What is your ideal engine compression for running boost... Weekend driven on the street..

Also.. a 350 cu inch engine would be better than a 383 because the longer stroke makes the connecting rods jerk more on each rotation causing stress... where as with a shorter stroke on the 350 the rotating force is more centralized so u can run more boost right..??? Am i close..?
kinda like riding on the inside of a merry go round u feel less force/stress than on the outside.

Im asking because i might be upping my compression and possibly going 383... but these would defeat my long term goal of going turbo when i have the cash.

 

How much boost you can run depends on your CR (and cam, discharge air temp, and to a lesser extent, other things like quench). Basically if you stay with stock heads, you can only lower your CR so much because of the small chambers. And since a 383 has more swept area being compressed into the same combustion chamber, you can't lower the CR as much as a 355.

The biggest dish piston the on market is around 31cc. So, with stock heads you are looking at around 9.5:1 with a 383 and maybe 9.0:1 with a 355. You then run as much boost as you can given your setup.

Since AFR heads are available with combustion chambers ranging from 52 to 76cc, you can attain any CR you want and get pretty low.

I don't know anything about stroke affecting boost levels.

 

8# boost is good with up to 10.25:1 compression

 

Statistically, all of the stupid-fast cars have strokers:

http://www.96silverz.cz28.com/dyno.htm

http://www.blackknightcamaro.com/

http://para.noid.org/~lj/

http://members.***.net/blownz/

 

well.... more cubes is more fun on the street since you can just mash the gas and have more torque on tap, instead of having to wait for the boost. But a 355 still has plenty of torque on tap. I guess it just depends on how much you like off the line lack of traction. But remeber this, longer stroke means less rpms. But i guess if youre turboing a 383, you're still going to be able to rev to atleast 6700-6800 with stock heads. Our turbo 388 is going to rev to 7500, but its having ported 235cc proactions with a 242/236 solid roller.

wait a second.... my post delt with nothing on compression.. which seems to be the issue....... oh well.