whistling question

It is a lot of info, I know. Thanks for all the input so far. Thats a good thought on the belts that I never thought of. They do feel a bit "shiny" when I checked them out

"It is doubtful you would get any different feeling in the seat of your pants if you changed to a RPM Performer intake."-IQ52

Really? I thought the RPM would help down low since it seems these 383s do not make a whole lot of torque down there. So maybe keep the Street Dom and go with 750 DP with a 4-hole spacer instead?

I don't get home from work until 8pm today, so Ill check timing then and post. It is interesting that I looked through some of the archives on timing here and nobody recommended using the manifold vacuum for vac advance, where with the chevy's, all the ones I've own ran much better and cooler hooked to manifold vacuum, as well as all my friends that had them (street-car wise) Whats different about MOPAR motors where this is not true? Just trying to learn. Thanks

Naw, I thought it might be a good idea to read the dyno test I posted, that compare the two intakes (and others), to see if you thought the differences between them would make it worth buying the new manifold.