sparks in a 416 and 11:1 octane

[chillytater]

im looking at putting a sparks key in my new 416 wiseco 11 :1 im sure i seen this on here somewhere but cant seem to find it now is there any issues with doing this. and wat level oct tane should i run in this thing

[rob_990]

i took mine out when i did my 416 cause i didnt want it to run hotter than it has to.you should be fine with premium gas

[Wheelie]

If you want to run the Sparks key with 11:1 compression, do NOT run any less than 100 octane fuel. Also, seriously consider additional cooling, either an auxillary cooler or a SPAL fan.


I tried the Sparks key earlier this year with my 11.3:1 440 stroker and it had a ping in the mid-range--even with 100 octane fuel and the added cooling properties of E85 and the fan.

I removed the Sparks key, cut the stocker for a 4 degree advance and the mid range ping disappeared.