[Dan Orgill]

Just wanted some other opinions on this;

I was speaking to an engine builder yesterday regarding my 396, and his opinion was that he would never use a Weiand Stealth on a 396/402 as he felt the runners are too big, and I'd be giving up " a ton " of bottom end.

This is more for curiousity, as I already have the intake and had it Jet Hot coated, so $$ wise, it's getting used.

 

[dreis454]

I've never heard that one before.

use it.

 

[wildman926]

They may be big, but it is still a dual plane to make more torque. I would use it and not think twice about it.

 

[Chris R]

I have been using a Weiand Stealth on my 396 for almost 10 years now. I feel it performs great personally.

 

[Rmchevelle]

I was speaking to an engine builder yesterday regarding my 396, and his opinion was that he would never use a Weiand Stealth on a 396/402 as he felt the runners are too big, and I'd be giving up " a ton " of bottom end.

I wonder if he's seen this on a dyno(?). He may have a valid point. Does a 396 need the same airflow as a 427, 454 or larger? Would love see his dyno #'s if he has them.

 

[Mikeys69]

That little 396 is just to small...lol

 

[Dan Orgill]

I wonder if he's seen this on a dyno(?). He may have a valid point. Does a 396 need the same airflow as a 427, 454 or larger? Would love see his dyno #'s if he has them.

I never got that far into the conversation with him, but he was dead set against that manifold on a 396. But, as stated earlier, I've already bought it, had it coated and spent the $$$, so it's goin' on.

And really, my last experience behind a big block was a bone stock 396/350hp with headers and a quality exhaust system:boring:. It seemed like a powerhouse back then ( 1992-95 ) so my new mill will probably seem like a complete animal to me, with re-worked 063 heads, a Lunati 60203, Weiand intake and Holley 770 Street Avenger & headers. 3" headpipes with Magnaflows to 2 1/2 tails will round things out.

 

[Dan Orgill]

That little 396 is just to small...lol

Ya, I know, da baby rat!

 

[30-A rider]

If your 396 was built with 8:1 compression, a low lift, short duration smog type motor like the earlier 402's Id say maybe there is a little merrit to what your engine builder states.

But, considering your cam, headers, exhaust, and head modifications I think the stealth just like and Edelbrock performer RPM is actually the two best choices you could have made.

Maybe your engine builder is confused about your manifold. Has he seen it?

 

[Dan Orgill]

If your 396 was built with 8:1 compression, a low lift, short duration smog type motor like the earlier 402's Id say maybe there is a little merrit to what your engine builder states.

But, considering your cam, headers, exhaust, and head modifications I think the stealth just like and Edelbrock performer RPM is actually the two best choices you could have made.

Maybe your engine builder is confused about your manifold. Has he seen it?

Sorry if I confused anyone, MY builder is fine with the Stealth. This was another builder I was talking to during the course of trying to track down some parts.

 

[Twins Fan]

I guess it's a good thing you didn't go with that engine builder then. I think the Stealth will work great for your combo.

 

[Dan Orgill]

Brad, I'm no performance guru, so even if my motor does give up some bottom end with that intake, it's not like I'd notice. A dyno with each intake would tell the story, but I have no intention of doing that.

 

[mr 4 speed]

Dan,I wouldn't give your choice of intake a second guess.
I highly doubt your engine builder has a timeslip of a Stealth vs. another intake to prove his statement.
BTW, BB Mike runs a Stealth on his 414 BBC and uses the same cam as me.
His combo runs pretty strong.

 

[Dave Hopkins]

If your primary interest is 2,000 -3,500 RPM I would say he had a valid point, if your going to spin it up in the 5,000 RPM range I would stay where you are.
Related story, several years ago I had a 90ish chev 454 1 ton dually. Muffler fell apart inside & plugged and I torched a piston getting home, so engine out and apart and it was OMG look at those heads! Truck heads had tiny ports! So I put on generic pasenger car heads and intake along with fresh bore, pistons yada yada yada. It ran good but not like it should as a truck it was hauling a camper & such over the mountains and it needed grunt at 2,500. Later I got smarter and put the peanut ports back on and it was a huge improvment

 

[ddeennis]

well lets just look at it this way, im sure it better then the torker 2 intake, or the streetmaster intake and how about the tarantula intake, and even the low rise cast iron units.

i think every intake has there good points and bad points and i think given the same kinda design wether its single plan or dual plane, the worst to the best there might be 10-15 hp give or take for its own group.

in my own track test with intakes i have found my own car makes best hp with rpm intake, over the low rise cast unit, high rise cast unit, torker 2 and the streetmaster. i tested all these intake on my own car and the rpm made the best mph thru the traps.

 

[wildman926]

Your combo is going to scream!! Please let us know how it turns out.

Again, the Stealth is still a dual plane intake, so you are not going to lose much down low if any.

The ONLY thing I would change in your setup is the exhaustand go 2.5", unless you are planning on going larger (496 +) later. Otherwise, this is where you will lose low end torque.

 

[Dan Orgill]

Your combo is going to scream!! Please let us know how it turns out.

Again, the Stealth is still a dual plane intake, so you are not going to lose much down low if any.

The ONLY thing I would change in your setup is the exhaustand go 2.5", unless you are planning on going larger (496 +) later. Otherwise, this is where you will lose low end torque.

Building the 3" headpipes just in case of a future upgrade...your thought process is bang on!

 

[mr 4 speed]

Dan,if you use 3" headpipes and 18" or 22" case mufflers with 2.5" tailpipes I think you will be very happy with the results and it certainly won't be too big for your 396..plus it will be an exhaust system you bolt on and forget about..it will handle a 454+ no problem.

 

[Guest]

I wonder if he's seen this on a dyno(?). He may have a valid point. Does a 396 need the same airflow as a 427, 454 or larger? Would love see his dyno #'s if he has them.

Well actually I do have a dyno, I have been questioned for the high torque numbers that my engines make in the past, either I know something or I dont. When I set out to build an engine in my shop there is so much labor involved, I dont compromise the combination by puting the wrong intake on the engine, theres just to much time involved. I like the stealth a lot, but not on a 396, you can run it but your just going to be down on torque, just remember not many people believe my torque numbers, but just what if there correct, I look at the torque on a street engine before I look at the HP. Good luck

 

[Guest]

Just wanted some other opinions on this;

I was speaking to an engine builder yesterday regarding my 396, and his opinion was that he would never use a Weiand Stealth on a 396/402 as he felt the runners are too big, and I'd be giving up " a ton " of bottom end.

This is more for curiousity, as I already have the intake and had it Jet Hot coated, so $$ wise, it's getting used.

Well Dan not one person agreed with me, if a 570 hp 475 cid big block is down on torque with a weiand stealth over a performer rpm air gap, wouldnt be safe to say a 396 would be down on torque with the stealth over an air gap? If you have and want to save money use it, if you want your 396 to be the best it can be dont use it. To the forum people all I do is develope big blocks, I dyno test 6 times a month, and test and test different combinations.