3rd Gen / L98 Engine Tech 1982 - 1992 Engine Related

Which manifold to go with. Opinions apreciated

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Old Feb 1, 2003 | 02:29 AM
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DarthIROC's Avatar
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From: Teeter-tottering between Brilliance and Insanity
Question Which manifold to go with. Opinions apreciated

Ok a realative of mine owns Biggs Carb shop in which they basically take Holley Carbs and make them work better. Anyway to get to the point this company is building me a Holley Double Pumper 650 cfm. I was gonna have him build me a vacuum sec one but I went ahead and bought a 2400 stall so Im going mechanical.

I have 2 immediate intake choices.

1. I have that someone gave to me a Weind dual plane aluminnum intake. It looks to be just a basic SBC intake like maybe one step up from a stocker.

or

2. A dude in the neighborhood is willing to sell me an Edelbrock Torker II for $50. For those that dont know the Torker is a single plane and Ive seens its name come up a few itmes in Hot Rod and what not so it muct be a pretty good one.

What do you guys think? (other than leave the TPI on we've been thru this already)
Old Feb 1, 2003 | 02:57 AM
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Go with the Edelbrock I think you will be happier. I have used Weind a few times.... they arnt horrible manifolds by far but I have been happier with the results Edelbrock makes.
Old Feb 1, 2003 | 10:00 AM
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How big are you going on the carb?

A 650 vac secondary is a good street carb but its surely not for racing based on what it seems like you wanna do.
Old Feb 1, 2003 | 11:34 AM
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Exclamation

Also remember, there is a reason the Torker is no longer produced. I would say, with that carb, go with the dual plane Weiand. Is it a Stealth, Action+, or ... ? The reason Hot Rod used the torker was to get peak dyno number as high as possible, so the sponsor looks good. The dual plane will give you the neck snapping torque off the line, with a broader torque curve (from idle - ~5000). The single plane will want to stay in the upper rpm range (3500-~5500).
Old Feb 1, 2003 | 04:45 PM
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Personally, I would take the weind, you have a nice cam, and it probably rev's high, and the torquer wouldn't give you the flow you would need up there. Also with such a big cam you probably have some lag in your powerband, the weind would help that, and the torquer would make it worse.
Old Feb 1, 2003 | 10:55 PM
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From: Teeter-tottering between Brilliance and Insanity
Originally posted by MRZ28HO
Also remember, there is a reason the Torker is no longer produced. I would say, with that carb, go with the dual plane Weiand. Is it a Stealth, Action+, or ... ? The reason Hot Rod used the torker was to get peak dyno number as high as possible, so the sponsor looks good. The dual plane will give you the neck snapping torque off the line, with a broader torque curve (from idle - ~5000). The single plane will want to stay in the upper rpm range (3500-~5500).
Um its not a Torker its a Torker II and they are still produced I was just looking in Summit to see what one would cost new.

The weind is kinda old and it doesnt say stealth or anything on it, thats why I said it just looks like a stage one so to say upgrade from stock So I thik Im leaning towards the Edelbrock at this point especially since I think I can get it for less than $50 now cause i told the guy I was kinda leaning away since he painted it black. The RPM range according to Summit on the Torker II is 2500-6500 and my cam is 1500-6500 so thats pretty close.

and someone asked me what kinda carb I was goin with I thought I put it in the initial post but incase I didnt Its a Holley 650 double pumper built by a performance carb shop.
Old Feb 2, 2003 | 12:55 AM
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Well, I'm glad you said 650 with that short single plane manifold. It should give up very little down low while pulling hard on top. A larger carb tho would start hurting air velocity and the signal to the venturi b/c each cylinder is seeing the entire carb not half like a dual plane. Nice combo
Old Feb 2, 2003 | 12:43 PM
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Cool

Originally posted by DarthIROC
Um its not a Torker its a Torker II and they are still produced I was just looking in Summit to see what one would cost new.
Ah, that is different. The Torker II is way better than the old/original Torker. If the weiand has no marking, it must be very old. Since we are now comparing old tech (weiand) to new tech (Edelbrock), I'd have to change my opinion to the edelbrock.

Last edited by MRZ28HO; Feb 2, 2003 at 10:33 PM.
Old Feb 2, 2003 | 08:26 PM
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A friend of mine has one of the Weiand manifolds with no other markings, it appears to be an early stealth, oh, also cast into the intake(near the Weiand) is "say why-and" lol
Old Feb 2, 2003 | 10:17 PM
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ok, this may not be a perfect comparison but I will share it anyway. I put a L98 block in my 87 and used a factory alluminum q-jet manifold. I used a G-tech for testing and averaged around a 14.8 at 101 mph. I now have a performaer rpm and am only running like a tenth faster at 14.7 but at 103 mph and have had quite a few runs at 105 mph. Now keep in mind G-tech takes actual mph so my trap speed is probably closer to 97 mph which backs up what I actually ran at the track with the stock manifold.

So what is my point? Either way you go you probably won't gain that much in actual speed or quickness. I have heard the single plains don't run well for daily driving from stop light to stop light. But with the stall converter that may not be true. So in either case don't stress to much about it. The cam and heads are probably gonna be the limiting factor anyway.
Old Feb 2, 2003 | 10:36 PM
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Originally posted by 87ROC
ok, this may not be a perfect comparison but I will share it anyway. I put a L98 block in my 87 and used a factory alluminum q-jet manifold. I used a G-tech for testing and averaged around a 14.8 at 101 mph. I now have a performaer rpm and am only running like a tenth faster at 14.7 but at 103 mph and have had quite a few runs at 105 mph. Now keep in mind G-tech takes actual mph so my trap speed is probably closer to 97 mph which backs up what I actually ran at the track with the stock manifold.

So what is my point? Either way you go you probably won't gain that much in actual speed or quickness. I have heard the single plains don't run well for daily driving from stop light to stop light. But with the stall converter that may not be true. So in either case don't stress to much about it. The cam and heads are probably gonna be the limiting factor anyway.
Sound like, in your test, you had more traction issues with the RPM manifold than the GM unit. Which means the RPM manifold gave you better low-end torque (typically does). The single plane actually cause the power band to narrow and move up in the rpm range, while increasing HP. Whereas the dual planes, give you a broad power range throughout the rpm band, and increase low-end torque. It is all about what you want out of your car.

Originally posted by DarthIROC
I find your lack of faith disturbing

86 IROC .040 305 TPI; Hi performance 305 Heads shaved .040 1.97 valves; Shorty Headers 3 in; exhaust with Flowmaster; Lunati 259/271 .500/.515 cam; Highly Modified 700-R4 ; B&M Slapshifter; 3.73 Rear; Accel Plugs and Wires; Cragar 15x7 front 15x10 rear
I just noticed this ... is that advertised duration or duration @ .050" lift? If it is duration @ .050" lift, that cam is WAAAYYY too big for a 311 CID TPI. I'd run something in the 210/220 (.490"-.520" lift) range. IMHO

Last edited by MRZ28HO; Feb 2, 2003 at 10:41 PM.
Old Feb 2, 2003 | 11:34 PM
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From: Teeter-tottering between Brilliance and Insanity
Originally posted by MRZ28HO
I just noticed this ... is that advertised duration or duration @ .050" lift? If it is duration @ .050" lift, that cam is WAAAYYY too big for a 311 CID TPI. I'd run something in the 210/220 (.490"-.520" lift) range. IMHO
I agree, the cam was amazing in 2nd gear but it bogged me off the line a bit. Im now going to a 350, I just found this out today and Im putting my cam, heads and all my other perfom parts from the 305 on there. So now take any opinions you have on this and apply them to a stock bore 350 with the same cam and valve size and all.
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