Exhaust Tuning w Shorty Primaries: Can collector length still be tuned?

[NewbVetteGuy]

Kinda random question: If someone has bought shortie headers that are NOT at a tuned length at all, is there any benefit to using PipeMax's recommendations for the secondary / collector harmonics or is the harmonic wave just gone at the collectors because of the Primary Pipe's untuned length?


A friend has a Dart block SBC 408, but put Sanderson 1 7/8" shortie headers on it with a primary length of only 7.5" (8th harmonic is at 10.3"), do the PipeMax Collector Length recommendations still apply despite the primary pipes being WAY too short?


Adam

[RevTheory]

It's a good and timely question as I'm wondering about a 2-into-1 merge collector length test, too so I'll be following your thread for sure.

[BOOT]

Run a y-pipe if possible, don't need to be equal length.

[Erland Cox]

You have to lengthen the collector to make it work.
But the collector does no good if there is not an reflection at the end of it.

Erland