Dual plane intakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dubie · 11-28-2002, 04:53 PM

I was researching a Comp cam, and the one i have chosen says it works best if you have a dual plane intake. What exactly is the difference between a dual plane and a stock 4 barrel carb intake? Or are they the same and my rookie engine building skills are showing.

67 C-10 LWB · 11-28-2002, 05:08 PM

as far as I know a dual plane intake has like 2 levels to it, when you look down the plenum it should be divided in 2, one side will not go down as deep as the other, thus it has like 2 "levels" or "dual plane" I am pretty sure that is what it is, or maybe I am just a rookie that has no clue LOL

hope that helps

Ean

Longhorn Man · 11-28-2002, 06:21 PM

Ean, you are right, and so is Dubie.
A stock intake is in fact a daul plain deal, but a new aftermarket one will make a noticiable increase in torque.

67cst · 11-28-2002, 08:15 PM

cool, always wondered that too, learn something everyday eh

stllookn · 11-28-2002, 09:13 PM

Daul plane intakes are designed to maximize intake runner (tube) length for better bottom end torque. Single plane intakes have shorter runners to maximize top end horsepower...least that is what the 'ole engine design manuals say.

Longhorn Man · 11-28-2002, 09:23 PM

This is also true.
In the real world of stop and go, there is no reason to have a single plane intake. The performer is a great stock replacement (and boosts power at all levels) and the Performer RPM is a great one for an engine that is a little more on the upper end, while still making good numbers down low.
i have run both these intakes on both types of engines and highly recomend both. Just remember to match the intake description to the cam descriptions.

11-28-2002, 04:53 PM	#1
dubie Registered User Join Date: May 2000 Location: Flin Flon, Manitoba, Canada Posts: 8,855	Dual plane intakes I was researching a Comp cam, and the one i have chosen says it works best if you have a dual plane intake. What exactly is the difference between a dual plane and a stock 4 barrel carb intake? Or are they the same and my rookie engine building skills are showing. __________________ My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795

11-28-2002, 05:08 PM	#2
67 C-10 LWB Registered User Join Date: Nov 2000 Location: Bay City, MI, USA Posts: 452	as far as I know a dual plane intake has like 2 levels to it, when you look down the plenum it should be divided in 2, one side will not go down as deep as the other, thus it has like 2 "levels" or "dual plane" I am pretty sure that is what it is, or maybe I am just a rookie that has no clue LOL hope that helps Ean __________________ 1999 Silverado Ext Cab Short Box Z71 2006 Trailblazer (wifes) 2 '04 KFX400's My Site

11-28-2002, 08:15 PM	#4
67cst i love summertime Join Date: Jul 2002 Location: Kelowna BC Posts: 4,303	cool, always wondered that too, learn something everyday eh __________________ 1967 shortbox stepside Chevy, 365 hp 327, th400. GLOVE BOX LIGHTS FORSALE, click link for info http://67-72chevytrucks.com/vboard/s...d.php?t=273724

11-28-2002, 09:13 PM	#5
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Daul plane intakes are designed to maximize intake runner (tube) length for better bottom end torque. Single plane intakes have shorter runners to maximize top end horsepower...least that is what the 'ole engine design manuals say. __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

11-28-2002, 06:21 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Ean, you are right, and so is Dubie. A stock intake is in fact a daul plain deal, but a new aftermarket one will make a noticiable increase in torque.

11-28-2002, 09:23 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	This is also true. In the real world of stop and go, there is no reason to have a single plane intake. The performer is a great stock replacement (and boosts power at all levels) and the Performer RPM is a great one for an engine that is a little more on the upper end, while still making good numbers down low. i have run both these intakes on both types of engines and highly recomend both. Just remember to match the intake description to the cam descriptions.



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