57 GMC cluster question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kgmunro · 01-20-2011, 08:02 AM

I don't have my cluster where I can measure it..so can anyone with a gmc tell me what size speedo guage will fit in the factory dash bezel opening? I am looking at buying autometer guages. Also the small guage holes please.

SHORTDOG99 · 01-21-2011, 03:18 PM

I believe the big ones are 4" and the little ones are 2 1/4"

meter swinger · 01-23-2011, 10:15 PM

i have a leftover set in my garage from a 56. the big hole is 3 & 3/4 and the small one is 2 & 3/16 at the front. the holes have a 1/16" lip on in the back (i.e the hole is bigger in the back by 1/8") that matches the gauges and locks them in.
hope that helps.

01-20-2011, 08:02 AM	#1
kgmunro Registered User Join Date: May 2009 Location: Brandon Manitoba Canada Posts: 342	57 GMC cluster question I don't have my cluster where I can measure it..so can anyone with a gmc tell me what size speedo guage will fit in the factory dash bezel opening? I am looking at buying autometer guages. Also the small guage holes please.

01-21-2011, 03:18 PM	#2
SHORTDOG99 Registered User Join Date: Nov 2010 Location: Ontario, California Posts: 124	Re: 57 GMC cluster question I believe the big ones are 4" and the little ones are 2 1/4"

01-23-2011, 10:15 PM	#3
meter swinger Registered User Join Date: Apr 2009 Location: Kennewick WA. Posts: 1,437	Re: 57 GMC cluster question i have a leftover set in my garage from a 56. the big hole is 3 & 3/4 and the small one is 2 & 3/16 at the front. the holes have a 1/16" lip on in the back (i.e the hole is bigger in the back by 1/8") that matches the gauges and locks them in. hope that helps.



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