Originally Posted by suesiegel (Post 1448651)

A 1963 327 was designed for HIGH TEST LEADED GAS. If, I recall the octane rating was min 92 or was it 98. The lead not only boosted the octane but lubricated the valves. Due to the lead, you burn through an exhaust system every 50,000 miles. You need a tune up every 10,000 miles. My last car, I changed the plugs after 110,000 miles. They were still ok but so long as I had bought new ones gaped them I put the new ones in.



Assuming you do not drive it much, fuel cost is not very important. You might visit one of the air fields and see if they will sell you aviation fuel-not sure if it is legal.



RE: 14 to 1

You likely have a single four barrel carb on that. In 1963 no one cared about pollution. You fuel air mix was and is not constant and it gets leaner in the cylinders located further away from the carburetor

Originally Posted by suesiegel (Post 1448651)

A 1963 327 was designed for HIGH TEST LEADED GAS. If, I recall the octane rating was min 92 or was it 98. The lead not only boosted the octane but lubricated the valves. Due to the lead, you burn through an exhaust system every 50,000 miles. You need a tune up every 10,000 miles. My last car, I changed the plugs after 110,000 miles. They were still ok but so long as I had bought new ones gaped them I put the new ones in.

Assuming you do not drive it much, fuel cost is not very important. You might visit one of the air fields and see if they will sell you aviation fuel-not sure if it is legal.

RE: 14 to 1
You likely have a single four barrel carb on that. In 1963 no one cared about pollution. You fuel air mix was and is not constant and it gets leaner in the cylinders located further away from the carburetor

Originally Posted by Packer Fan (Post 1448612)

As usual it took about 15 posts to get the correct answer. Carl is totally correct. I have an engineering degree and used to buy all the carburetors for a "large lawnmower engine manufacturer" I bought 10 Million carburetors a year, and was involved in Warranty. On cars he is correct. Pure gas will get you better mileage and less problems IN THE LONG RUN. With Carbureted Golf carts, I BEG YOU to use ethenol free gas. Ethanol attracts water, which sits in the carburetor bowls and jets and corrodes them. You are dealing with TINY jets in there, that are finely tuned. The corrosion gets bad enough and starts to break off and clog the jets and then you have problems. Gas will not hold water. 10% ethanol gas will. I have seen THOUSANDS of warrantied Carbs. It ain't pretty folks. The reason we have 10% ethanol is the corn lobby. They want to go to 15% but Honda, Briggs and Stratton, Toro, and all the other lawn guys are screaming because then you will have HUGE warranty issues. You can bury the cost of an $80 EFI unit in a $12,000 golf cart. You can't in a $120 lawnmower with a $5 carburetor.....

Ed

Originally Posted by Packer Fan (Post 1448612)

As usual it took about 15 posts to get the correct answer. Carl is totally correct. I have an engineering degree and used to buy all the carburetors for a "large lawnmower engine manufacturer" I bought 10 Million carburetors a year, and was involved in Warranty. On cars he is correct. Pure gas will get you better mileage and less problems IN THE LONG RUN. With Carbureted Golf carts, I BEG YOU to use ethenol free gas. Ethanol attracts water, which sits in the carburetor bowls and jets and corrodes them. You are dealing with TINY jets in there, that are finely tuned. The corrosion gets bad enough and starts to break off and clog the jets and then you have problems. Gas will not hold water. 10% ethanol gas will. I have seen THOUSANDS of warrantied Carbs. It ain't pretty folks. The reason we have 10% ethanol is the corn lobby. They want to go to 15% but Honda, Briggs and Stratton, Toro, and all the other lawn guys are screaming because then you will have HUGE warranty issues. You can bury the cost of an $80 EFI unit in a $12,000 golf cart. You can't in a $120 lawnmower with a $5 carburetor.....

Ed

Originally Posted by tuccillo (Post 1448677)

In the long run, non-ethanol fuel will bring you less problems with cars? I doubt this. I have never had an issue with fuel systems in any car I have owned in the last 35 years. One of the cars is 19 years old and has been fed nothing but ethanol-based regular fuel. There may be an advantage in using non-ethanol fuel in carburetor-based lawn equipment but extrapolating this to fuel injected cars is suspect. You will get better gas milage with non-ethanol based fuel, up to 3%, but it is not cost effective as it runs about $1/gallon more. I do use non-ethanol based fuel in my carburetor based lawn mower and pressure washer. My fuel injected cars and golf cart get 10% ethanol regular fuel.

Originally Posted by tophcfa (Post 1448841)

Great post. That is why I never use ethanol in our golf carts. Also, every time we drive to our Villages home I fill up 3 5 gallon gas cans with ethanol free gas from the Villages golf cart pump and bring them back north to run in my lawn mower, chainsaw, weed wacker, leaf blower, etc.. We are lucky to be able to get ethanol free gas here, not available in many places.

Originally Posted by Packer Fan (Post 1448888)

In your car they have made 100s of changes to deal with the ethanol such as changing to a more expensive seal material. Cars that take e85 are even more modified. If there was no ethanol in gas the cars would be cheaper and you would be getting 10% better mileage.

You sound like a corn farmer ������

Originally Posted by Chatbrat (Post 1448931)

In 1963 the 327 engines were 250/300 HP in the Impala- in the corvettes 327 engines were rated up to 340/360 hp--the 340 was carburated with 11.5 compression the intake valves were 2.02" and the exhausts were 1.60 "--- the 360 hp engine was fuel injected

I had one with the big Daytona tank & knockoff wheels--my vet was a 62--same power as the 63'

Originally Posted by Ecuadog (Post 1449133)

My old carburetor is bigger than your old carburetor.

Originally Posted by dewilson58 (Post 1449138)

It's a four barrel, Holley, 600 CFM.

Originally Posted by Ecuadog (Post 1449140)

Double pumper?

Originally Posted by dewilson58 (Post 1449138)

It's a four barrel, Holley, 600 CFM.





:loco: