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Old 06-29-2017, 09:24 PM   #3
JL8Jeff
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Join Date: Aug 2004
Location: Ewing
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It has one of the white cams but I'm not sure which one. I think the arm was misadjusted and was too tight which may have allowed fuel to drip out at idle. I read that the 600 should have the .031 squirter stock and it has a .025 which is pretty small. I found the baseplate gasket was the wrong one and it's too small and sticking into the carb so I replaced that. I put the 72 jets in today and I'm waiting on the squirters to try them. But I can't run the motor at the house, I need to put the jet drive in the water so it doesn't burn up the new cutlass bearing. I need the muffler inserts before I will run it at the ramp again. The secondary metering plate was the 34R 9716B with a 6 stamped into it and that looks like it's equal to 69 rear jets so that might not be too bad for now. The jet drive will limit the rpm's the motor can actually use so I think the 600 should work. It should be fun getting this dialed in.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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