which carbed intake,vic jr or weiend stealth

[fox3streetracer]

i have a ported weiend stealth on my car now,and was wondering if a vic jr would be better for me.here is my combo:

heads:track heat heads,ported to fel-pro 1262 gasket
carb:750 vac holley
cam:f-cam
bore:stock
exhaust:1 5/8 shorties

in the future,i will switch to the following:

heads:same
cam:trick flow stage 2
carb:750 double pumper mec.
bore:347 stroker
exhaust:1 3/4 shorties

car sees mostly weekend duty and drag strip,occasional autocross,and is stick shift

so which intake would be better?

 

[408stroker5.0]

I'd go with an Edelbrock Performer RPM Air Gap, and switch over to a 650cfm Mech. or Vac. Secondaries carburetor (Such as a Barry Grant Speed Demon) to get the most out of your combo....A 750 is a little too big. The Air Gap is rated at 1500-6500 which would probably suite your combo better then a Victor Jr. would as I belive the Victor Jr. performs best from 3500-8500. The great thing about the Air Gap is it performs like a dual plane down low but at the same time performs like a single plane at higher RPM's....Great For a street car.
Dont get me wrong the Victor Jr. intake is great, I'm running one on my 408 and it works beautifully, but I think you'd benefit more with an Air Gap.

 

[RADIALKILLER]

I have seen a similar combo with speed deamon 650 and vic jr intake. It ran really strong.

 

[SmockDoiley]

Ok, Im just going to go down the line to make this to the point, your cam for the 347 is too small, your carburetor is WAY too big, and your intake is way too much. Use a cfm calculator to determine what size carb you need. But it really comes down to cubes and rpm. If your running a 302 or 302 based stroker and your staying under 6500 rpms then your carb and intake are way too big. If you are going to a 347 then your cam choice is too small especially if you are going to use a Vic Jr and 750. I have a 466, and Im only running a 750. Lastly, your heads are going to be too small for a 347. Those heads barely flow for a 302, let alone a stroker. I'd say you need a little more planning since your combo isnt matched well. If you are set on running the vic jr intake and 750, then move up to some larger heads and cam, and except that the car will not be very street friendly.

 

[timewarped1972]

the 750 on a 302 or 347 is fine......IF it had vacuum secondaries....double pumpers are usually more drag oriented......
i'd go with the weaind on the street, victor for if it's mostly drag........

i don't have any issues with those cfm calculators but.....most engines using those calculators show most street engines would need only a 500 cfm carb.....every body runs 600's and up....those calculators i think take into effect the max airflow you need to support a certain hp, which is true, however, it takes longer on the street to get the carb opened all the way up and maxed out air flow wise, if it's a smaller carb....which is why most people run a 600 to 750.....
also a 750 carb, if its vacuum secondary won't give your engine 750 cfm if you don't need it, and it gives you room to grow.....but that double pumper is probably too much if your drivin it on the street......
note.........if you wanna try a vic jr you can always get the pro products knock off for cheap and try it if you don't like it you can sell it....i'm running one on my 65, seems to be ok.....

 

[408stroker5.0]

A 750 on a 302 is NOT fine.....750CFM is TOO MUCH carb Period...especially for fox3streetracer's combo. Of course it will work, and it may work alright but the 650 would outperform and be more responsive then a 750 whether it's a Vac or a Mech. Secondary.
I run a 750cfm Mighty Demon on my 550+HP Street Driven 408....Not too big and not too small....just what it needs.

 

[timewarped1972]

it wont flow 750 cfm's if it doesn't need it...........if it's too big for a 302 why do half the magazine articles and drag racers run 750's on 302's chevy 350's??
i'm not saying it's optimal but........if it's vacuum secondary it shouldn't cause a huge problem.........as for the responsiveness......that also depends on the manifold design.......how much of a signal the venturi's get........hey it's only my experience and opinion i didn't mean to start a cfm debate......people run different things.....

 

[thumper460]

I agree.. the Stealth will rock!! in both bottom end to mid ( street driving) and then still pull HARD to 7500 rpm when you need it!! Seeing how it is already gasket matched to the heads use it, you wont be disapointed!!

347 and the F cam might be a little small, I would advance the F in to a 105* ICL ( 4* advanced) to help the carb with a better pulse on the 347 and that will still be fine!! the 750 is also good on the 347...... I also would learn how to make the vac. secondary ( list 3310) rock and then keep that on the 347 !! The vac carb will always pull better low and the same top end... just have to learn how to do it!! ( and that is the reason we do this.. isnt it??)
Your heads are good also!! I have a customer running mid 11's on his 347 and my ported E7s... so your heads will allow a good et!!

SOOoooo... looks like Stealth is good!! save a buck or two and stay vac on the carb, and bump the cam up a little .. and rock!!

Just me....................
Thumper

 

[FordMuscle]

I dont think you'll gain much over your ported stealth, that is a good intake. I do think you have more to gain in average power with a 650 double pumper. You could try the Vic Jr, and you may see/feel more top end power but your avg power under the curve will drop. Take a look at the motor in this article...347 with AFR 165cc heads. It now runs an RPM Air Gap and makes 400 to the wheels at 6300rpm, runs 10.8/126 in a 2800lb Mustang. The cam is basically a solid roller with the same specs as a TFS stage 2 once you account for lash.
http://www.fordmuscle.com/archives/2005/05/DynoDuel/

 

[pb_paulie_b]

I say stealth over the vic jr. The RPM air gap would be the best choice IMHO.

 

[aleborjas]

I'd go with an Edelbrock Performer RPM Air Gap, and switch over to a 650cfm Mech. or Vac. Secondaries carburetor (Such as a Barry Grant Speed Demon) to get the most out of your combo....A 750 is a little too big. The Air Gap is rated at 1500-6500 which would probably suite your combo better then a Victor Jr. would as I belive the Victor Jr. performs best from 3500-8500. The great thing about the Air Gap is it performs like a dual plane down low but at the same time performs like a single plane at higher RPM's....Great For a street car.
Dont get me wrong the Victor Jr. intake is great, I'm running one on my 408 and it works beautifully, but I think you'd benefit more with an Air Gap.

I agree with you 750 is tooooo big for a 302 and an air gap intake is ok for both engines!

 

[fox3streetracer]

im gonna change the cam to a trick flow stage 2 when i do the 347,thats enough cam isnt it?well,i think ill keep my stealth on there.also,im gonna be doing a blow through turbo or superchager set up,like a s-trim.also was going to do a 150 shot through a plate system.stealth should still be fine right.of course the supercharger or turbo will be several years away unless the money fairy stops by soon lol

 

[69Rcode_Mach1]

Stealth is better than the RPM Airgap I had one. The RPM's ports taper inwards and do not allow for good port work. The stealth is a better choice. The Vic Jr. is too big for that combo unless you want to run a huge huge cam, and is a big nono on a 302. Do not change to a double pumper, stick with a vacuum secondaries carb. I also recommend the Weiand Xcelerator it is an awesome intake and my favorite choice for 289/302 engines. You will not lose much if any down low for the huge boost you will get up top. Single planes are the way to go.