Project Truck For 17 Year Old Son

[dodge man]

Its a good looking truck and your son looks like he is doing well. Nothing wrong with spoiling your children, we bought both of our kids their first cars.

 

[jejeosborne]

Be sure you really want the Flowmaster 40s. I like mine but for the cabin drone at certain RPM, especially when pulling a grade.

I wouldn't want it for sure. I tout my whisper quiet ecoboost often. He will live and learn and I actually had to talk him out of straight pipes. Lol

 

[jejeosborne]

Its a good looking truck and your son looks like he is doing well. Nothing wrong with spoiling your children, we bought both of our kids their first cars.

My daughter had a nice tricked out wrangler in high school and now is driving a toyota avalon with 180,000 miles on it back and forth to college. She wants a utility vehicle but college parking lots and her old avalon are meant to be together. I owe her a new vehicle for graduation as promised for getting a full scolastic ride to college. My son would be in a vehicle half this expensive if not for the accident. Very happy to have him around and he is still going through a lot of suffering.

 

[MoKelly]

This is just fantastic. Good luck on the project and I think you are doing the right thing. Time is precious.

MoKelly

 

[jejeosborne]

Phase 1 complete. Stereo head and exhaust done today. We have to finish the amp and subwoofers tomorrow. Flowmaster 40's are not as load as I expected. Good balance. Highway speed had no drone and was quiet.

https://youtu.be/DNWCaKCZOxM

 

[RobertN]

Here's my free 2 cents

Anything over 33's with stock gears is gonna be gutless. If he wants to run 35's, you should be looking at 4:11's minimum, 4:56 would be better. you can find on-line calculators for what gears are necessary versus tire diameter to keep a reasonable final gear ratio. If he wants to take it off-road, might even want lower gearing.
Gear Ratio Calculator

12" rim would be ok for 14" wide tires. If he runs 12.50 tires, stick with a narrower rim. Even 10" is a bit wide fore a 12.50 tire, unless he wants curb rash...

Even with just 35's, your going to notice diminished braking. It takes more to slow that larger, heavier mass rotating mass.

You'll need a programmer to correct the speedometer most likely.

It's awesome to build a truck. Done right, it is amazing how much it costs. Tires, rims, lift, gear correction(ring/pinion, maybe lockers). And you aint even made it off road yet

 

[jejeosborne]

Here's my free 2 cents

Anything over 33's with stock gears is gonna be gutless. If he wants to run 35's, you should be looking at 4:11's minimum, 4:56 would be better. you can find on-line calculators for what gears are necessary versus tire diameter to keep a reasonable final gear ratio. If he wants to take it off-road, might even want lower gearing.
Gear Ratio Calculator

12" rim would be ok for 14" wide tires. If he runs 12.50 tires, stick with a narrower rim. Even 10" is a bit wide fore a 12.50 tire, unless he wants curb rash...

Even with just 35's, your going to notice diminished braking. It takes more to slow that larger, heavier mass rotating mass.

You'll need a programmer to correct the speedometer most likely.

It's awesome to build a truck. Done right, it is amazing how much it costs. Tires, rims, lift, gear correction(ring/pinion, maybe lockers). And you aint even made it off road yet

Thanks for your input. This truck will not see much off road action. Hopefully none. We have motorcycles for that. This will be a road queen. He understands the lower torque he will be getting. From a dad's perspective that is fine with me. I thought with the 3.73's we should be fine with up to a 35 inch tire so I would like to hear others opions as well. If churning thick mud I can understand but for a payment pounder....?

I used your calculator backwards and with 35 inch tires, his new ratio is 3.42 and 3.63 with 33's.

I know they make an inline mph converter for the F250s and will have to check on the F150s. You just clip a wire or two and put it inline under the dash.

 

[Diamondpilot]

Thanks for your input. This truck will not see much off road action. Hopefully none. We have motorcycles for that. This will be a road queen. He understands the lower torque he will be getting. From a dad's perspective that is fine with me. I thought with the 3.73's we should be fine with up to a 35 inch tire so I would like to hear others opions as well. If churning thick mud I can understand but for a payment pounder....? I used your calculator backwards and with 35 inch tires, his new ratio is 3.42 and 3.63 with 33's. I know they make an inline mph converter for the F250s and will have to check on the F150s. You just clip a wire or two and put it inline under the dash.

What size does it have factory? My guess is the tires on it are in the 31" range.

33 and 35's are just not that big to today's standards. I bet your Eco Boost has the same size as mine which works out to about 32" tires.

Chris

 

[downsizingnow48]

That nice black truck crying out to be lowered 2 inches and use nascar style black wheels!

 

[aczlan]

I know they make an inline mph converter for the F250s and will have to check on the F150s. You just clip a wire or two and put it inline under the dash.

Dakota Digital makes (or used to make) one, you tell it that x pulses in should equal y pulses out and it "corrects" the speed.
Pricewise it might make sense to see if the size you chose matches a stock tire size. If so, the dealer might be able to reflash the ECU to match the new tires (see: http://www.f150forum.com/f38/dealers-ids-tire-reflash-2011-a-135091/ for some info on the newer trucks)

Aaron Z