Moding a dual plane intake?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Long79 · 11-08-2010, 10:29 AM

Anyone ever tried to take a normal dual plane and notch it out like the Edelbrock Performer RPM Air-Gap Intake, in order to help out on top end any?? Seems to me it could be done pretty easily with a dremel.

donut · 11-08-2010, 10:44 AM

AFAIK, unless it's cast as such, you'll be into the runners before you accomplish your goal.

turp mcspray · 11-08-2010, 11:17 AM

If you have room, add a spacer. It's a lot easier, and reversible.

*Ticker* · 11-08-2010, 11:36 AM

The old Chevy Power Manual recommended this back in the day with the LT-1 intake. Noted that it only added power above 5500 RPM.

I'd expect with a current generation manifold there's very little gain if any.

Long79 · 11-08-2010, 03:00 PM

Good ideas guys, IDK why I just didn't think of a spacer, lol

*stich626* · 11-08-2010, 04:55 PM

go on thew web
D/F ed. of hot rod and car craft
has this on the web..
look for intake shoot out.
carjunkie tv

and yes you can remove some of the divider..

good luck..

*Ticker* · 11-08-2010, 05:00 PM

I think I misread the original post...I thought you were asking about cutting a notch in the divider...but you were wondering about hogging out under the runners???

Nooooooo.

Long79 · 11-08-2010, 06:10 PM

I am talking about notching the divider in the plenum

*Ticker* · 11-08-2010, 07:04 PM

Ah, OK

I thought I was way off base

bradh · 11-08-2010, 11:04 PM

Quote:

Originally Posted by stich626

go on thew web
D/F ed. of hot rod and car craft
has this on the web..
look for intake shoot out.
carjunkie tv

and yes you can remove some of the divider..

good luck..

I had that magazie a few years ago and for the life of me I can't find it or a link to the article on the web. If anyone has a link post it up.

60ratrod · 11-08-2010, 11:26 PM

i know that some intakes used to come with the notch from their respective factories back a while ago, and may still do. i just haven't looked at intakes lately since i decided to go with tpi. but i thought that the runners were separate for a reason? not trying to say not to notch the plane divider, just trying to figure out where the gains might be. doesn't the divider help power down low where us truck guys tend to like it??

69 longhorn · 11-08-2010, 11:48 PM

The divider does help with low end power.....I wouldnt cut the intake. If you like to experiment, drop a 3/4' open spacer on it.....or get a 3/4", 4 hole spacer to experiment with. You can cut the center out & modify as needed. crazyAl

11-08-2010, 10:29 AM	#1
Long79 Registered User Join Date: Oct 2010 Location: Southport, NC Posts: 45	Moding a dual plane intake?? Anyone ever tried to take a normal dual plane and notch it out like the Edelbrock Performer RPM Air-Gap Intake, in order to help out on top end any?? Seems to me it could be done pretty easily with a dremel. __________________ 79, C-10, long bed, Std cab, 2wd, 305, 4 barrel Q-jet Turbo 350. How does it work? P.F.M. How do you fix it? B.F.H.

11-08-2010, 10:44 AM	#2
donut Registered User Join Date: Aug 2009 Location: S.C. Posts: 1,593	Re: Moding a dual plane intake?? AFAIK, unless it's cast as such, you'll be into the runners before you accomplish your goal. __________________ '86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold ) I'm kinda like duct tape- no real purpose, but handy to have around.

11-08-2010, 11:17 AM	#3
turp mcspray Registered User Join Date: May 2007 Location: Rapid City South Dakota Posts: 2,359	Re: Moding a dual plane intake?? If you have room, add a spacer. It's a lot easier, and reversible. __________________ Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299

11-08-2010, 11:36 AM	#4
Ticker Account Suspended Join Date: Oct 2009 Location: Sammamish, WA Posts: 2,404	Re: Moding a dual plane intake?? The old Chevy Power Manual recommended this back in the day with the LT-1 intake. Noted that it only added power above 5500 RPM. I'd expect with a current generation manifold there's very little gain if any.

11-08-2010, 03:00 PM	#5
Long79 Registered User Join Date: Oct 2010 Location: Southport, NC Posts: 45	Re: Moding a dual plane intake?? Good ideas guys, IDK why I just didn't think of a spacer, lol __________________ 79, C-10, long bed, Std cab, 2wd, 305, 4 barrel Q-jet Turbo 350. How does it work? P.F.M. How do you fix it? B.F.H.

11-08-2010, 04:55 PM	#6
stich626 Account Suspended Join Date: Sep 2010 Location: hingham ma Posts: 1,721	Re: Moding a dual plane intake?? go on thew web D/F ed. of hot rod and car craft has this on the web.. look for intake shoot out. carjunkie tv and yes you can remove some of the divider.. good luck.. Last edited by stich626; 11-08-2010 at 04:55 PM.

11-08-2010, 05:00 PM	#7
Ticker Account Suspended Join Date: Oct 2009 Location: Sammamish, WA Posts: 2,404	Re: Moding a dual plane intake?? I think I misread the original post...I thought you were asking about cutting a notch in the divider...but you were wondering about hogging out under the runners??? Nooooooo.

11-08-2010, 06:10 PM	#8
Long79 Registered User Join Date: Oct 2010 Location: Southport, NC Posts: 45	Re: Moding a dual plane intake?? I am talking about notching the divider in the plenum __________________ 79, C-10, long bed, Std cab, 2wd, 305, 4 barrel Q-jet Turbo 350. How does it work? P.F.M. How do you fix it? B.F.H.

11-08-2010, 07:04 PM	#9
Ticker Account Suspended Join Date: Oct 2009 Location: Sammamish, WA Posts: 2,404	Re: Moding a dual plane intake?? Ah, OK I thought I was way off base

11-08-2010, 11:26 PM	#11
60ratrod yes, i do Join Date: Jun 2007 Location: Spokane, wa Posts: 2,734	Re: Moding a dual plane intake?? i know that some intakes used to come with the notch from their respective factories back a while ago, and may still do. i just haven't looked at intakes lately since i decided to go with tpi. but i thought that the runners were separate for a reason? not trying to say not to notch the plane divider, just trying to figure out where the gains might be. doesn't the divider help power down low where us truck guys tend to like it?? __________________ ERROR 404....... SNAPPY COMEBACK NOT FOUND _______________________________________________________________________________________________ -60 Chevy C10, dead 350/good th350 combo, sitting on a 76 c10 blazer frame, built from 11 different vehicles "the abomination" -07 gmt900 silverado 1500 lt xcab z71, granite blue -81 suzuki gs650g "shelah"- current project -81 kz1000m1 csr "sarge" -next project (just beautification) -07 kawasaki vulcan classic vn900

11-08-2010, 11:48 PM	#12
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	Re: Moding a dual plane intake?? The divider does help with low end power.....I wouldnt cut the intake. If you like to experiment, drop a 3/4' open spacer on it.....or get a 3/4", 4 hole spacer to experiment with. You can cut the center out & modify as needed. crazyAl __________________ http://community.webshots.com/user/hotrodhorn



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