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Old 01-05-2013, 05:18 PM   #1
JonCheun
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Join Date: Jan 2013
Location: Las Vegas,NV
Posts: 59
Exclamation 68 won't go passed 60mph

I have a 1968 C10 Stepside w/ a 350 crate engine that has 15000 miles and gear vendor overdrive. I just put a new Holley manual choke 2 barrel carb on it. Yesterday I was on the interstate and when I got up to 65mph it would hold but then start to jerk and go down to 55mph then to 50mph. It runs fine when I am on surface streets and going only up to 45mph but once I go to 60mph it starts to do it again. Today, I'm going to change the spark plugs.

Anyone Have any ideas or have experienced this same problem.

-Jon Cheun
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