It only took 8 years. The only thing that is going to help is to build it and show it and drive it and track it other wise it means diddly.
Apparently the shorty header project never went anywhere unfortunately. Maybe we'll try again once T/A gets caught up. I'd be interested in a set.
Sanderson makes shorty headers for the 300 and 340. Maybe ask them about the 350? Sanderson BSV8 Header Set (sandersonheaders.com)
Thanks! I did see that which is why I'd posted the question awhile back (IIRC you replied) about whether the exhaust port layout was the same on 350 vs. 300/340. I'd rather see @TA Perf make them & give them the business if they'd be willing. I have a set of long tube headers (& lots of time on this project) but I think I'd rather run shortys on this car ('71 GS convertible) assuming I eventually build something more than the mildly modded orig. engine for it which is probably what it'll get initially. @sean Buick 76 has some 350 exhaust flanges too so I could probably fab up a set if I'm the only one who wants them. I'd really like to do a test to see the performance difference between manifolds (stock & ported), shorty, & long tube headers.
Chevelle shorties adapted to the Buick flanges should work. Performance would be between stock manifolds and long tube headers.
I was thinking something would be adaptable with minimal mods. If there's no difference w/shorty headers than there's no point but that's the point of actually testing it.
Yes, obviously that would be the biggest performance differential. I'm more curious what one is gaining/giving up w/each incremental step.