"Big Cylinder Head Test Changes My Thinking On Low Rpm Torque"

Newbomb Turk said
I watched that yesterday.

This is why you have to test.

What he just found out some of us knew 40 years ago.

A good big port beats a good small port every time.

A bad port is a bad port no matter what.

And, I’ll say it again. When using OE architecture area is KING. You can’t get enough of it.

Darin Morgan has said that several times across several formats.

Edit: I say this all the time. The perfect example of screwing up a build is using 240 TF heads on an engine over 400 inches. They are too small.

The TF 270 should be the starting head for any 400 plus CID big block Chrysler, yet TF sells the crap out of them.

For the small block a W2 head is the MINIMUM for 340 inches. MINIMUM. They take very little work for that displacement.

For the 4 inch stroke crowd a fully ported W2 is the MINIMUM if you want to make power. A well ported W5 is a better start.

The best option is the W7 head for the 4 inch stuff.

Yea I was wondering what his thought process was (and where did it come from) that this test disproved? Nothing here really shocked me either, making power anywhere is all about how much charge you can get into the cylinder. I would have liked to see the TrickFlow with the exact same cam with more like a 110/112 LCA as well as it flows so much better to prove/disprove that theory (my money is it would prove it). Engine Masters had a 440 that they did some mild porting on stock heads and it brought the torque curve up dramatically at low RPM.