Anyone running a stealth on a big block? I ran a search but not much about the stealth. Pros and cons as to the Ed-rpm? Any thoughts would be nice. Also thought I read the vacuum was easier to get to on the weiand.

Don't know, but i willstart it off..

From what guy's have said and I have read up on the Stealth intakes, they are bigger plenum/runnered then all the rest of them which, I assume would help a bigger, high rpm motor, but hinder a smaller, lower rpm motor???

Anybody else, please feel free ta pop right in...

It's kinda like an old E-brock, 2101 that has visibly larger more curved runners, it will feed a bigger motor then the newer, Performer, but the lower speed air/fuel flow "quality" isn't as good, therefore torque suffers but hold on upstairs until it reaches it's rpm/motor size limit..

pdq67

I have a 396 street motor that I am trying to configure one time and get it right . Would appreciate any insight on this!If you are correct it sounds like the rpm is a better choice for my chevelle.

I have one that I will be running on my 489 this spring. Tony at AFR said it is the best performing dual plane when coupled with AFR heads.
Steve

Originally posted by SMS:
I have one that I will be running on my 489 this spring. Tony at AFR said it is the best performing dual plane when coupled with AFR heads.
Steve That's good to hear. I have a Stealth on my 540 (for hood clearance, CI) with AFR 315's. That makes me a little more confident about my choice. Thanks.

I run a Stealth on by Big Foot (44in swampers) and it runs very well from 1500 to 7000rpm! And with 850hp gets good mileage to boot, long as you don't keep your foot in it all the time! :D

Any 396's out there? :D

Can anyone compare a stealth and a single plane team g on a high compression big cam big block...mike

Well here we go again! Thats exactly what I run on my race car. The team G will run strong from 2000-8000rpm range with tall runners which lifts the carb away from engine. Weiand Stealth runs from idle to 7000 with short runners. For strictly race I run the team G even though only go 7000rpm max at this time! Stealth would not only work much better on street but would work for strip use too! :D

blazerbob, I ask this question cause i think the stealth square port is underated at 7000 rpm I bet that intake is good for 7500 rpm I was curious on any one that tried both ...mike

Oh my! I just read my previous post stating my big foot 468 motor has 850hp! I meant to say Holley 850dp!
69ralleygreen: I think the Stealth would begin to lose power at over 7000rpm compared to Team G! No I haven't compared them on a dyno but they are even advertised this way and I do run both of them but on different vehicles and purposes!

blazerbob, What compression ratio do you have in your camaro? I have 460 big block 12.5, Just wondering how that stealth would work vs: single plane my cam is a 630 solid lift(4000-7500 rpm range), I do drive on the street local cruzes only...mike

i had a stealth but i never ran it.....i was comparing it to the rpm (friend had) and the rpm looked like it had better runner designs.....the stealth looked fatter and looked bigger in the plenum....it sure looked like it would work better upstairs....when i was looking for an intake i bought a stealth for my 414ci 396 becuase i got it cheap but after seeing the two side by side (rpm/stealth) the rpm just looked like it would do a better job down low for torque......i would use the stealth tho if i was building a motor that was going to zing to 7000 rpms...but i was only needing to work to 6500 rpms and bought a rpm intake and sold the stealth.

i also did some back to back runs from a torker two intake a the rpm intake .....its posted somewhere in the archieves i believe.....i gain almost 2 tenths on that swap.also during my intake swaps i found the torker two was better then a stock low rise intake even on a car with 2.41 gears the 60 ft times was better then the stock piece and had more mph....not much but it was better...(the torker 2 low rise)

some years ago i did an intake swap from the old torker intake (carb sits at angle) to a victor jr and the pull on the top end was unreal.....i think i gain somewhere around 3 mph maybe 4 just on that swap.....

