IMO you are giving up braking power with the percentage split you have.
disc/ disc proportioning valve are closer to 50/50.
This might help explain some issues...
https://prestone.com/product/prestone-flush-n-fill-kit/
Try this kit , easy to install works good.
l would drain what antifreeze l can, then instead of cutting hose l use a short spare
piece of heater hose , attach garden hose and run till water is clear. Pulling plugs on side of block helps...
https://www.nastyz28.com/camaro/tuneup.html#80tune
On the link, you can see what your distributor spec were and adjust to your liking
Having install vortec heads on an 1980 Z , l bumped my initial timing to 10 degrees before
with 22 degrees curve in the distributor all in by 1500 rpm. the...
Chili is one of my favorite food, this recipe is close to how l make it.
l have found that after getting everything mixed up and cooking. l put my pot of
chili in the oven for the rest of the cooking it need. Never burns on the bottom of the pot
l set my oven for 350 degrees, cooking for one to...
I always used a moroso 26200 distributor hold down clamp on my stockcar
never had a problem with timing moving
https://www.moroso.com/distributor-hold-down-clamp26200/
I used MS98000T on my vortec build. They were recommended on here by quite a few people.
The gasket are at least five years old with no problem. When l bought the gasket set, it came with only one valve cover gasket, now has two valve cover gasket.
If you have parts that are year specific , like 1970 floor mounted gas pedal and sell for profit, list it
as long term capital gain, it will be taxed at a lower rate because you have owned it over a year.
Tom3 examples , could be listed as long term capital losses.
Here is some good reading for ya , this guy Lars is, wait for it , legendary. Lol
http://corvette-restoration.com/wp-content/uploads/technical_papers/Vac_Adv_Spec.pdf