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Old 03-28-2011, 01:57 AM   #104
Corts60
Just here to tinker
 
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Join Date: Jun 2008
Location: Holland, MI
Posts: 3,672
Re: '60 GMC Suburban (Project D-Daddy)

Drove it on the freeway tonight. The engine cruises at a way lower rpm than my truck did. My truck had 3.90's and a SM-318 and the rpm's were around 3000 @ 60 mph.. I'm not sure what the axle is in this but I know the tranny is an SM-420. I don't have a tach but from the sound I would guess she was at about 2200 or so rpm's at that speed. I love it.

She did great though. Here is a pic after I got the license lamp wired up before I took off.

Last edited by Corts60; 03-28-2011 at 01:59 AM.
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