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hey, im a 17 year old who would like to start building my dream truck but i have many decisions to make on parts and mods.(do keep in mind my teenage budget because i work for everything i get and 'mommy and daddy' aren't paying for any of my truck parts.) im building a 77 crew cab/w 8ft box.
Q#1: i have a dana 60 front and dana 70 rear/w 4:10 ratio. should i stay low or go high with like 3:54?
Q#2: i got a set of 44's(yea, i know, im one of those "damn kids") what lift should i go with? how much suspension and how much body?
Q#3: for my dana 70 rear, should i put a Detroit Locker in it, leave it alone, or something else? same question for my dana 60 front.
Q#4: i hear all this stuff about NP205 transfer cases. should i go with one of those or something else? divorced or married to the tranny?
Q#5: i have a 460 police interceptor. good idea or bad idea? if not such a good idea, what motor should i go with?(big block of course)
the only thing i know for certain is im going with a 4 speed.
the body is ok, but the truck completely gutted out mechanically speaking. just a frame with all my stuff like my motor, tires, and axles are in a nearby shed.
Welcome to the forum.
As far as the 4.10 gears, I would stick with those if you are going to run 44" tires.
The 460 would be a great engine for a 4x4. Lot's of torque.
you won't have any driveability with 44" tires... nobody makes a DOT approved 44" tire anyway, so you couldn't legally drive it.
44" Swamper TSL's and Boggers are DOT approved as well as 44" Hawgs (which actually measure 41-42"). The IROK 49" are DOT approved as are the 53" Michelin XZL's. As far as drivability that all depends on what you consider drivable.
You will need lower gearing than 4.10's with 44" tires though or you'll really lug your engine down. Try 4.88's or 5.13's.
4.10s are MINIMUM- but OK to start with; I would recommend smaller tires. 44s are nice, but for your only vehicle and wanting some drivability, 37-39" tires would be much more practical and still look good. You could sell the 44s to a mud bogger or save them for another time...
The 205 is a great choice for T-C; stay with a 460- that is a good choice for a truck that will be pushing 7000 lbs; Married transfer case as stated earlier; Open is fine unless you really wheel hard- then start with just a rear Detroit ($pendy on a D70) Leave the front open unless you start rolling in cash, then an ARB is a good choice. Put a Detroit Locker in the front axle of a crewcab, and you will need the proverbial 40 acres to turn around in in 4WD...
ARB, OX, and the Electrac or electric lockers are selectable lockers- they can be switched between open and locked. $spendy, but nice, especially for front ends. The ARB is air operated (requires compressor), the OX is cable actuated, and the elctrac is- you guessed it- electrically actuated by a solenoid. I believe only the ARB is available currently for the D60.
The detroit is always a locker- it will always be locked unless turning and ratcheting. The selectables can be left open until you need them.