| Re: I need more air........... |
Subject: Re: I need more air........... by Aboatguy on 2010/6/27 14:35:03 I'd be more concerned with the fact that the headers/gaskets...blocking part of the exhaust ports.. I posted this on the other site... AFAWIK blocking part of the exhaust port is going to hurt your performance... IMO time for headers that fit ....IE header opening are same size or larger than exhuast port... I had header gasket issue when I changed to the AI 200s my Percy's gaskets were blocking the port a little..... Finding the right gasket helped end the soft upper end.... IMO if your heads are as good as claimed and you are using the 280XFI your engine should pull up to your redline...(ie whatever rpm you feel safe running factory shortblock to) However, lousy exhaust doesn't explain a high map to baro pressure delta..(if in fact you have a high delta) I remember reading (shortly after the edelbrock manifolds release) that the Edelbrock LT1/4 airgap manifold had a decreased plenum volume....I wonder if the decreased plenum volume has anything to do with your map/baro delta... Mike |
