You don't need to degree it unless you plan to move the cam timing around. Put the cam and timing gears in straight up, because you wont see much difference in the power advancing it.Comp usually grinds their cams 4 degrees advanced, so going another 4 degrees on the timing set will result in bent parts.
E85 is 70%-85% ethanol alcohol, the rest is gasoline amd usually the worst stuff they have because ethanol makes it so much better. Yes, seriously. Ethanol can withstand high compression and boost. It doesn't ping like gasoline does, makes more power everywhere in the RPM range, runs cooler and cleaner too. In a low compression engine it usually gets worse mileage, but with high compression you can get better mileage on ethanol and make lots more power. If you read or hear something negative about it that isn't less mileage in a low compression engine, its pretty much false or highly exaggerated. Like water absorption, its a moot point because you will simply burn the water. Straight ethanol will run in an engine with between 5:1 and 22:1 compression easily. E85 gets a little more touchy over 16:1 due to the gasoline mixed with it.
Really old rubber parts can be affected, but if its been rebuilt since 83, it is probably ok. It can and will clean the varnish left over from gasoline in the tank, that can clog filters, pumps, carbs, and injectors. If you have been running 10% in it, you more than likely dont have to worry about the varnish anymore, its probably gone.
All it really takes to switch to E85 is either swapping the carb or modifying it to flow more fuel. I like it because i can make it cheap, it makes lots of power, handles compression easily, and everything is clean when I pull it apart. No black deposits in my engines. They look new inside.
E85 is 70%-85% ethanol alcohol, the rest is gasoline amd usually the worst stuff they have because ethanol makes it so much better. Yes, seriously. Ethanol can withstand high compression and boost. It doesn't ping like gasoline does, makes more power everywhere in the RPM range, runs cooler and cleaner too. In a low compression engine it usually gets worse mileage, but with high compression you can get better mileage on ethanol and make lots more power. If you read or hear something negative about it that isn't less mileage in a low compression engine, its pretty much false or highly exaggerated. Like water absorption, its a moot point because you will simply burn the water. Straight ethanol will run in an engine with between 5:1 and 22:1 compression easily. E85 gets a little more touchy over 16:1 due to the gasoline mixed with it.
Really old rubber parts can be affected, but if its been rebuilt since 83, it is probably ok. It can and will clean the varnish left over from gasoline in the tank, that can clog filters, pumps, carbs, and injectors. If you have been running 10% in it, you more than likely dont have to worry about the varnish anymore, its probably gone.
All it really takes to switch to E85 is either swapping the carb or modifying it to flow more fuel. I like it because i can make it cheap, it makes lots of power, handles compression easily, and everything is clean when I pull it apart. No black deposits in my engines. They look new inside.
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