The Ford Barn - View Single Post

Ol' Ron · 07-04-2020, 07:30 PM

Years ago I did allot of flow bench testing, most of it was a waste of time but I did learn a few things. When testing port flow, you must have the head on. Unfortunately the cylinder head has allot to do with flow. So the answers you get don't mean much. With tat said, the seat angle had little to do with flow, hard to measure. sometimes something looks good, but doesn't preform as well. Just like those 40% headers.. Removing the intake seat in the 59 block allows you to install the chevy 1,72 intake valve, be carful when blending in the bowl, it gets thin there. Again, this doesn't improve flow much better than the 1.6 valve. I'm working on this problem right now. BUt????

07-04-2020, 07:30 PM	#12
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,861	Re: Hard seats on exhaust only Years ago I did allot of flow bench testing, most of it was a waste of time but I did learn a few things. When testing port flow, you must have the head on. Unfortunately the cylinder head has allot to do with flow. So the answers you get don't mean much. With tat said, the seat angle had little to do with flow, hard to measure. sometimes something looks good, but doesn't preform as well. Just like those 40% headers.. Removing the intake seat in the 59 block allows you to install the chevy 1,72 intake valve, be carful when blending in the bowl, it gets thin there. Again, this doesn't improve flow much better than the 1.6 valve. I'm working on this problem right now. BUt????