I'm running 11.8:1 compression right now.

Last year it was 11.3:1.

Ever since I got my new heads I've been blowing the dipstick out a little bit when I floor it. I also have blue smoke from the exhaust when I floor it.

I ran 116mph traps like this.

Car seems to be getting quieter too. Its loud when I first start it up but then gets quieter.

Time for new rings? Too much compression?

 

If the tune's good I wouldn't think it's too much. I'm running (trying to at least, damn rockers) 11.7 on my new 355 and it's seemingly fine.

 

Grip what is your dynamic compression ratio? How is your cooling system? Do a search in the advanced tech for dynamic compression ratio. You should be alright with 93 without a doubt IMO but firgure your dynamic out.

 

I'm running 11.8:1 on a stock bottom end. That's from heads shaved 0.030 and an LT1 Impala head gasket (0.029 compressed thickness). With the 230/236-112 cam, the dynamic compression comes out to about 8.9:1. I run it on 91 octane California MTBE gas (you can't get higher octane here without going to racing gas) with no problems. Knocks on wood :-)

If you are blowing out the dipstick, I'd say you have blowby problems and the engine might need some work. Blue smoke is also a bad sign, since it means you are burning oil. Run a compression check to see what's going on. On a cold engine, mine had 150-160 psi across the board.

BRAD

 

Thats what I am running and I dont have any problems.

 

When its cold its fine. When it heats up my oil pressure drops slightly and the car gets quieter.

I did also put in a bottle of engine oil supplement a month ago. I should do an oil change.

 

how old are your valve seals & springs? Are you getting any knock?

 

Valves and springs are new.

No knock. No retard.