What methods are you using - The 1947 - Present Chevrolet & GMC Truck Message Board Network

snacob14 · 08-01-2007, 10:32 PM

to drill the holes correctly in the frame to mount slam RE7's in the original coil spot. What a freakin headache. I have one half way done, but it took me two freakin hours.

pissonNOS · 08-01-2007, 11:29 PM

im assuming you mean in the rear because the front plates should have already been done. in the rear I went and bought a hole saw just big enough so i could get the fitting through, then just ised a good quality bit for the3 other 2 mounting holes. I think i had all 6 holes drilled in less than half hour

67Fleet · 08-02-2007, 04:29 PM

I had the same problem drilling my holes for the bag port. The hole is a 1" size. I went through 2 Unibits. But I was drilling through the CPP bolt-in cnotch, the frame, and the stock backing plate. It was a total PITA.

Frizzle Fry · 08-02-2007, 05:00 PM

Quote:

Originally Posted by pissonNOS

im assuming you mean in the rear because the front plates should have already been done. in the rear I went and bought a hole saw just big enough so i could get the fitting through, then just ised a good quality bit for the3 other 2 mounting holes. I think i had all 6 holes drilled in less than half hour

holesaw for the fitting hole.

randomhero472 · 08-02-2007, 06:39 PM

holesaw... or if you have the access/resources get your hands on a plasma cutter, you can rent them from equiment rental shops, you could have all 6 holes done in about 2 minutes..

SCOTI · 08-02-2007, 06:58 PM

Carbide 'burring' bit & high quality drill bits. I used drill bits stepping up to 13/16" & then opened up the hole as needed w/the carbide burring bit. Took about 15mins ea. side.

Many suggest the hole saw method but I used one on a hole I was drilling on the top side of the shock crossmember. Standing above the work, soaking the hole w/cutting fluid, & being able to use most of my body for support, it still took 5~10mins of solid drilling (about 25mins stopping to limit heat soak on the bit) & this was only 1/8" thick single wall mild-steel. I can't imagine lying on your back, pushing up w/only your upper body for force, & trying to drill through almost 1" thick steel (frame + frame support + c-notch support + shock crossmember support).

The carbide burring bit made quick work of it. I bought an 8pc kit for about $150 but now I have them for other jobs (I could have just bought one bit for the job).

Frizzle Fry · 08-02-2007, 07:16 PM

Not all holesaws are created equally. Trust me on this one. But, there's more than one way to get er done.

SCOTI · 08-02-2007, 09:05 PM

Quote:

Originally Posted by Frizzle Fry

Not all holesaws are created equally. Trust me on this one.

This was my assumption as well. At the time though, Home Depot was my only source for the hole saw so that's what I had to go with. After going through the BS I went through w/the holes I did on the top side..... I knew I had to seek an alternative method.

randomhero472 · 08-02-2007, 09:41 PM

You could also you a torch to punch a hole, then clean it up w/a uni bit and grinder

pissonNOS · 08-02-2007, 10:36 PM

Quote:

Originally Posted by Frizzle Fry

Not all holesaws are created equally. Trust me on this one. But, there's more than one way to get er done.

definately going to have to agree on that I tried used ones then cheap ones then finally broke down and bought a good one and I was thru in no time

08-01-2007, 10:32 PM	#1
snacob14 Registered User Join Date: Oct 2006 Location: Desoto, MO Posts: 225	What methods are you using to drill the holes correctly in the frame to mount slam RE7's in the original coil spot. What a freakin headache. I have one half way done, but it took me two freakin hours.

08-01-2007, 11:29 PM	#2
pissonNOS senior member Join Date: Feb 2003 Location: fort macleod alberta Posts: 2,770	Re: What methods are you using im assuming you mean in the rear because the front plates should have already been done. in the rear I went and bought a hole saw just big enough so i could get the fitting through, then just ised a good quality bit for the3 other 2 mounting holes. I think i had all 6 holes drilled in less than half hour __________________ 69 GMC bagged

08-02-2007, 04:29 PM	#3
67Fleet Outlandish Trends - FL Join Date: Jul 2005 Location: Orlando Posts: 1,396	Re: What methods are you using I had the same problem drilling my holes for the bag port. The hole is a 1" size. I went through 2 Unibits. But I was drilling through the CPP bolt-in cnotch, the frame, and the stock backing plate. It was a total PITA. __________________ -Bret 67 short-fleet sold!

08-02-2007, 06:39 PM	#5
randomhero472 Registered User Join Date: Feb 2006 Location: oklahoma Posts: 516	Re: What methods are you using holesaw... or if you have the access/resources get your hands on a plasma cutter, you can rent them from equiment rental shops, you could have all 6 holes done in about 2 minutes.. __________________ 67' in the "build" process.. soon to be bagged, big wheels ect, finally got it back home!!

08-02-2007, 06:58 PM	#6
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,939	Re: What methods are you using Carbide 'burring' bit & high quality drill bits. I used drill bits stepping up to 13/16" & then opened up the hole as needed w/the carbide burring bit. Took about 15mins ea. side. Many suggest the hole saw method but I used one on a hole I was drilling on the top side of the shock crossmember. Standing above the work, soaking the hole w/cutting fluid, & being able to use most of my body for support, it still took 5~10mins of solid drilling (about 25mins stopping to limit heat soak on the bit) & this was only 1/8" thick single wall mild-steel. I can't imagine lying on your back, pushing up w/only your upper body for force, & trying to drill through almost 1" thick steel (frame + frame support + c-notch support + shock crossmember support). The carbide burring bit made quick work of it. I bought an 8pc kit for about $150 but now I have them for other jobs (I could have just bought one bit for the job). __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

08-02-2007, 07:16 PM	#7
Frizzle Fry Registered User Join Date: Aug 2005 Location: Hillsboro Oregon Posts: 6,449	Re: What methods are you using Not all holesaws are created equally. Trust me on this one. But, there's more than one way to get er done.

08-02-2007, 09:41 PM	#9
randomhero472 Registered User Join Date: Feb 2006 Location: oklahoma Posts: 516	Re: What methods are you using You could also you a torch to punch a hole, then clean it up w/a uni bit and grinder __________________ 67' in the "build" process.. soon to be bagged, big wheels ect, finally got it back home!!



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