1 5/8 headers

Dan the man said
How big of tube headers? You talking about a small block or a big block

I‘m talking about small blocks. I have 1.625, 1.750 and 1.875 to test. On pretty much a stock 360 and then on my 340.

I say the 1.875 header will make the most power on both engines and it won’t kill any bottom end.

I have tested this before so I already know the outcome.

The time slip can lie to you just like a dyno or a flow bench.