Blue Ox
Turning Diesel Fuel Into Fun
- Joined
- Mar 27, 2018
- Posts
- 5,218
- Reaction score
- 12,013
- Location
- LI-NY
- First Name
- Derek
- Truck Year
- MCMLXXXV
- Truck Model
- K20HD
- Engine Size
- 6.2L
It's no big block, but set up properly they're not as anemic as all that. They do have some weaknesses, it depends on the vintage. Some of the earlier ones were prone to block cracking. However, the later editions were a little stouter.
The J engines were the better option. The big difference was no EGR, and a different pump calibration. So you can retune one if you want to put a few $$$ into them.
Speaking of pumps, the timing advances wear out by the 100K mile mark. That tends to make them doggy.
Definitely agree you should try to drive them just to understand what you can expect. One thing I will state; You're not going to find a better sounding diesel.
The J engines were the better option. The big difference was no EGR, and a different pump calibration. So you can retune one if you want to put a few $$$ into them.
Speaking of pumps, the timing advances wear out by the 100K mile mark. That tends to make them doggy.
Definitely agree you should try to drive them just to understand what you can expect. One thing I will state; You're not going to find a better sounding diesel.