I like that you tied it into the frame rails in the pictures in your last posts. The original design and initial setup is pretty much just tied into the rear crossmember/bumper support. Even though those 4 bolt holes can bolt up an OEM pintle hitch or receiver I wouldn't trust it. IMHO, its a Class 1 receiver from the factory. Many people applauded your efforts initially, but remember your just tying into the rear bumper/crossmember support and not the heavier gauge metal frame rails.
The Class 3 receivers that are on most 80's are made up of a much heavier steal and tie into the frame with 6-8 even more bolts.
Just wanted to post here and Applaud you for adding more support and maybe educate a few and tell a little story of My bumper experience.
Dumb Redneck move by Mikesta.
- Free 10,000 lb forklift
- 1978 Ford F150 (1/2 ton or 3/4 ton truck)
- 2000lb trailer
- 10'000 lb rated straps (not chains)
- Bumper 2" ball (ATTENTION HERE)
- Shorts / T-shirt in a Pinapple express in November
Quick retrieval of a 10,000lb forklift so didn't dress warm and wanted to be first to get it.
We loaded the forklift with another forllift on the trailer. I drove it 30mph (thats as fast as I could go). I'm loaded down with a truck weighing maybe 2 tons, towing 6, not smart. My hitch was a bumper hitch with a reinforced bumper crossmember to support it (factory). Chains of course.
Red light way up ahead, brake lights getting closer.... tap the brakes... fishtails... 2 options, hit the car in front of me or ditch it. I ditched it. Weight of trailer, forklift jacknife the rig, forklift breaks straps, forklift comes forward, hits front of trailer which rips the ball off the bumper hitch, which cracked the rear cross support welds holding the bumper on. Chains kept the trailer close. Forklift and trailer hit rear quarter panel of truck. Took down a huge highway sign too
I used to be Saefty 3rd. Now its first. It could have been a lot worse than a $690 tow bill... if I was going faster or decided to hit the car or didn't have the option to hit the ditch, my foolishness could have meant someone else's life.
All this to say, there is a reason why aftermarket class 3 hitches are bolted to the frame (even on older trucks built with better steel).
If you are going to Mod a Hitch make sure that it follows that protocol and tie it into the frame rails, the rear bumper support is mainly that... a bumper support.
I tell my story of foolishness to hopefully help others understand I have first hand experience and have since done my homework when it comes to hitches.
I'd give yours a 2.5 rating now over the 1 initially, but I'm only experienced, not an expert.
http://www.autoanything.com/towing/how-to-select-the-right-hitch-class.aspx