fstenuf

i was just wondering what kind of gas i should be running with my 396. it has 11.7-1 compression. i was told to use the highest octain at the pump and i have been doing so. i'd also like to know what kind of additives i should be adding to my gas to help my engine out. i only drive it on nice weekends. any info would be great thanks

RedHottG2

92 or 93 pump gas should be fine (wich ever you have). As far as additives go, I don't really think it's a good idea to put that crap in your motor. Maybe a little octain booster every now and then but that's about it. If you go to the track at all. Drive your car there almost empty and get about a 1/4 of a tank of racing fuel. You should have good results.

Jeffs94Z28

i used only 93 on my 350. And i second that regarding the additives. I believe additives will yield minimal results if any. Waste of money in my book.

fstenuf

i only have 91 octain where i'm at, so i didn't know if i should mix in some cam II or something? thanks for the help. and what do you mean by race gas how high of an octain is that?

Jeffs94Z28

ive seen race gas rated at 102-112 octane. 91 octane should be fine for street use. race gas can also be bought at some airports.

fstenuf

is that high of an octain be bad for the internals of my engine or should i not worry about it?

Jeffs94Z28

although im not sure, ive heard higher octane gas burns cleaner. ive used octane boosters that you can buy at autozone, and i found no difference.

fstenuf

so the octain booster doesn't really help out that much? what about mixing some cam II with the 91 octain would that help out any?

RedHottG2

I got some gas once at a small local airport once, I think it was 112 octain. It made a nice diff. in a 1990 454 SS I use to have that I converted to carburator. I think our nearest track only has Sunoco 100 octain. Even that makes a nice little diff. as well. As far as the other stuff your talking about I don't know anything about it. But I would prolly steer clear of it.

Jeffs94Z28

i couldnt tell any difference with the octane booster, asfar as the cam II, i have never tried. I think your best bet is to get some race gas.

fstenuf

alright, thanks for the info.

Jeffs94Z28

No problem, I'm always glad to help. The race gas is probably $3/gallon.

fstenuf

small price for more horsepower

Jeffs94Z28

I couldn't agree more.

Jeffs94Z28

How much did the rebuild cost?