I've misunderstood how headers work? Yet. I'm not the one who can't even do a burnout? Uh huh....
And lots of race cars have collectors. I should know. I've worked with them. I've worked with sprint cars (sportsman, ASCS 360 and 410 Outlaws), wissota late models, dirt stock, pavement stock, pavement late model, mini and micro sprint. Guess what those guys run? Oh right. Full length headers with collectors. Heck some even run mufflers. OH I've also worked with drag cars, alcohol, top alcohol, sportsman, door slammers. You name it. So yes. I'm well aware some drag cars don't have collectors. They run "zoomies". Which BTW you will LOSE power on. Seriously. Look it up. It's well known that street engines running zoomies give up power. The only reason dragsters run them is because they are already making so much power they aren't worried about the 50hp+ (yes, it's that much). Or they are forced induction and don't worry about scavenging because the blower is forcing air through so fast there isn't any time for scavenging and its affect. The fact is that, like you said SOME race cars don't. Some. Of the highest horsepower producing engines ever made. I know a guy that put's 1930HP to the tires. Guess what he runs? Full length headers with a full exhaust. On a street legal vehicle. Last time I checked he had no problem doing burnouts. With 33x16x15 tires.
You know who does worry about scavenging? NASCAR. Yes NASCAR. They run all these neat little tests on their exhaust, X pipes and everything else. To make sure they get the most power possible. Sorry, how many race cars have you raced/worked on again?
And I also own Vizard's build hosepower book. Along with his holley books. Oh and his porting and head book. What else.... Oh I also have how to make build big inch mopar small blocks. How to hot rod small block mopars. And many many other books. I think the difference is that when I read them, I seem to understand them.
Tell you what. Obviously you were right from the start. The heads are bad. You should put the old ones back on. Send me those ones there. I'm such a nice guy I'll even pay for shipping. Laws are a little more lax over here for throwing out used car parts. So I will take care of that for you. Nice and easy. I'm just that nice.
Oh but you can keep your tip. My car does burnouts easily right now. I wouldn't want to change that.
