What I want to see on the LS head would be the incremental flow increases for each step of porting. Just clean up the throat area and check how much flow increases, then just clean up the bowl and check, then just gasket match and check, then open up the throat and check, then open up the bowl and check, then open up the port to increase Cross sectional area then check. Basically want to see the gain from each single step of the porting process.
Sink drains too slow, bet he busts out the die grinder. I bet the air return in his house has a naca duct...crap, I bet hes got burst plate on his mailbox bc the mailman shuts it too fast. Wealth of knowledge, so awesome you share the hows and whys, heck I learn something every time I watch your vids.
I think it would be cool to do like a contest in a way to pick 3 people out of your comments and get them to pick what to do to each port and see which ones flows the best and have a winner. And you could choose a prize or something for who’s ever flows the best? That’s just one idea.
Thanks for providing some general context about what kind of engine, rpm, and cam the heads you port will end up on. It provides some valuable context to how those flow numbers will be applied. Any time you can share specs on what the head will end up on and how it will be used it is appreciated. If it doesn't hurt your hand, maybe do one port with something like a Harbor Freight die grinder, router speed control, and just pick a couple of areas to address that would get a DIY 70% of the peak results without hitting water...if that's possible.
is that 720 on race or pump gas? what would be the 248x's max on 93? Would running a 1209 gasket make any more power? and for the LS intake port idea, What if you did some abrasive flow machining. like have a super abrasive paste flow thru the intake 3 times or so and seeing what the paste thinks the restrictions are, remove the pushrod pinch too, as if it was an ls head with free valve technology. I think that could be a super cool test. if you did a test on a stock sbc head or something, I'd wonder what would happen if you cut out the divider and knifed it when so you didnt hit water?
I know this has been asked, but new to your channel. Watched the AFR vs Profiler heads and question one, does the intake valve size of 2.05 vs 2.02 make a big difference? Second question, what out of the box sbc head would you consider to be a good head for a strong 500 HP street head? I've heard people compare Brodie vs AFR and now you're Profiler head. Kind of leaves one baffled a bit. The biggest I want to go on came is .530 for this engine
I realize you build race engines, but what I noticed on your side by side flow was that the larger valve had better flow at low lift which would make more low speed torque on a street motor. Just an observation.
There's a great example of dimpled heads in this video right before the header time lapse ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5Y4uSFrIaB8.html
Eric do you realize how many racers I’ve tried to pound that into there heads? When you have a peak flow @ 600 lift! You really want 700 if you can fit it! So your actually using what the port flows! These are small things that bad ass engine builders know & use to make more power than the guy in the other lane! I think we tried dimpling years ago, I don’t believe it added any power, but I think it was helping the fuel atomization especially in carbureted nitrous engines! I’ll have to ask the old man about it 😜😜😜😜, my boss, people call him uncle Pete! Also he looks exactly like Pete Harrell! Except he’s probably 4 in shorter, with short hair & his name is Pete also, hysterical they probably could be twins! 😜😜😜😜🤪🤪🤪🤪!
720 hp from a 406 at 7000 rpm is 1.33 lb-ft of torque at the power peak. 1.25 is a seldom-reached number, so 1.33 is REALLY good. (Torque is what the engine is producing, horsepower is rpm dependent.) That is one effective cylinder head! The flow difference between the heads on your comparison page is 2.5-3%-at 700-ish horsepower that is about 20 hp more, just what you said happens on the dyno. Anyone wanting to build a strong SBC should be coming to Weingartner Racing!
Enter into super gas, my boss Jerry Pollard will be there in his golden 65 mustang running 9.90. Maybe you can beat him with your camaro? If you see him tell him I said hi lol...
