As the title says

Is supercharging a 11:1 compression motor a good idea. Im toying with getting a 383sbc that has 11:1 compression. But also love supercharged cars and would like to add on at a later date.

 

Low boost with E85... I was in the same dilemma with my Iroc and decided if I boost, I'll go back to stock heads and 10:1.

 

e85 isn't a option around here. This area is still highly stuck on gas.

 

That is why I chose against it as well. It is available, but I drive the car too much to be worried about finding E85. Maybe down the road for me.

 

 

I'm going to do this on my 4200 Vortec (if I ever get a chance to finish the install). I won't be looking for a whole lot more than turbo noise but still should bring the NA 300 hp up to around 450. I'm not sure what my options will be for flex fuel (using the stock ECM with some sort of HP Tuners mod to allow boost maps) but I would like to have the option of E85 but also the freedom to use 93 because of limited E85 sources in my area. Anyway I expect to run 8 to 10 psi with a conservative tune. If I were looking for max performance I would be doing something to lower the compression but this will just be a fun car.

 

Not a good idea on pump gas. I chose to learn the hard way and got lucky it only cost me a head gasket. 8 psi and 11:1 on 93 octane = lots of work in the garage I didn't want to do lol

 

yeah..... this won't be pretty. Maybe can pull it off and you have water/meth injection, but other wise no. 11:1 and boost is really in the realm of direct injection motors.

 

NO!

 

Steve, is the 4200 engine swapped into something? Or is this still in a Trailblazer/Envoy? I've always thought it would be fun to boost one. Forgive me if you have a thread going, haven't been on here in quite a while!

 

In his sig it shows "1949 Chevy Deluxe Sport Coupe - Turbo Vortec 4200 in progress"

 

Hi rx7speed , I hope the thread's participants will pardon the off topic post , I saw your sig of loving to play with your Wankel and figured I'd show mine . This is a true Wankel engine of .30 cubic inch displacement that pulls a 5 pound RC model airplane through the skies nicely . In a world of piston engines the Wankel truly stands apart and while many know of the RX-7 very few know of the world's smallest production Wankel , My O.S. engines co. version