The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Can I tap a head for an ac bracket on my 71/SBC 350?

**HO455** · 06-10-2021, 12:59 PM

I wouldn't chance it. Too many variables the material thickness, getting the hole straight, having the bracket sit square on the head and not twist when the bolts are tightened . The odds of success aren't good and would get worse over time.
I believe that vibration over time would lead to problems. I suggest looking for a stock bracket like this to modify.
Props to Bigdav160 for the photo.

06-10-2021, 12:59 PM	#9
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,833	Re: Can I tap a head for an ac bracket on my 71/SBC 350? I wouldn't chance it. Too many variables the material thickness, getting the hole straight, having the bracket sit square on the head and not twist when the bolts are tightened . The odds of success aren't good and would get worse over time. I believe that vibration over time would lead to problems. I suggest looking for a stock bracket like this to modify. Props to Bigdav160 for the photo. Attached Images __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 Last edited by HO455; 06-10-2021 at 01:34 PM.