69ralleygreen: I run 13:1 Ross in a 468ci. Car wt. is 3250# Still sorting out my new ladder bar suspension. Stealth is the more streetable intake with Team G extracting more hp at top end but still good power clear down to 2500rpm. I run Comps 651 pro street roller cam with 950holley hp carb.

thanks guys...mike

I use the Stealth rect. port. It's vacuum threaded hole is easily accessible,whereas the rpm intake is not. I run this on the 439" (4.310x3.76) When this motor was assembled, the machinist said he had to cut a substantial amount off the flanges as they were thicker than other intakes he'd seen. But also remember the heads and block had been cut,so regardless, the flanges also need milling.

70convt396,either intake will be fine IMHO and experience.Even a Performer is good too.I used one of those for awhile,in fact ran my 12.99 with it.I just recently swapped to an RPM,didn't see much if any difference in MPH or ET under the same condtions.I also have 3.31's now too,so the gain won't be obvious.

You guys with the dual plane rectangle port intakes should check out the Brodix 2016.

Might be worth a look.

One point is that GM cut the dual plane divider down when they ran it on the L-88 and ZL-1 motors b/c they didn't want to tool up for a single plane intake for such limited use motors!!

AND from what I have read, it worked pretty good but was on the ragged edge of good fuel/air distribution b/c of measured differences in exhaust port temperatures..

pdq67

Originally posted by pdq67:
One point is that GM cut the dual plane divider down when they ran it on the L-88 and ZL-1 motors b/c they didn't want to tool up for a single plane intake for such limited use motors!!

AND from what I have read, it worked pretty good but was on the ragged edge of good fuel/air distribution b/c of measured differences in exhaust port temperatures..

pdq67 I say that stealth would work really good on the Zl1, compare to the stock, What do you think?...mike

Originally posted by 70convt396:
Any 396's out there? :D Yes. I am running a stealth on the 396 in my 66SS. I went with it because as I understood it, it flows better then the other dual plane intakes out there. My 396 is mostly stock too.

Chris.

I tried both a stealth dual plane and a Dart single plane on my Nova 468. The stealth ET'd the same as the Dart, but gave up 1mph. It worked very well.
I put the Dart back on just because it looked neater.
These were oval ports BTW. And the car ran 11.0's.
Ron

Thanks Chris,ron,4speed and all for ihe info!There are so many ways to skin a cat!Trying to find the best for your application is tough!

I'm using the oval port stealth on my basically stock 396 with good results...Never tried the Edelbrock RPM for back to back testing...I now have a procharger D1-SC running through it with a 750HP carb set up for blow-thru.

In general, the only thing I can pass along is what I was told by engine builder, as I searched the "Stealth" long and hard a year ago, and didn't find that much. He put one on the engine he did for me stating it was "the best all around" intake for a BBC (yes, I know everything like this is subjective opinion and there'll be 100 more out there that state, "no, the ______ is best all around!"). Said it was same basic design they'd cast/run for (? a lot of) years, and it was "the standard". This was not a commercial or something he made a dime more out of than anything else he'd have put on it. I was actually looking for something more "magazine friendly" like an Airgap or whatever, which would have problem let him make a bit more change off of me, but he said I was wasting money and just go with Stealth.

This is on a street driven,'69 oval port, 468, with a 750 vacuum secondary Holley on which I wanted driveabilty, followed by good pull. I'll let you know in a few weeks how it pulls as I'm still on "breakin" right now.

Kinda like the good old Holley, 300-36 true high-rise, SB intake, an old winner imho..

AND I just gotta!!!

Here we go about "skinning that darn cat"...

He, He!!

Merry Christmas..

pdq67

Flye- Please keep me posted -Thanks!
pdq-leave the cat alone!
Merry Christmas to all!
Thanks for all your input, it is a BIG help! :D graemlins/thumbsup.gif
Thanks to any guys in the service out there.We owe you much. And that goes for any Vets as well.
We are a blessed nation. God bless America! graemlins/thumbsup.gif

He, He!!

pdq67