How about the stories of,

"if you don't run an intercooler, your manifold temps will be 200+ degrees with a roots''

"if you go from 6psi to 8psi, the temps will go higher with a roots"

Your air temp has been a steady what, 140* in the intake non intercooled, at both 6psi and 8psi at wot? Is the air temp actually hotter at cruise, than at wot?

On the dyno with a 522 and 10-71 combo, with a chiller, at 6psi, 8psi, and 10psi, the manifold temps barely changed if any. Although from 6psi, to 10psi, the power jumped over 120HP.

I will say though, hands down, the Whipple 510 is a bad azz piece, and I would take them anyday over a comparable roots, sans the cost difference. They will make more power, the idle bypass system works awesome, and they look fricken cool as hell. Plus, the conversion to install them in place of a GMC style roots, is pretty simple. on the dyno, we held the bypass closed on a 588ci with that blower, pretty good cam, some 1050 carbs. With the bypass closed, the engine surged like a roots at idle. AS soon as the valve was released, smooth as butter.

And that power Zero Patience made with them, is dam good! I was on the phone with a friend on saturday, who built a very similar combo, and his power was right there with ZP's, as was the boost level as well.

I was told I was running at least 225* by an intercooler salesman.
Haven`t seen it ever go over 150* ,in boat, the more fuel that goes down those carbs the cooler the charge no matter the boost.
I prefer to test things for myself, too many wives tales out there,

I'm done arguing with you meatheads. If you knew half of what you claim you would have the baddest engine shop on the planet.


http://i1123.photobucket.com/albums/...psmnngrfjj.png


Back to the thread BADASS engines Lock & Load!!! How much did your cruise speed pick up?

Forgive me if I'm not impressed I made 975hp with smaller blowers, smaller cams and less boost... I think I will stick with my engine guy....

I thought this was kind of interesting

The roots combo also had Dart 360's, the whipple combo had Dart 355 CNC pro 1's if im not mistaken. The the Dart 355's stomp the 360's in airflow, unless the 360's are heavily ported, which they were not.

If I remember right, Mike had an old 572ci , Dart 360 headed, 16-71 roots combo on the floor of his shop, he was going to sell. He wanted to dyno it prior to listing it for sale. It made just over 1000HP, maybe 1050ish.

His 8.3L whippled engines, are 588ci, Dart 355 CNC pro 1', and made 1205hp with around 12-13lbs of boost. I do not recall the boost the 16-71 was making, but I believe it was close.

He did not remove the roots, and bolt the whipple in place, and do a dyno pull. two separate engines, two separate dyno sessions.

4-5lbs more boost with the same pulley ratio he says

Oh geez MMB getting all butthurt, can`t have a discussion with facts, real numbers and experience it`s all about my brothers sisters boyfriend, cousins friend told me he went a full second faster with a Whipple. :rolleyes:

ok good talk buddy.

sounds like its easier to turn to me!!