| Ported FIRST Intake -- Progress thread w/ pics |
Subject: Ported FIRST Intake -- Progress thread w/ pics by Z51L9889 on 2008/11/26 3:34:36 I've begun porting my FIRST intake for my 383 build. I will be gasket matching the base to a FelPro 1205 and opening up the base and runners such that the passage tapers from the inlet at the plenum to the minimum area at the intake manifold exit. Here are some pictures of the intake parts before porting and my initial (very) rough-in of the first runner. As the pictures show, I've got a fair amount of material to remove, but these things have plenty of meat for porting. To give an idea of the size, the wooden balls shown in the porting pictures are 1.75" in diameter. A stock TPI base and runners have a diameter of 1.47". The goal is to get the runners sized to pass a 1.875" ball through the runner all the way into the manifold where the shape transitions to a rectangle. I'm at about 1.86" now -- I'm sneaking up on it so I don't break through. I'll post more progress pics as I go. Enjoy. http://s137.photobucket.com/albums/q224/z51l9889/FIRST%20Intake/ |
