LOL.... We'll build the 440 eventually. I'm putting it in as is now because I'm more interested in this project on what it's going to do than I would be in any car project in my yard or on youtube... But rest assured, 318willrun gives parts away, hardly anything comes my way for free. ha!
I tend to agree
and I hope to help out others in their belief in a RV 440 with the results.. Or maybe I'll help myself out and get an understanding of what a gasping pig it really is.... LOL either way !!!
What I see on the dyno is most motors will gain some with headers over manifolds. The motors that have a camshaft with more overlap will respond with a bigger gain than the motors with less overlap when comparing headers to manifolds. 350 small cam 12- 15hp. 350 big cam 26 - 28hp. manifolds to headers.
Also creating reversion, good air can become bad air.
Thanks for real numbers. Can I ask are you hooking up a y-pipe and 2" single exhaust with a cat and a factory style muffler to the manifolds for those numbers? Do you think 40 hp is a reasonable expectation for a '77 440 going from the '77 manifolds/single exhaust/muffler to Headers/2.5" duals with FX mufflers?
Perhaps my question is out of the scope of this thread but: how does one determine the most duration possible before reversion occurs? I'm suspecting there is some relation to LSA, and or how fast the cam can close the intake valve.
As they said above... RV 440, it has a torker intake on it, it's going in a D150 long bed, will have headers, as the truck sits now it's 4.30 gear, may back off a little if it's too much gear for the RV engine
a wider LSA will decrease overlap and reversion.
I wholeheartedly agree with that entire assessment. And I’d like to add, an engine with a higher specific output will respond more than an engine with a lower specific output.
After it’s in the truck and run a few passes, can I please request the first modification to be an rpm air gap intake in place of the torker. Before any other changes are made.
Any idea what the truck weighs?
My thought with the torker was when I build the 440, it will be the right intake. I wish I had an RPM, I would swap it at the strip and give you the before/after right there! One of the benefits of the 8 bolts and dry intake
With the BB, should be about 3900 at the starting line
Maybe someone on fabo has one they can loan for a test. If I had one I certainly would. Anyone have an intake they’d like to loan and see a test with?
I imagine shipping would be about 40 each way. They are on sale at Jegs/Summit for 358.16 right now. If somebody has a "GOOD" used RPM Air Gap and would do 200 shipped, I will buy it and do the test at the track. Not one that needs repairs... LOL
P.S. - I gave a 100 for the torker... LOL
