I posted this on the drivetrain board as well, but I thought it applied to this board too.

Okay, I've got a couple questions for all you smart folks. I bought a stealth ram for my 305 (yes I know a 305 is too small), b/c I didn't want to waste $$$ building a TPI setup that won't support a larger engine/ high rpms.

The cam in my 305 likes to make mid range power. So, if the setup is going to run like ***/lose low-end torque, would a decent way to compensate be to go with a lighter flywheel? I am converting to a T56 setup, and am currently running 3.27 gears (which will eventually be replaced w/ 3.73s). I figure that with a lighter flywheel, the engine will spend less time outside of its powerband, and will spool up more quickly thus minimizing the effects of low-end torque loss.

Also, how well would flywheel weight correlate w/ rearend gearing--i.e. could a lighter flywheel somewhat compensate for higher gearing as well?

What do all y'all think?

 

The lighter flywheel just helps in quicker spool up of the motor, and maybe a horse power increase. you'll probably also find it will be a bit more balanced at higher rpm. With the HSR on a 305, you'll want high rpm, because your going to lose a lot of torque with the new manifold. But if your still running your stock valve train, then you probably won't notice much of an improvement. you'll have to start working the valve train (cam, valve springs, etc) and also look at either head porting or new heads. the list can go on and on, but to see really anything out of your 305 with the HSR and a lightweight fly, there will be work to be done. Oh, and with the 3.73's, they should be fine. There pretty good with mid-high range motors. Not too little, not too much. Just my opinion.

 

A lighter Flywheel is pretty much always better, regardless. Less Mass to Spin Mean more Power Can be used to propell the car. Simple as that.

And Don't think your gonna just kill your low end torque with the HSR - Plenty of people Run Dual Plane Performer RPM's on their 305's With no problems.

That Manifold has shorter Runners than the HSR - and a Similar powerband.