Single Plane Intakes
Thread Starter
Burning Brakes
Joined: Nov 2003
Posts: 990
Likes: 0
From: North Texas
Single Plane Intakes
All I ever hear is that the new single planes work as good as the dual planes. So I want to see if I can make one fit.
Ok, I'm out looking at the Victor Jr on Edelbrock's web page but I don't understand the way they are presenting the dimensions.
Can someone give me that against another intake such as the RPM?
Ok, I'm out looking at the Victor Jr on Edelbrock's web page but I don't understand the way they are presenting the dimensions.
Can someone give me that against another intake such as the RPM?
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
The Victor Jr. is similar to the RPM in height. At least the LT-1/BB hood is needed for SB.
Much better: The 76-79 med. rise hood allows the Victor Jr, RPM & others on SB w/ aftermarket (about 1 1/4") dropbase filter (about 3") & Holley.
Much better: The 76-79 med. rise hood allows the Victor Jr, RPM & others on SB w/ aftermarket (about 1 1/4") dropbase filter (about 3") & Holley.
Thread Starter
Burning Brakes
Joined: Nov 2003
Posts: 990
Likes: 0
From: North Texas
If *CH is Carb Height, then the Victor JR is shorter than RPM Air Gap by .15" and only .53" taller than the Performer.
Now all I need to figure out is the front and rear heights.
Now all I need to figure out is the front and rear heights.
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Dual plane manifolds are good for automatic transmission cars because the longer runners help improve torque which helps with the usually wider spread gear ratios than the manual shifts.
Because the gear ratios are usually closer in the manual transmissions, the rpms don't drop as far when changing gears, so you don't need the additional torque as much, which is why the open plenum works well for them.
Because the gear ratios are usually closer in the manual transmissions, the rpms don't drop as far when changing gears, so you don't need the additional torque as much, which is why the open plenum works well for them.
Thread Starter
Burning Brakes
Joined: Nov 2003
Posts: 990
Likes: 0
From: North Texas
Ok with a relatively mild 383 (TFS heads, HR 227*/230*) with a TH400 - 2500 stall and 3:36 gears, - it's not necessarily a high RPM monster but it will spend most if it's life somewhere between 2000 and 5500 with normal driving and a couple of trips to the track a year.
Is there a benefit to a single plane for me?
Is there a benefit to a single plane for me?
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
The larger single planes that have large ports made to mate to large heads and advertise operation range of 4500-8500 would not be the same story.
In street single planes the smaller plenum Weiand Team G's would be hard to beat. The lowest RPM weiand single plane with a 1/2 thermal wood open spacer makes a nice intake.
Last edited by gkull; Jan 15, 2007 at 06:45 PM.
Thread Starter
Burning Brakes
Joined: Nov 2003
Posts: 990
Likes: 0
From: North Texas
I would agree with gkull. I was just referrencing a lot of post which questions the dual plane versus a single plane.
Funny that you mention the Team G - from my research, it is .05" lower at the carb pad than the Performer which would leave room in most cases for that 1/2 spacer. The Team G appears to have larger runners versus the Victor Jr which will slow the velocity some.
Right now it more of a matter of, what can I get to fit.
Funny that you mention the Team G - from my research, it is .05" lower at the carb pad than the Performer which would leave room in most cases for that 1/2 spacer. The Team G appears to have larger runners versus the Victor Jr which will slow the velocity some.
Right now it more of a matter of, what can I get to fit.
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
I personally would never put a dual plane on any performance engine.. OK, if the engine is very mild, a dual plane is ok but on any performance engine, the single plane will outperform the dual plane throughout the RPM range.. If there's a loss in mid range, it's so little that you can't even notice. On my old 383 engine, I tried several intakes and the single planes outperformed the Performer RPM noticeably.. The only time that a dual plane might get you better results is if you have a performance engine and a too low stall speed in your automatic transmission.. (i. e. you have a cam with 240 - 250 degrees .05 duration and a 2400 stall).. The Performer RPM will get you better results in that case.. However, if you use the appropriate stall etc. the single plane is always better if the engine is built for performance..
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Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
That is true but ONLY if the converter doesn't have the appropriate stall for the engine. With the correct converter, the RPM will be shifted to the ideal RPM where the cam makes power.. ONLY if there's a mismatch between converter and engine the dual plane will be better.. (see also my previous post)
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
I would agree with gkull. I was just referrencing a lot of post which questions the dual plane versus a single plane.
Funny that you mention the Team G - from my research, it is .05" lower at the carb pad than the Performer which would leave room in most cases for that 1/2 spacer. The Team G appears to have larger runners versus the Victor Jr which will slow the velocity some.
Right now it more of a matter of, what can I get to fit.
Funny that you mention the Team G - from my research, it is .05" lower at the carb pad than the Performer which would leave room in most cases for that 1/2 spacer. The Team G appears to have larger runners versus the Victor Jr which will slow the velocity some.
Right now it more of a matter of, what can I get to fit.
