C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Aug 12, 2015 | 08:23 PM
  #21  
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upnorth
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From: springstead wi
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OK got the carb on and running but no real tune on it yet , but seems to run pretty good didn't seem to lag at all at least 0 to 70 mph . bought a vacuum gauge only place I could get it to read at idle was on the pvc line ( it would go up on the other line but had to rev it up ) didn't put it on the booster line .at 700 rpm it was at 6 inch , at 1000 at 10 inch , and at 1500 just over15 inch .after running for a while I turned on the lights they took a bit but came up at idle but wont go back down even pulling the line off with the engine off .
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Old Aug 12, 2015 | 08:36 PM
  #22  
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toobroketoretire
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From: Great Plains Iowa
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It takes vacuum at the rear of the actuators to pull the headlights down so pulling the hose off accomplished nothing.
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Old Aug 14, 2015 | 06:36 PM
  #23  
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From: springstead wi
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someone said they may be able to type what type of cam I have by vacuum its at 10 at 1000 rpm . plus now that I have the new carb I cant get my headlights to go down any tricks
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Old Aug 16, 2015 | 09:28 AM
  #24  
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From: springstead wi
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have the headlights working . checked the vacuum on the two ports which said full vacuum and only had 7.5 inches at idle even with the engine reved it wouldn't move the lights with either port . tee'd onto the booster line and everything is working . im thinking with a check valve in the booster and one in the lights it shouldn't cause any problems for the booster right ! also any idea on the cam size?
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