What is everyone's experience with the dual setups? Are they worth the few extra bucks or is the single carb a better option?
On my built 383 with aluminum heads I had an 850 Holley on a Performer RPM intake and it was extremely snappy off the line and for the entire rpm range.
Also had a tunnel ram on it with 390s, then 600s, then efi, progressively better each time.
The tunnel ram is the Weiand, which flows very well.
I would rate them in this order: 390s is a waste of time, single 850 was great, 600s were very good and comparable to the 850 (lacked that initial snap off the line unless you brought up the rpms but you would run out of road before you ran out of speed/rpm), dual quad efi is best by far.
Never went bigger on the tr with carbs, could have probably went bigger and got better results.
Efi throttle bodies are gigantic.
I also ran the tr with the 390s on a stock worn out 383, it was fun, ran better than the Torker II with an 850 Holley, but that single open plenum intake was too much for a worn out engine.
On a rebuilt stock 383 HP, purple cam, stock heads, I ran the Performer RPM and 850 Holley and it was a blast.
Recently I swapped on the tr with 600s, tuned the carbs a bit, a little more timing, and it's pretty snappy and fun, but needs to be dialed in a bit more.
I bet aluminum heads would bring it to the next level and match the flow of the tr better, but that is not happening.
In my experience, progressive linkage is not good, 1:1 if you want all the power.
I have heard the low rise in-line dual quad intakes are not as good as a tunnel ram or single dual plane, but have no direct experience in comparing them.
