Chase Duprey

Could be a dumb question(probably is) but I have a 2011 2wd 3.7L V6 Flex fuel and I have it leveled and 33" tires and my acceleration off the line is awful, I'd almost have to redline it to keep up with normal cars when taking off from a red light. So, my question is that if I find a donor truck or just an engine in general, would it be worth it or even possible to drop a 5.0 in to replace my 3.7. Also, any suggestions on ways to avoid a swap and just get more low end torque would be helpful too, trying to avoid gears as well.

JB 1 TIME

I was just going to say new gears until i got to the end of your post. Why are you against gears, but will consider a complete motor swap? What gear ratio are you running now?

Chase Duprey

I have the stock 3.55 in right now and honestly I'm not totally against gears but buddy's of mine have been telling me that gears would be a waste of time unless I go with a lift and bigger tires which I agree with but I would never see the 3.7L v6 handling that setup well but that's I'm looking for more opinions

JB 1 TIME

Why would it be a waste of time? That doesn't make any sense? And I do not recommend going with a lift with 3.7L.

paintballdude05

4.10's might be a nice option for you. The engine swap is possible for sure, going from a 3.7 to a 5.0 is probably the easiest engine to swap to. But in the end it's probably "cheaper" to trade your truck in on a truck with a 5.0 already.

Tothemax

Gear swap would be much easier.

TJPlatinumEB

I was stuck in a similar situation, but I already had a 5.0L Ford.

I had a 1992 Bronco with about 175k miles and I put a small lift on it with 33" tires. It could barely get out of its own way once I did that. Mileage tanked and it just didn't work how I wanted it to.

It had 3.73 gears in both differentials. I had 4.56 gears put in both front and rear and drove that truck to well over 200k miles before finally selling it. I should have done the gears even before the lift just due to how little power that old 5.0 made with that heavy truck. Would have made a huge difference either way.

WhySoFishy

If your going to swap in a V8, don't go with the smaller V8. Get the 6.2l, it is a simpler engine and cast iron. More difficult to break anything when installing it. Not 100% sure on pricing but IIRC new they're actually cheaper than the 5.0, not used about the used market, and I think the Super Duty 6.2 is a little bit different than the F150 6.2, so I'd stay away from those. My 6.2 with 3.73's flies, even with 34.5's.

JLTD

Gears aren't a waste of time - you've already put on larger-than-stock tires. You can overcome the extra effort required by putting in a more powerful engine, or by giving your current engine a mechanical advantage with a lower gearset. You could even go past 4.10s if you wanted, but there would be a proportional increase in rpm on the highway. It's all about how you want to do it. Changing gears is a MUCH simpler process and is less expensive.

GrasslandHVAC

If you have a 2wd only then swap gears, you only have one dif. Far cheaper than engine swap.
I have 3.73 gears in my 3.7 supercab 4x4 and I run 700-800lbs of weight in it every day, and once I tuned it to fix the throttle lag and lazy shifting the truck is more than adequate.

Your factory tire was a 30lb P235/75/17 most likely and if you are on 33s you gained 2 inches of diameter plus an easy 15 lbs per tire. I would regear to 4.11 and get a tuner to correct tire size calibration and shift points.