Just a 284-484?
Let me tell you guys something until you build this engine show some respect cause I sure am not feeding you a line bull@#$%. Just think like a pure-stock guy and rumage through hundreds of parts until you get those right pieces. Think outside the box. Oh, you'll like this even better with a cast iron intake it made 419hp-422tq and a thermoquad.
Hey, it's only my opinion and I apologize if it's not shared or taken to be a cheap shot. I'd like to be proved wrong with emiprical data because I don't trust dynos or flow benches completely even in my own stuff. They are at best tools, and tools whose results can and are manipulated all the time. I was partially educated by a multiple NHRA Stock Eliminator (S/D, S/E,S/F, S/M) record holder. In fact, I'd seen a hydraulic cammed 351 Ford Cleveland make 490hp w/9.5:1 compression, stock lower end, factory 4bbl intake, and the factory Autolite POS carb. That engine went 11-teens and shifted at 7200rpm. Interestingly he also set the S/M national records with the same long block by just swapping to the 2bbl setup.
I have a hard time believing the posted results. Nothing personal it's just an opinon.
T67 - Again, just an opinion here... Thanks for posting all the info. Your Coronet's engine makes around 375hp (I'm assuming typical LA 340 port that will flow around 210-215cfm in factory form). I'd say that's about right for what you have and the ET's show a well sorted, drag race oriented car. Port the heads all you want. The cam is probably already holding you back and isn't using flow that's available (with a better cam you could make over 400 with stock heads). Without replacing the cam, I can't see it making 2hp/cfm. It is making 2hp/cfm. 375hp/2=187.5cfm. But basing it on what the
cam is able to flow. Not what the
port might be able to flow. It makes 2hp/cfm, but it's still shy of what the heads potentially could be making. I think what you've got is right around where I thought it would be able to flow.
The cam's good. not great, but good. If forced to use and MP product I'd take the MP .528 over it any day and make more usable power with it.