- Joined
- Aug 3, 2010
- Posts
- 30,439
- Reaction score
- 28,345
- Location
- Usually not in Ohio
- First Name
- Andy
- Truck Year
- '77, '78, '79, '84, '88
- Truck Model
- K5 thru K30
- Engine Size
- 350-454
I see a lot of people on here saying not to do a Square for this project. I tow a 9,000 lb travel trailer with my 1985 C30 non dually, if you keep it running well it will serve you well. You can spend less than 10k on a good truck with no rust and less than another 5k on an upgraded trans cooler, trans rebuild, new tires, brakes, and a few upgrades for the 454. I could not and still cannot buy a modern 3/4 or 1 ton for towing for less than 25k leaving me another 10k to perfect my truck. Plus, every dollar I spend on upgrading my square will be reaped if I have to sell it. Not to mention the Mark IV 454 / TH400 combo is bombproof with the exception of the timing gear. I don't know for which years this applies but for my 1985 the camshaft timing gear was aluminum and nylon and when the gears get ground down enough you end up with interference and catastrophic failure. Do your self a favor and check the timing gears.
Speaking from experience, the cam gear fails and you only waste 8 pushrods, lol. But it's a great excuse to upgrade from 5/16" to 3/8" pushrods.