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Old 10-16-2006, 08:52 AM
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350 Chevy Engine Surging/Bucking/Jumping

Hey guys,

I just got a 1970 Monte Carlo with the original 350, 2 barrel engine. My question is as I try to move it around in the garage to work on it, it will buck around. I mean I have it in gear and I am barely moving with my foot on the brake and it will surge forward pretty hard if I don't have my foot on the brake. This happens in both forward and reverse. It is a turbo 400 trans and I am not sure if it's the trans or engine. What do you guys think?

Thanks
Dave

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Old 10-16-2006, 09:11 AM
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Sounds like something ignition related, but rather unsure, does the car still have a points ignition?
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Old 10-17-2006, 06:22 AM
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Hi again guys,

To answer the distributor question, right now the car is still running on points.

Thanks Dave
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Old 10-17-2006, 06:29 AM
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Since you are just moving it around the shop, I take it that it is just sitting there most of the time. Chances are the engine is all loaded up, carboned...whatever you want to call it. It probably needs a good tuneup....or a good run down the highway, if thats possible. Pull all the plugs and clean them, check the points for wear and set the dwell at 30 degrees.....To help clear out the carbon, you might want to trickle some water down the carb while at a high idle. This will put alot of carbon out the tailpipe. Wouldn't hurt to clean out the carb also.....they are pretty easy to take apart.
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Old 10-17-2006, 08:28 AM
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Hey guys,

The Monte Carlo is only a 350, 2 barrel car. I just want to make the car street-able for a year or two before I take it off the road for restoration. So I don't want to put a ton into it yet.

I have an old Performer 4 barrel intake, Demon 650 and old GM HEI laying around. Would it make sense to put them on or keep the original set up? I thought the Demon 650 would be too much what are you thoughts?

How would I wire the HEI? I've only replaced an HEI I haven't done it from scratch.

Thanks
Dave
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Old 10-17-2006, 08:48 AM
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For the HEI you need 12 volts. The wire from your harness to the coil now puts out 7 volts, because it is a resister wire. You have to cut it back aways and replace it with regular wire. This will give you 12 volts, which goes to the connection on the cap....
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Old 10-17-2006, 09:07 AM
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So are you saying that making the swap would be a good move?

Also, I don't mind to sound stupid but just never hooked up an HEI. But what you mean is to locate a switched 12 volt hot and run it to the HEI? Am I making it too hard?

Thanks Dave
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