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Re: Performer RPM intake or not?
[Re: Twostick]
#1696121
11/08/14 07:40 PM
11/08/14 07:40 PM
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Joined: Feb 2005
Posts: 4,334
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,334
Prospect, PA
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Quote:
He figured there wasn't enough difference up to that engine speed between a stock one and any of the standard rise intakes ie Performer, C4B, Weiand 360 deg etc to bother changing one unless you wanted to save the weight difference.
Another respected builder in my area has found the same thing dyno testing the regular rise intakes. He told a buddy of mine "pile them all on the floor, there isn't 10 hp between the lot of them".
Interesting. Personnel experience is that if you have a 350 -400 hp ish motor, there is pretty measurable difference between a stock intake and a CHB4 and a six pack, all shifting around the 5500 rpm range. Like 2-3 tenths and 2-3 mph. 
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Re: Performer RPM intake or not?
[Re: Colin Frolick]
#1696123
11/08/14 08:31 PM
11/08/14 08:31 PM
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Joined: Jan 2003
Posts: 28,114
Irving, TX
feets
OP
Senior Management
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OP
Senior Management
Joined: Jan 2003
Posts: 28,114
Irving, TX
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Which intake is that?
How much room between the air horn and the air cleaner lid? It doesn't do any good if the air can't get in the carb.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Performer RPM intake or not?
[Re: BSB67]
#1696124
11/08/14 08:34 PM
11/08/14 08:34 PM
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Joined: May 2003
Posts: 6,640
Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,640
Downtown Roebuck Ont
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Quote:
Quote:
He figured there wasn't enough difference up to that engine speed between a stock one and any of the standard rise intakes ie Performer, C4B, Weiand 360 deg etc to bother changing one unless you wanted to save the weight difference.
Another respected builder in my area has found the same thing dyno testing the regular rise intakes. He told a buddy of mine "pile them all on the floor, there isn't 10 hp between the lot of them".
Interesting. Personnel experience is that if you have a 350 -400 hp ish motor, there is pretty measurable difference between a stock intake and a CHB4 and a six pack, all shifting around the 5500 rpm range. Like 2-3 tenths and 2-3 mph.
I think he was comparing stone stock cams and heads which are pretty much out of breath before 5500 anyway. If the engine can't take advantage of whatever advantage the "better" manifold offers because of this then the stock one doesn't look so bad in comparison.
Kevin
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Re: Performer RPM intake or not?
[Re: feets]
#1696128
11/09/14 03:45 PM
11/09/14 03:45 PM
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Joined: Jan 2011
Posts: 16,166
Central Florida
larrymopar360
Stud Muffin
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Stud Muffin
Joined: Jan 2011
Posts: 16,166
Central Florida
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I was surprised and relieved when an air gap fit with the stock 4 barrel air cleaner on my '89 Diplomat with a 410 smallblock. I really wanted the look of the stock air cleaner but thought I'd have to use a drop base one. There isn't any room to spare, but it fit. Now you have a different car of course, but by the looks of the hood you have as much room as I did.
As far as linkages and all. Wouldn't you be able to reuse all the stock 4 barrel stuff?
Facts are stubborn things.
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Re: Performer RPM intake or not?
[Re: feets]
#1696132
11/10/14 03:29 PM
11/10/14 03:29 PM
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Joined: Jan 2005
Posts: 12,494
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,494
Kalispell Mt.
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I bet your converter stalls around 2000RPM worrying about anything less than that is futile. In light of that I would grab the RPM and make it work. By 2500 that intake will be making more power than the stocker and losing 30# (up high to boot!) is not going to hurt that beast one bit.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Performer RPM intake or not?
[Re: 440child]
#1696134
11/10/14 06:39 PM
11/10/14 06:39 PM
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Joined: Jan 2003
Posts: 75,326
A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,326
A gulag near you.
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Quote:
Quote:
indy dual plane
that aircleaner is very drop base. 16 x 3" filter, yes it clears the carb. the top is right up under the hood.
http://www.amazon.com/Allstar-ALL26096-Diameter-Aluminum-Carburetor/dp/B006K8IBS4
Sorry for this hijack, but I just gotta know.  Is that Indy a spreadbore manifold, or did you mod it to fit that carb? Thanks for enlightening me. 
The Indy is not a spreadbore and WHAT carb is under there , I see no mention of one ???
There is probably enough meat in the intake flange to make it fit a spread bore.
The intake is really designed to be put on a head with a max wedge port window, but it is delivered with a stock port window, the runner is max wedge size and doesn't really taper to stock port window so the flow isn't as good as it could be.
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Re: Performer RPM intake or not?
[Re: feets]
#1696138
11/11/14 10:58 AM
11/11/14 10:58 AM
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Joined: Jan 2003
Posts: 3,495
Annapolis, MD, USA
Vert
master
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master
Joined: Jan 2003
Posts: 3,495
Annapolis, MD, USA
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Feets,
I went to the garage, cleared stuff off a 440 (with E heads) and measured from the valley pan (rear side) to the top of the carb pad on a Performer RPM. 6 3/8 inches using this square.
You should do the same on yours. Subtract yours from my 6 3/8 to get your expected height increase.
Make some pencil-diameter spikes of modeling clay about 2 inches long. Stick them on your current aircleaner front/rear/left/right. Close the hood gently, open the hood gently, measure the spikes to see your current clearance. Obviously hope for a number greater than the height difference.
Funny how I can do this, and yet not keep my car on the road.
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