What's your YouTube name, if you don't mine me asking. I'll be posting more videos soon with my son as well.I had a torment that I ran on 3s for a long time and I never had heat issues after I got it geared. 15t pinion was a lot of tweaking and shaving on the transmission. Look for a crawler motor posibly, but I have never ran one in a sc truck I don’t know what would happen. Just make sure it is 3s rated(esc too) get a motor LESS that 3000kv I had a 3000kv and it was a long journey of adjustments and broken parts.
By the way no matter what car you have (in the 10th scale line obviously) without getting a big hunk of motor and battery which will break your car a lot more—with a 540 size motor(common for 1/10 scales)will not normally get you above 45mph with proper gearing. **That’s with 2cell lipo. I currently run 4000kv_70amp esc 3s compatable_4400mah 90c shorty 2s_racing setup
^^BUT^^ one thing I loved about the 3s is RUNTIME I had that 3000kv running during 90° Weather topping out on 120° temps. I loved it I could run for an hour easily on that battery with 1 full charge.
All I have to say is do what you think is the best for you because that’s what I did but you will always have risks. Just have fun with it rc cars a pretty tough. Look for RPM a arms to replace stock.
One question: do you have the metal transmission upgrade?
If you do not: I would probably get one and replace the idler and the other little one with metal but leave the big diff if it’s in good shape. I currently run this set up and a lot of racing vehicles have this and mine hasn’t broken yet and I don’t treat it very nicely considering I do race with it surprising lot it does keep up with the big brands quite well.
Traxxas turnbuckles would be a good upgrade for rigidity instead of the flimsy stock non adjustable links.
But hopefully some of this helped have fun!