advancing the timing from +4 to +5?

[VictorK]

I'm running 20cc domes in 600-1200ft above sea and +4 timing. Would going to +5 yield any kind of gain? Also, would that cause the need for higher octane fuel?

[12 0 Clock P I M P]

running the race fuel should be based on your compression....with 20cc domes and +4 your getting close to the range where u should start running it

[Darthwall]

very little if you bump timing up the comp goes up you probably wont notice much

[rdzbangshee]

i run 12 but i run lots of meth in my fuel its a pump gas mix with race fuel it runs like shit but its all i can get for less than 4 buchs a g

[06specialedition]

I run +5 on my stock 350 with pump gas. No problems at all. Not sure its really a huge difference between 4 and 5 though IMO.

[fastquad02blaster]

I run +5 on my stock 350 with pump gas. No problems at all. Not sure its really a huge difference between 4 and 5 though IMO.

Yeah. Probably not going to be noticeable by feel, but will help. Every little bit helps.