L31 Intake Manifold Flow

[newsacramento]

Hi, I wanted to know the volume, length, and airflow of the L31 intake manifold 350. Is it worth porting and if so how much hp increase is it? Looking to increase hp and torque in a 1996 350 vortec. Thanks

[98silvz71]

Hi, I wanted to know the volume, length, and airflow of the L31 intake manifold 350. Is it worth porting and if so how much hp increase is it? Looking to increase hp and torque in a 1996 350 vortec. Thanks

 

I don't think there is a whole lot of improvements you can do and even if you could it would still be the same engine. I know a couple of guys that have stroked the 350 out to a 383. But sometimes that still takes alot of work to do. Hopefully one of the more knowledgeable engine builders will chime in on your question.