Gear Size
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Gear Size
What would be a good gear for my 77 f150 2wd,,when i get done with the engine im planning on about 350 hp,,hopefully 400,,i will do some occasional towing but mostly just cruisin on the street and hopefully beating some ricers,,any ideas,,it has 2.75 in it right now
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C6 400 with head work, mild cam,,4 brl,,headers,,and tiresize would probably be a little larger than stock,,no more than 2" taller,,whatever size tht would be
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From: Halifx Pa
+1, this would be a nice all around gear for your situation. However, what you have now would be the best as far as for gas mileage.
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From: Colorado
My 77 F250, 460, NP 435, runs 4.10 with 315/75-16 tires has enough low end to climbs house, but runs 3000 rpm at 70 mph. I kinda wish it had something a little lower. I may change it down the road.
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From: Southern Oregon USA
If you're building the 400 to early specs with higher compression, I'd even venture to say 3.50's, maybe even a tad bit higher. Properly built, the 400 will make some great low end to pull that gear easily. I think either 3.70's or 3.50's and you wouldn't be sorry.
Jason
Jason
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If you want to hang with ricers, I'd recommend smaller, wider tires (take a look at a set of 235/60 R15 at Tirerack), maybe some anti-sway bars, maybe a little more lowering, you want to hug the road. How far do you want to race? Short distance = something high, like 3.7 or higher, longer distance, 3.5, or lower number. Build for torque with lower numbers (like the one you got). I actually want the 2.75 for the mileage. Where you from? I have (2) 3.xx rear ends, I want to trade one for a 2.75. Horsepower is made higher in the Rpms than torque. Torque is what gets you off the line.
I've built a few jap rice burners. I start with handling and braking, then speed. I always beat my buddy's "Night Rider" style Firebird with my '97 Mazda 626 I4 (stock motor) when I pick the road, because I built my suspension and braking, and balanced my weight distribution a bit. I threw on smaller tires for more torque too. No fart cans, shiny rims or body kits, just a sleepy looking family car (wink, wink). I can take turns at 90mph that he can only take at 65. Slow and ~steady~ wins the race, more emphasis on the steady part.
I've built a few jap rice burners. I start with handling and braking, then speed. I always beat my buddy's "Night Rider" style Firebird with my '97 Mazda 626 I4 (stock motor) when I pick the road, because I built my suspension and braking, and balanced my weight distribution a bit. I threw on smaller tires for more torque too. No fart cans, shiny rims or body kits, just a sleepy looking family car (wink, wink). I can take turns at 90mph that he can only take at 65. Slow and ~steady~ wins the race, more emphasis on the steady part.
