Hey there G72, I spoke with you in Oakville at the Camaro Nats in 2015. I've got a bunch of pics of your GORGEOUS car. None of your intake manifold setup though. Can you post a few more closer pics of your cooling hose setup. I'm thinking it would be better than just plugging those.
Hey Steemo, how's it going? you got a good memory for remembering that I was there, it was a good time, but I never did get back, I took up auto crossing then my son decided to try it out...well, that's how it all started, boy did that escalate quickly LOL.
I remember well, It down poured rain on the Sunday, almost a 600km ride home in the rain, still drove 120kph....found out the car's good in the rain, and glad the heater was all hooked up.....that being said,
Jodi's post is the exact thing I'm using. I do this because I'm on the slightly higher side of the CR limits (10.8) with 91 octane and iron heads. What I found compliments this set up is the additional 7/16th hole in between the center bores, high flow water pump, blocked bypass, and a 1:1 ratio water pump pulley. The deck plugs with the holes also helps, but now the HG have this restricted down, but the deck plugs helps me in the top section of the bores anyways, making 540hp with a stock 1968 2 bolt block does pose it's issues, and if you loose ring seal....well what's the point LOL.
That water neck spacer allows you to use a thermostat as well, and your heater system is not affected negatively by this at all.
Hope this info helps you out Steemo.