Good day!

I put together a 406 sbc for my 89 firebird. I think it has all stock bottom exept for deep dish cast pistons.I had the decks shaved , put the 410hp edelbrock top kit on it with 65cc heads to raise the CR who is at about 10 to 11:1 now. The engine was doing ok on the dyno, did 413hp and 449lb ft. I'll post the specs of the heads and cam later today. I would like to get more something around 500hp with it so Im doing research to see what I would need to put a single turbo setup on it. I'm wondering if I have to drop the compression ratio absolutly if im not running a lot of boost and also if I should change the cam, pistons and connecting rods. I know that this post is vague, i'll try and post detailed specs later today. Any related experience is greatly appreciated. Thx in advance.

 

As long as you keep the cylinder pressures lower, you should be ok with a conservative tune.