Subject: Re: Super ram? by 88BlackZ51 on 2009/1/13 17:31:40
Quote:
BeachBum wrote: Quote:
88BlackZ51 wrote: Beach, I wouldn't think that combo would of reved high enough to fully take advantage of the miniram. Actually 11.60 is good for that combo. What was the diff in 60/MPH?
More cam would have probably helped the Miniram, but it would have also helped the Superram. The real problem in comparing the two intakes with a hyd roller cam, is that you're limited by rpm and really no matter what you do, below 5500 rpm on a 350-383, the Superram makes considerably more torque, thus accelerates faster with street type converter/gearing packages. With a Solid Roller cam, the operating range maybe 5200-7200 rpm, it then becomes clear the Miniram is vastly superior. But, in my opinion, shifting at 6200 rpm, the Superram is a tough to beat intake if you're going to use a street friendly tight converter.
In my test, the Superram's advantage was mostly in the 60 ft time..... although it did trap speed 1/2 mph higher as well. This is because in the operating range of 4200-6200 rpm, the Superram made more average HP than the Miniram in my application. On the 60's, the converter with the Superram flashed to somewhere around 3200 rpm, whereas the Miniram, the same converter flashed a couple hundred rpm lower, keeping in mind, the torque you have below the converter flash point does matter because it does effect the amplitude of the converter stall.
On your 421 cubic inch application, the Miniram is the better choice in my opinion, simply because the Superram begins to inhibit the rpm capability with a big cube motor.... I've seen dyno's with similar set-ups to yours, but with a Superram, where the Motor made 520 HP @ 5200 rpm and 570 ftlbs @ 3800 rpm...... very stout, but the MR would be a bit more balanced and probably produce better et's.... albeit it would probably be closer than you think. With the same motor, a 560 HP @ 5800 rpm - 530 ftlbs @ 4500 rpm would be close to reality with the MR. In addition, your 421 cubic inches are providing the low to mid-range torque necessary to get your butt in motion that the smaller 350-383's just can't provide.
I believe you. I would rather give up 40 ft/lbs to gain 40chp anyday. I think I will have more then enough tq downlow with the MR on top. My car is light, and street driven hence why I wanted a really short runner, and something that will rev to 6k plus if needed.
