If you had a 48,engine mounts make 41 Buick compound carburetion difficult to install. With your 47,putting compound carburetion would be a breeze,ALL BUICK and neat. (maybe you could be included in the registry?)
All oils are NOT the same. A gentleman with the most perfect 54 I have seen since they were new,lost TWO camshafts one right after the other,and with a NAME BRAND oil (which will remain nameless at this time). He was disturbed to say the least! I explained to him that zinc-dialkyl-dithiophosphate additive in oil protected the camshaft,and now and then a supplier "cheated"and told him this doesn't happen with my favorite brand.He switched to Valvoline and no more camshaft problem.
A later model updraft from a COE truck or even a farm tractor makes a good "driver" carburetor. I have a NOS on hand. Used one on my 23 Buick to replace the old pot-metal unit and it worked perfectly.Zenith and Carter made VERY GOOD updraft carburetors
Have sold well over 200 ,one wire alternators. If you can belt up a one wire unit,hook the two large leads(from the regulator) together, use The big lead,(which was the "A" lead to the generator) to the one post on the alternator , and GO!
I have sold well over 200 6 volt alternators with good results. Better lights,no maintinance,less than 1 percent failure rate. This with a good headlight relay will optimize 6 volt operation.
I did it by putting a 53 frame under it. Not as hard as you might think. Had to use 53 tie-rod (longer)and I put 6 volt field coils in a 53 V8 starter and kept 6 volts.Be sure the 53 frame is for that body (big 4 drs were longer than 2 drs)
When I mentioned it could be the vent, I should have mentioned one more thing. WATER in the transmission ! A leaking cooler will put water into your unit. The oil temperature can greatly exceed the boiling point of water,so steam will cause overflow also. To emphasize a point I mentioned earlier, If you find a Buick that has had an underhood fire,could have been a belching filler tube. Working on Dynaflows since 1947 (in Flint).Ralph Crisp BCA 2399
I was of the same mind a few years ago.Sold a dozen or so,down to my dream car ,a 41 Super and have to sell it as I can no longer drive it. I hope someone who appreciates a GOOD car comes along to rescue it !1
I have about 50 "Rochester" kits which are for Rochester,Carter and Stromberg.but have no catalogue listing.If you can tell me the part number,I may have one.If you feel like gambling,I will sell you the whole works for $3 per kit.These were bought at a Buick-Rambler dealer sell-out