Racer
Joined: Jun 2006
Posts: 309
Likes: 0
I would agree with gkull. I was just referrencing a lot of post which questions the dual plane versus a single plane.
Funny that you mention the Team G - from my research, it is .05" lower at the carb pad than the Performer which would leave room in most cases for that 1/2 spacer. The Team G appears to have larger runners versus the Victor Jr which will slow the velocity some.
Right now it more of a matter of, what can I get to fit.
Funny that you mention the Team G - from my research, it is .05" lower at the carb pad than the Performer which would leave room in most cases for that 1/2 spacer. The Team G appears to have larger runners versus the Victor Jr which will slow the velocity some.
Right now it more of a matter of, what can I get to fit.
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
The Victor Jr. only wakes up in the midrange if you port and match it.. The runners are kinda small as are the ports.. However, the ports on the Victor Jr. are meant to be ported and matched..
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I would agree with gkull. I was just referrencing a lot of post which questions the dual plane versus a single plane.
Funny that you mention the Team G - from my research, it is .05" lower at the carb pad than the Performer which would leave room in most cases for that 1/2 spacer. The Team G appears to have larger runners versus the Victor Jr which will slow the velocity some.
Right now it more of a matter of, what can I get to fit.
Funny that you mention the Team G - from my research, it is .05" lower at the carb pad than the Performer which would leave room in most cases for that 1/2 spacer. The Team G appears to have larger runners versus the Victor Jr which will slow the velocity some.
Right now it more of a matter of, what can I get to fit.
The plenum volume is less than a VJ and claimed operational range of up to 7200. If you look at the higher RPM units all Weiand did is to increase the carb height adding plenum length before the A/F has to make the turn towards the ports
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Intakes are cheap - try several.
It only takes a day to change the intake. Plenty of good used intakes at the swapmeets and ebay for cheap - but you have to look. Sell the used intakes again if u don't like them. Keep trying until u find the right intake for your combo. Heck buy a Gtech meter and flog each intake using the same road - quick and cheap way just to compare against each other.
Just from what i've read in mags the Edel RPM would hold its own in an eng combo like yours and is somewhat fail safe if your not really sure.
Remember u should run less cfm carb with a single plane because each venturi sees more consistant flow - smaller carb will increase signal for better response.
Good luck.
cardo0
Just from what i've read in mags the Edel RPM would hold its own in an eng combo like yours and is somewhat fail safe if your not really sure.
Remember u should run less cfm carb with a single plane because each venturi sees more consistant flow - smaller carb will increase signal for better response.
Good luck.
cardo0
Racer
Joined: Jan 2005
Posts: 332
Likes: 7
From: In the shop most of the time,,, And it BEER TIME somewhere
[QUOTE=cardo0;1558534677]It only takes a day to change the intake.
Good luck.
cardo0[/QUOTE My plan to change intakes 1
I pull distributor out 2 I look at the center intake bolts and wonder why they are such a pain in the a$$ to get out, 3 drain the radiator on the shop floor, I forgot the drain pan, 4 me and a buddy go to the parts store for oil dry, OH Yeah while we are out , GET MORE BEER I clean up mess on floor, 5 take out more intake bolts, wrench slips and now I have thrown the cheap wrench that my brother in law gave me because he lost my Snap On 9 1/16th 6 Pull intake up and dump a bunch of water in the intake valley,DAMN ,7 NOW I gotta go back to the parts store for oil change stuff cause the oil filter on the bench is for the wifes mini van 8 2nd trip to the beer store At this point my buddys wife is mad and he leaves for the mall, 9 After he leaves I find out he has the only 9 1/16 th wrench in his back pocket cause he pulled the last 4 bolts out while i duct taped a paper towel on my broken fingers, Really need a beer now Oh Well,,,, I can finsh it tommorow Sorry for the hijack, but it mostly true,,,
Good luck.
cardo0[/QUOTE My plan to change intakes 1
I pull distributor out 2 I look at the center intake bolts and wonder why they are such a pain in the a$$ to get out, 3 drain the radiator on the shop floor, I forgot the drain pan, 4 me and a buddy go to the parts store for oil dry, OH Yeah while we are out , GET MORE BEER I clean up mess on floor, 5 take out more intake bolts, wrench slips and now I have thrown the cheap wrench that my brother in law gave me because he lost my Snap On 9 1/16th 6 Pull intake up and dump a bunch of water in the intake valley,DAMN ,7 NOW I gotta go back to the parts store for oil change stuff cause the oil filter on the bench is for the wifes mini van 8 2nd trip to the beer store At this point my buddys wife is mad and he leaves for the mall, 9 After he leaves I find out he has the only 9 1/16 th wrench in his back pocket cause he pulled the last 4 bolts out while i duct taped a paper towel on my broken fingers, Really need a beer now Oh Well,,,, I can finsh it tommorow Sorry for the hijack, but it mostly true,,,
Last edited by BLACK SHARK; Jan 16, 2007 at 09:49 AM.