7200 / Class 6 Engine Compression Questions

[idealer]

I am building a bowtie V6 for 7200 and trying to decide what compression to go with.

I am thinking of going 10:1 and running 92/100 or should I go 12.5:1 and run 112?

I am leaning to the 10:1 option so I get better reliability and can run on premium pump gas what are your guys thoughts....

[racer56]

You should be able to run 91 premium pump gas to 11.5:1 compression.

[idealer]

Don't you think that would be pushing it? I here numbers all across the board. I know with aluminum heads, I should be able to get the compression higher but I guess the real question is 110+ race gas or premium/100

[racer56]

How much do you want to spend per race? GM LS series motors are 11:1 stock. Build the motor for pump gas and when it is time to rebuild you can bump up the compression for more power.

[partybarge_pilot]

You should be able to run 91 premium pump gas to 11.5:1 compression.

Only if you back the timing off and ritchen it up. At that point, any power you gained from the extra comp just went out the window.

[baja619]

How much do you want to spend per race? GM LS series motors are 11:1 stock. Build the motor for pump gas and when it is time to rebuild you can bump up the compression for more power.

Wouldn't that be a V8?? I am asking...