So unfortunately i changed directions and i wont be able to see if 500 whp is possible with a 5.3. But good news is that I started a Ls3 build.

My goals are to make as much power as possible out of a stock displacement 6.2. I dont want anything too crazy but drivability isnt as big of a concern as maximum power.

I already sourced a nice ls3 block which is sitting at the machine shop. I am just waiting on the JE +10cc dome pistons I ordered to come in.

I am looking for somewhere in the low to mid 13s on compression ratio. And I will be running e85

I am thinking about the trick flow 255 heads.

I plan to run a sheet metal intake or ITBs



I would like to close to 600rwhp

Thoughts or suggestions?

 

600HP with the 6.2 will be a lot easier than 500HP out of a 5.3.

 

I cant decide between the trick flow 255s, the afr 260s or the prc 260s.

Any input on these heads would be helpful

Thanks

 

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