Thread: Fuel Efficient Super Charging?

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Heres what I got...

1968 Chevy C10, 350, .030 over, 881? Casting heads, flat tops, Comp Cams 292H, Demon 850, Weind 144 Blower

I was towing my Jeep home and the water pump belt broke. I was on a fast moving highway with nowhere to pull off. Temp went to 260 degrees, I couldn't stop pinging and popping like crazy. Next day, wristpin is slapping. So I need a new motor.

Income tax is coming soon and I was messing with the idea of TBI. Think I could find, build and drop in a 350TBI and get low teens gas mileage and still be supercharged? Even 11/12MPG will be fine. But the more the merrier.

No clue on building a supercharged TBI motor, like inject work, sensors... I've had no problems with my carb'd motor but this fuel injection stuff is new to me.

Help Please...

Originally Posted by joe_and_jeep

Heres what I got...

1968 Chevy C10, 350, .030 over, 881? Casting heads, flat tops, Comp Cams 292H, Demon 850, Weind 144 Blower

I was towing my Jeep home and the water pump belt broke. I was on a fast moving highway with nowhere to pull off. Temp went to 260 degrees, I couldn't stop pinging and popping like crazy. Next day, wristpin is slapping. So I need a new motor.

Income tax is coming soon and I was messing with the idea of TBI. Think I could find, build and drop in a 350TBI and get low teens gas mileage and still be supercharged? Even 11/12MPG will be fine. But the more the merrier.

No clue on building a supercharged TBI motor, like inject work, sensors... I've had no problems with my carb'd motor but this fuel injection stuff is new to me.

Help Please...

Check with a reputable company like Blower Drive Service, they build them and have done all the expensive R&D stuff, and sell combinations and give recommendations that work....

a 144 Wieand Blower will produce 4-7 PSI of boost, and fit under the hood of your '68 C10, using a drop base air cleaner, and 2" element. gas mialage is figured in at 4% parasitic loss, that's what the holley manual says anyway. control the holley commander 950 TBI with a megasquirt EFI controller and you will have it made

Put a smaller cam in there and your gas milage will be fine.

I think I may of just scored Holley Projection for free thru the barter system. Bought a car, sold spare parts to recoupe the cost and might be trading the leftovers for the fuel injection.

Its the 225-400hp setup. But I think that will be fine? I am gonna go milder cam and 8.5:1 compression. What heads? Should I stick with 881 castings or go with aftermarket? I dont mind dumping some money into this because I want to be able to reliably tow with it and get somewhat decent fuel mileage and still have power to horse off with.

Originally Posted by Matt167

a 144 Wieand Blower will produce 4-7 PSI of boost, and fit under the hood of your '68 C10, using a drop base air cleaner, and 2" element. gas mialage is figured in at 4% parasitic loss, that's what the holley manual says anyway. control the holley commander 950 TBI with a megasquirt EFI controller and you will have it made

I like it.