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Old 10-24-2016, 09:00 PM   #1 (permalink)
Powellbr
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Questions about rough estimate of fuel mileage of my application

Hi all, this is my first post on here and I was wondering what kind of fuel mileage I can expect to look at with my application. I'm either going to build a turbo'd 350 gen 1 chevy or a combination gen 4/5/6 502 chevy, either option will have multi-port injection from FAST and a distributorless ignition system from efi connection with granatelli motorsports Malevolent series coils that are rated at an 85,000 volts spark. I'm aiming at 650~700 horsepower on 30 psi of boost. No matter what engine I do build though, it's going to go into my 1993 extended cab short bed Chevy Silverado 1500. I'm going to swap the factory 4l60e to a fully manual 4l80e that's going to be built with metal clad seals, alto red eagle clutches & kolene steels, a billet input shaft, and the Transgo stage 3 shift kit. It's going to be coupled to a ford style Np205 transfer case built with a gm 32 spline input shaft, billet bearing retainers,and a rear slip yoke eliminator kit.

Rear axle is going to be a Torq 14 bolt axle housing with 40 spline 300m axles, an ARB air locker, six lug wheel hubs, Deaver long travel springs, and shackles that allow for up to 18 inches of travel. Front ifs will consist of an AAM 9.25" diff with upgraded axles, an ARB air locker, RCV axles, and a Vegas Desert Fab 4 wheel drive long travel kit that will allow for up to 15 inches of suspension travel. Truck will also have 4.10 gears in both axles.

Fuel system will consist of either a 25 gallon tank and a 42 gallon tank mounted behind the rear axle in between the frame rails or 2 25 gallon tanks with the 42 gallon tank up and behind the rear axle with electric fuel pumps in the tanks with a swirl pot to lessen the chance of fuel starvation.

Wheels will be 17x9 Ultra nomads with beadlock rings, tires will be 40x12.5x17s Pro comp Xtreme MT2s.

Thanks in advance, I know it's a long post but I've got a lot of work that I'm going to do

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