Hey Verne - any updates on this? Just curious.

The last I heard was that he was in contact with another shop that specializes in racing engines. He planned to take the rotating mass parts to them for evaluation and balancing.
He sent me the carb and its done and he has it back. I found a lot of the settings were off, but not enough to cause a lean condition. I did find a partial blockage in one of the primary venturis which might explain why the idle mixture screws had such different settings. I also found an incorrect PCV valve which I replaced with a correct NOS one. I sent along an installation procedure I had written up which details the correct installation and final adjustments needed after its running.

I'll reach out out him and find out where things stand now.


Verne

Over on the NCRS boards DUKE WILLIAMS - states the following regarding older 327's
"The connecting rods are weak and should be replaced. The Eagle SIR 5700 is a good choice and a set is only about $250. It's the least expensive insurance policy you will ever buy."

If the rods were "massaged" I hope they were mgnafluxed.

I would check the wires and cap, were they installed correctly with the firing order or was there a crossfire from one wire to another. Also was the engine balanced, possibly show some pics of the balancer and flywheel. Could be externally balanced parts? Just looking for any possible cause.

I'm still waiting to hear back from him. I know he said it ran as smooth as glass at idle, so I don't suspect any ignition problems. The vibration started at about 1500rpm.



Verne

The vibration IMO isnt an ignition issue with his 327 engine. As i stated a couple of months ago it has to be in the rotating assembly. Anytime you rebuild an older engine, new rods should be purchased. The time and money to size, magged the rods and check for straightness that money could be spent towards some good Eagle rods or Manley rods. But IMO if you have a good used Muscle car engine numbers matching, IMO i would keep as much of the original parts as i could. Just me. But if you run a street and strip engine, new components should be used.

That's all good advice and I'm well aware of the limitations of the stock rods. However knowing how his car will be used, I see no harm to keeping the original rods, as long as no one has muffed them up.


Verne

Nothing wrong with using the later small journal rods for street and some strip use as long as new ARP or other quality rod bolts are used.

Hey Verne, Take that motor to Pete's Automotive.

I think he lives in CT.


Verne