Tunnel Ram 383

For what you have I'd say it's a huge mismatch.. If you want the wow factor, get a small cam and run it. But it won't be fast. It will be very easy to overcam it and it will feel sluggish at part throttle with the rpms those gears will keep the engine in. I'd say do everything you can to get the compression up to a true 10:1. BTW, if the engine was rebuilt with "9.0:1 pistons" and the engine wasn't blueprinted, it's probably closer to 8:1 than 9:1. So there's a lot of room to improve that. On the carb syncing package. Get it. The vacuum the carbs use has nothing to do with the intake vacuum which is what the plenum shares between the front and rear sets of runners. I think a set of 390s would be a much bettter choice, along with a cam like the XE262H. No bigger than that.