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01-22-2013, 11:56 PM | #1 |
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Join Date: Jul 2012
Location: St. John, Washington
Posts: 618
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Best way to cut for AC Vents?
Ive searched and really have not found a good way to get the correct hole for the factory AC Vents. I already have grafted in an AC firewall. I dont have a donor truck to take templates off of, so at the moment i am sitting with the factory ac vents, and a dash with no holes. Thanks in advance.
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"Rusty" 1972 K20 Cheyenne Super, 496, A/C, Tilt, Tach, Buckets, 4l80e/NP205, 4" Rancho Lift, 35" BFG AT "Ramp Truck" 1972 C30 Ramp Truck 350, Air Bags, Factory A/C. "1968" C10 Shortbed project |
01-23-2013, 08:09 AM | #2 |
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Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,165
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Re: Best way to cut for AC Vents?
Measure 2-3 times cut once.
I used a drill then a jigsaw.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
01-23-2013, 08:35 AM | #3 |
Quit if it's not FUN!!!
Join Date: Jul 2010
Location: Indian Trail, N.C,
Posts: 864
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Re: Best way to cut for AC Vents?
http://www.vintageair.com/INSTRUCTIO...0A%2012.15.pdf. Go to pg. 23. Hope that helps.
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01-23-2013, 09:27 AM | #4 |
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Join Date: Jan 2013
Location: Mickleton, NJ
Posts: 1,776
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Re: Best way to cut for AC Vents?
I used a holesaw for the round vents and a drill and a dremel with cut off wheel for the center. I cut them small and then ground them with the dremel to get them to size.
Mine are repro parts from Classic Auto Air. The install manual for the system has a template for the center: http://www.classicautoair.com/?q=67_..._Chevy_AC.html
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Shawn 1970 Chevy C-10 SWB, 350, TKO 600 5 speed My build http://67-72chevytrucks.com/vboard/s...d.php?t=559881 |
01-23-2013, 10:57 AM | #5 |
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Join Date: Feb 2006
Location: Smyrna, Ga
Posts: 1,647
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Re: Best way to cut for AC Vents?
I tried several options when i did mine and found the best thing to do is layout the hole location and scribe the circle on the dash panel. then drill a hole inside the circle and use a pnematic air saw cut the circle out. You probably wont be able to cut the entire circle at once, but you can cut peices out at a time. When you get close to your scribed mark, use a grinder like mentioned above to get to you final hole size.
I bought a hole saw for this, but it kept jumping and grabbing chipping the paint. |
01-23-2013, 11:06 AM | #6 | |
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Join Date: Jan 2013
Location: Mickleton, NJ
Posts: 1,776
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Re: Best way to cut for AC Vents?
Quote:
Did it last weekend, so its still fresh in my mind.
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Shawn 1970 Chevy C-10 SWB, 350, TKO 600 5 speed My build http://67-72chevytrucks.com/vboard/s...d.php?t=559881 |
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