA especially on 4x4's like mine (clearance, heat, blahh,blahh,blah). I will never put them on. The rear is fine (not low). I agree w/tires. PO put them on and I will drop down to a decent size when they r done.
I will also try the forum u suggest Mil1on. Have not had much luck in the past w/answers there though.
We know you were talking about intake, but with those stock manifolds, you'll just be pumping a whole lot more in, and it won't have any decent way to get out. There are 4x4 headers available for your truck. Hell, even some shorty bolt-on-and-go headers will be a hundred times better than those flat stocks. Just bolting a new intake and carb on there wouldn't be worth the cost compared to the small rise in mpgs you'll get, IMO.
If you're determined on keeping the stock exhaust, you might be better off retuning what you already have under the hood, and getting it running as prime as possible, instead of dropping a lot of money into a new intake/carb. It is an old gas hogging truck, so there's only so much you can do. I'm running a rebuilt 400 and C6 with under 2K miles on both, and I'm running about 8-10 mpg street, and 10-12 mpg highway if I'm being gentle (lifted 4x4 on 35s).
My 2wd 70 with a 360 only got about 8-9 mpgs, so you're ahead of that old rig, seeing as I didn't have the second axle weighing me down and it was on 31 inch pizza cutters.
Intake manifold, not exhaust manifold Headers r not on the plate. They r nothin but a PITA especially on 4x4's like mine (clearance, heat, blahh,blahh,blah). I will never put them on. The rear is fine (not low). I agree w/tires. PO put them on and I will drop down to a decent size when they r done.
I will also try the forum u suggest Mil1on. Have not had much luck in the past w/answers there though.
U allow n for the O dometer be n rong account of da tire size?
Mebe git betur resultz if U bodered to spel wurt a ++++?
...oops, not a newsgroup :/
Alvin in AZ ('75 F150 360FE-2V 2100 ~12mpg, no kidding)
ps- act/sound/type grown up and get grown up answers?
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