Front Bumper Brackets - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Thadious · 07-22-2009, 10:18 PM

I've just managed to zip cut my front bumper brackets to the lenght I need to bracket them to the front of the frame for my S10 swap. I need to open up the rivet hole and create one more. I'm guess by the pain to drill through them that they are hardened steel...

Has anyone had luck annealing them so they can be worked?

Even so, have they re-hardened and tempered them to the (somewhat) original toughness? If so, what temps?

Cheers,
Ted.

**mr48chev** · 07-23-2009, 02:14 PM

I believe the brackets may be spring steel. You may be able to find a better drill bit that will work on the harder stuff.

If you can find someone who sells Lawson brand bolts and drill bits, their good drill bits have done a good job up against anything I have put them up against.

The other option may be to mark them and take them to a machine shop where they can use a milling machine to cut the holes. Not the cheapest way but it may save you a lot of time.

07-22-2009, 10:18 PM	#1
Thadious Registered User Join Date: Sep 2008 Location: Creston, BC Canada Posts: 369	Front Bumper Brackets I've just managed to zip cut my front bumper brackets to the lenght I need to bracket them to the front of the frame for my S10 swap. I need to open up the rivet hole and create one more. I'm guess by the pain to drill through them that they are hardened steel... Has anyone had luck annealing them so they can be worked? Even so, have they re-hardened and tempered them to the (somewhat) original toughness? If so, what temps? Cheers, Ted. __________________ '51 Chevy Build - In the design stages Aut viam inveniam aut faciam - I will either find a way or make one. If you don't have time to do it right the first time, when will you... My new build - https://67-72chevytrucks.com/vboard/...70#post8958970

07-23-2009, 02:14 PM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,711	Re: Front Bumper Brackets I believe the brackets may be spring steel. You may be able to find a better drill bit that will work on the harder stuff. If you can find someone who sells Lawson brand bolts and drill bits, their good drill bits have done a good job up against anything I have put them up against. The other option may be to mark them and take them to a machine shop where they can use a milling machine to cut the holes. Not the cheapest way but it may save you a lot of time.

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