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I am looking at replacing my intake manifold and carb when I freshen up the engine this winter. With some suggestions from Mountainmotor, I am thinking of using the Wieand Stealth manifold with either a Holley 0-80508S elec. choke, vac. sec, 750 (I can get one for $209 new from a local auto store) or an Edelbrock 750. What do you guys think? I am impartial except for the Holleys look cooler. I have heard good and bad about both. I will be using my matching numbers 350, .030 over, Comp. Cams XE256 cam, LT1 heads (came on original engine 487x casting), 9.7:1 Keith Black pistons, and some cleaned up Rams horn exhaust manifolds. Desktop dyno puts me in at about 340-350HP. Bring on the advice!
I love my Edel 750cfm....but then again...on my other car i ran a edel 600cfm for over 10 years.....so i am biased....the 600cfm never needed to be adjusted on a '76 Olds Rocket 350 mounted in a '81 Regal, It was a Daily driver here in WI. From -35 degrees to over 100 degrees...it never was a problem...
I was probably going to go that way (Holley). Mountainmotor has realy been alot of help. I just hope that I get the car done this winter and can send him a picture of it roasting the skins!
OK, dissenting opinion here. This is the car your wife wants to keep stock looking right?
The Weiand Stealth is designed for "large cubic inch small block or a very aggressive street/strip combination." Quote is from Scoggins Dickey catalog.
With the XE256 cam you are maxing out at 5500 rpm. Get an Edelbrock Performer 2101 and use a rejetted Q-Jet. The Q-Jet can feed 400 HP reliability and the driveablity will be much better.
Lars helped me (OK he did all the work) rejet mine and my combo hits 336 HP on Dyno2000 and I get 20 mpg on the highway.
BTW, I am seriously thinking of going to Vortec heads for my rebuild so I may be selling a 2101 cheap. :jester
From: WANTED: '68 rear valance with b/u light assemblies IM, e-mail, or PM me here. Thanks!
Re: Carb choices (SteveG75)
OK, dissenting opinion here. This is the car your wife wants to keep stock looking right?
The Weiand Stealth is designed for "large cubic inch small block or a very aggressive street/strip combination." Quote is from Scoggins Dickey catalog.
With the XE256 cam you are maxing out at 5500 rpm. Get an Edelbrock Performer 2101 and use a rejetted Q-Jet. The Q-Jet can feed 400 HP reliability and the driveablity will be much better.
Lars helped me (OK he did all the work) rejet mine and I my combo hits 336 HP on Dyno2000 and I get 20 mpg on the highway.
BTW, I am seriously thinking of going to Vortec heads for my rebuild so I will be selling a 2101 cheap. :jester
When it comes to aftermarket carbs I prefer Holley over Edelbrock or Carter. I would opt for an original Q-jet over an aftermarket Holley in this case, but I don't know if that is an option.
I have managed to talk her out of completely stock looking :smash: . In e-mails with mountainmotor we were discussing intakes and I wanted the best that I could squeeze under the hood and he said that this would probably be it. I figured that if I am going to replace the intake, I might as well go for the gusto. In looking at some things on weiands site and others they say that with the stealth you will give up a little on the bottom and gain quite alot on the mid range and top end, but the intake will still pull very well from idle on up. I have not totally made up my mind on what I am doing on the intake yet. I do appreciate all of you guys giving me advice. P.S. I have heard good things about the L31 heads. I know that Edelbrock makes a performer and a performer rpm for them.
I sill have everything original, so I still have the qjet on the car right now. I have heard alot of bad things about tuning the qjets though. I am kind of a newbe on actually ripping this stuff apart.
I sill have everything original, so I still have the qjet on the car right now. I have heard alot of bad things about tuning the qjets though. I am kind of a newbe on actually ripping this stuff apart.
Get the Doug Roe book on Q-Jets. Then get Lars tech paper from http://www.corvettefaq.com . The Q-Jet can be very daunting but when tuned right is very responsive, powerful and economical. It is basically a 750+cfm mechanical secondary carb that uses vacuum to control the primary metering rods and an air valve to control secondary flow preventing bogging.
I am keeping mine because it lets me use the stock cold air induction and it's fun to run something different. :yesnod:
Mountain had mentioned that the stock qjet should work fine with this setup as well. I guess that I will re-evaluate my options again. Would you guys recomend using my original qjet (works fine) or get a new Edelbrock (if I stick with the qjet)?
Just my 2 cents but the Edelbrock RPM manifold is hard to beat. I chose the Edelbrock Performer 750. I'm not technical enough to get a Holley working right. Edelbrock was very easy to setup and tune in. However, I think it is the general consensus that the Speed Demon is the new bad boy on the block. They sure do look cool, and thats gotta be worth another 100 horses :lol:
Just my 2 cents but the Edelbrock RPM manifold is hard to beat. I chose the Edelbrock Performer 750. I'm not technical enough to get a Holley working right. Edelbrock was very easy to setup and tune in. However, I think it is the general consensus that the Speed Demon is the new bad boy on the block. They sure do look cool, and thats gotta be worth another 100 horses :lol: :seeya
he may have to worry about hood clearance in order to use a RPM setup..
unless he wants to get a drop-base air cleaner to top it off...
If you plan on driving your car fast around a corner, the Edelbrock is a poor choice. The design will not deliver gas in a hard corner. It is not a good carb for a sports car.
If you plan on driving your car fast around a corner, the Edelbrock is a poor choice. The design will not deliver gas in a hard corner. It is not a good carb for a sports car.
I've never heard this one before.....if there was a problem in a hard turn with delivering fuel I would think it would be due to the fuel pump, filter or line layout (kink) then with the carb ? I never ever had an issue powering through a hard curve?......tires maybe with traction...but never with the gas delivery?
If you plan on driving your car fast around a corner, the Edelbrock is a poor choice. The design will not deliver gas in a hard corner. It is not a good carb for a sports car.
I've never heard this one before.....if there was a problem in a hard turn with delivering fuel I would think it would be due to the fuel pump, filter or line layout (kink) then with the carb ? I never ever had an issue powering through a hard curve?......tires maybe with traction...but never with the gas delivery?
just my 2 cents
That is true....If you kick it while turning sharp it will do the same thing!! :cheers: