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**71CHEVYSHORTBED402** · 10-03-2018, 08:57 PM

Just simple this and that's on my truck of late...... I'm trying to wrap up a landscape job.

Finally installed my harmonic and timing cover. Oil pan due any day

now, and my rear suspension is pending me for powder coat. So yeah, awfully short on assembly so far.

I picked up new shackles for the rear leaf springs. The shackles were a bit scraped up, so I used Eastwood's "phosphate paint" and etch primer I picked up for the bench seat brackets.

If it holds up I'll be happy as a clam. It's very close to phosphate coating, even for the trained eye. Nearly feels like phosphate. Traces of "bling" as well, but the pics didn't pick it up.

On a side, somehow I thought the parts on these trucks were primarily Manganese phosphate. That's wrong. Per this website, they're Zinc phosphate. http://429mustangcougarinfo.50megs.com/new_page_26.htm

I should probably check this stuff out before I go painting

Per this website, zinc phosphate makes for a nice under surface for powder coat. Strikes me that would apply to paints as well. Time will tell. https://www.pfonline.com/articles/zi...s-zinc-plating

The first website reads zinc phosphate is phosphate and oil ON TOP of a zinc base plating. Yet the second website reads zinc plating is more resistant to corrosion than zinc phosphate

Hmmmmmmmmmmmm.

10-03-2018, 08:57 PM	#95
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,120	Re: Build that 71 402 already Just simple this and that's on my truck of late...... I'm trying to wrap up a landscape job. Finally installed my harmonic and timing cover. Oil pan due any day now, and my rear suspension is pending me for powder coat. So yeah, awfully short on assembly so far. I picked up new shackles for the rear leaf springs. The shackles were a bit scraped up, so I used Eastwood's "phosphate paint" and etch primer I picked up for the bench seat brackets. If it holds up I'll be happy as a clam. It's very close to phosphate coating, even for the trained eye. Nearly feels like phosphate. Traces of "bling" as well, but the pics didn't pick it up. On a side, somehow I thought the parts on these trucks were primarily Manganese phosphate. That's wrong. Per this website, they're Zinc phosphate. http://429mustangcougarinfo.50megs.com/new_page_26.htm I should probably check this stuff out before I go painting Per this website, zinc phosphate makes for a nice under surface for powder coat. Strikes me that would apply to paints as well. Time will tell. https://www.pfonline.com/articles/zi...s-zinc-plating The first website reads zinc phosphate is phosphate and oil ON TOP of a zinc base plating. Yet the second website reads zinc plating is more resistant to corrosion than zinc phosphate Hmmmmmmmmmmmm. Attached Images __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 10-03-2018 at 10:42 PM.