Porting

[cuisinartvette]

Flowing parts on a bench is pretty cheap, the problem is making the fixture to flow the IH and plenum, that would take some time and most shops wont be willing to do it unless you pony up. If ports are siamesed flwing doesnt make much sense at that point to get a true reading...jmo..

[bradslt5]

I agree wouldnt you have to make a divider that would seal each port in order to get a somewhat accurate reading. and even after that it would be a guess?

[Locobob]

Flow bench testing really isn't necessary unless maybe you are playing around with different port designs / configurations. The basic ingredients for a port job on a lightly modded 350 cid LT-5 are pretty simple: 36mm plenum ports, 36mm ports at the top of the injector housing, taper down to near stock size at the bottom of the primary runners (unless heads are ported), remove most of the huge primary injector boss (90-92 only), port match plenum to injector housings. Port to port consistancy is maintained by frequent measuring with telescoping gauges and or ball gauges.

[flyin ryan]

Originally Posted by Locobob

Flow bench testing really isn't necessary unless maybe you are playing around with different port designs / configurations.

the top people in the industry right now, Pro-Stock & Cup, hardly even use dry benches these days. way too much going on for those to be relevent. wet bench testing on the other hand

[cuisinartvette]

Did this just today...The intake port (on the left) alone took me 6 hours, and its still not 100% done, probably another hour or so left in it.
(95 LT1 head)