In the mid 80's I put one on a 305 Chevy half ton pickup, with a 400 Holley. It made the 305 more of a dog than it already was. I lost 4 mpg over the factory 2bbl. I yanked it and put the stock intake and carb back on. I can't imagine why anyone would want to use it on a 440. As stated, the factory intake or Eddy Perfomer makes better sense.
Yo eL ..... BLAME IT on that pig fat Berri crab !
But seriously... your experience does not match OTHER PEOPLES hands on experience that actually have used that piece for an extended period of time
CLEARLY.... it is not a horse power piece ... but as far as low rpm GRUNT and MPG ... it works.
But as I asked mGo... what’s his gearing ... that’s a big factor
