OldRigNewParts
New member
#FromMASStoo. A well cared for motor is good for well over 300k no problem, 400-500K is doable. My current 3rd gen, I bought with 1 quart of oil in it from a jackass (low oil switch wire was broken off), and it was running a long time with suuuuuper low oil with 139K on the clock. I filled it up and drove it 30K more. It was ok at 1st to my amazement, then it started to use like a quart a day. I dropped motor from a rust bucket scrapper with 112K, bought it for $1,200 had a guy install it for $500 (which is way super low, its 20 hr book time), I'm at 235K on that motor now, runs good.
I do about 1K highway miles a week. I have good luck with wreck motor swaps, Tacoma also. Only needed to swap cause of idiot abuse factors, like radiator completely empty. I tried a used 3rd gen auto trans swap on my last rig, it only lasted me about 3 months, I won't do that again, just rebuild. I scrapped that rig at 330K, original good running motor with blown auto trans.
Motors are worth the swap. I think there are enough good motors around in the rust belt that it makes sense looking for a good low mileage swap. (I like to see it in the car running with verified mileage with digital odometer, or paperwork to verify analog clock before I commit) Its cheaper than a motor rebuild, and quicker unless you rebuild another donor motor while you're still driving your rig. The 3rd gen motors are legendary.
My current 3rd gen has a 5 speed and the 1st/2nd syncro is getting crunchy with 280K, So I'm swapping it out with a scrapper I just bought that I drove 90 miles to test. I'll keep the old 5 speed transmission for a rebuild.
I guess that my hesitation about buying a donor motor, you never know what it's been through. I know exactly how this truck has been used since new because it belonged to a close family friend who babied it all the way to 190k and most of that was highway miles. Even though it might cost more to rebuild the motor, I would be much more comfortable doing that than only having an idea of what I'd be getting in a donor motor.