Thoughts on water/methonal injection.

[napcoguy]

My 84 K30 is equipped with a 454 and sm465, It is currenty my daily driver so I am trying to get the best mpg out of it that I can. I put a edelbrock 600 cfm carb on it and that helped some I think but what is the consensus of adding a water/methonal injction setup? Ive read that it helps promote power and mileage but I cant find any articles online that help me find my answer.

[GRADYS Performance]

Water does not burn, it just cools the intake charge and cleans the combustion chamber. Most likely would not help mileage.

[homemade87]

Meth is mostly used to control detonation on boosted engines . As grady said it cools the chamber

The first thing most don't look at is your air fuel ratio . You can put a smaller carb on and still have gained nothing ( most all carbs run rich ) . It all depends on air fuel and the tuning of the carb at part throttle and cruise . Get a a/f gauge if you really want to know where your at and do some research on carb tuning . There is a lot to tuning a carb and is rewarding if you take the time to learn . The other alternative is an efi system .

The a/f gauge is a valuable tuning tool even if you go efi. But remember you have a lot of cubic inches and a lot of weight to move around .

If you are running afr of 10.5 there is plenty of room for improvement . But no way to know this without the proper tools .

Just something to think about .