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  Perf RPM vs. Air Gap RPM

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Author Topic:   Perf RPM vs. Air Gap RPM
H8CHEVY
Gearhead

Posts: 276
From: Southern Cali
Registered: Jun 2000

posted 01-16-2002 05:03 PM     Click Here to See the Profile for H8CHEVY   Click Here to Email H8CHEVY     Edit/Delete Message   Reply w/Quote
So I was wondering what everyone can tell me about these two intakes.. Is the air gap really worth its money? or is it just another way to make more money?? Also will the air gap fit under the stock mustang hood?? thanks..

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sigtauenus
Gearhead

Posts: 1824
From: Beaufort, SC
Registered: Jun 2000

posted 01-16-2002 05:30 PM     Click Here to See the Profile for sigtauenus   Click Here to Email sigtauenus     Edit/Delete Message   Reply w/Quote
I think I've seen this question at least 2-3 times already.

Alex, Steve, do we have it in the archives yet?

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Fastymz
Moderator

Posts: 12015
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 01-16-2002 05:31 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
I like the RPM,intake I think it's a nice blend of lower and upper end intake.I have read the air gap flows alittle better and any time you cool off the air fuel means more power.Fit under the hood not sure what years car and motor set up.I know the airgap is alittle more tall then the RPM.If it fits go with the air gap I think it's like $30+ more then the RPM.Remember for every 10degrees cooler the fuel mix is it adds 1hp.Hey if it dose not fit it's SCOOP time. Bigger is better....

Just my .02

SCOOP

------------------
65 coupe,351w,RPM intake,Carter625,shorty headers,2.5 exhaust, Flowmasters,C4,open 8" 2:80,Big Boss 429 hood scoop,Crager SS,Black Suede.
MEM#1240

https://mustangsandmore.com/ubb/Fastymz.html

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H8CHEVY
Gearhead

Posts: 276
From: Southern Cali
Registered: Jun 2000

posted 01-16-2002 09:42 PM     Click Here to See the Profile for H8CHEVY   Click Here to Email H8CHEVY     Edit/Delete Message   Reply w/Quote
Ok I found out that the have the same deck height.. but my question still is, is there a big difference in the runners on the intake? I understand that they are more open for cooling.. but just wondering if its worth the $80 more.. thanks..

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SundanceKid
Gearhead

Posts: 1033
From: UT
Registered: Feb 2001

posted 01-17-2002 12:23 AM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
OK, I have heard from my cousin 3rd removed by marrage's uncles best friends roomates parolees lawyers pool guys nail girl, that the RPM AIR GAP flows more then the regular RPM.
Edelbrock doesn't support this claim though? At least I haven't found it yet? The Deck heights are exactly the same. Edelbrock lists that in their catalog. They don't list it as having larger runners though? It does have the divider in the plenum notched wich would make the AIR GAP rpm band higher.

Does anyone have a tech, faq, link, site, anything, that shows the Horse power/torque curves of the two intakes?

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Fastymz
Moderator

Posts: 12015
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 01-17-2002 03:09 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
I'll look it up at home but I have a car rag I.E.carcraft.That ran the rpm air gap and siad it was alittle taller over all.Then the old Rpm they had.They also said it flows alittle better.And the cooling should be worth some power.

SundanceKid,this kills me. "OK, I have heard from my cousin 3rd removed by marrage's uncles best friends roomates parolees lawyers pool guys nail girl, that the RPM AIR GAP flows more then the regular RPM."

SCOOP

------------------
65 coupe,351w,RPM intake,Carter625,shorty headers,2.5 exhaust, Flowmasters,C4,open 8" 2:80,Big Boss 429 hood scoop,Crager SS,Black Suede.
MEM#1240

https://mustangsandmore.com/ubb/Fastymz.html

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Fastymz
Moderator

Posts: 12015
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 01-17-2002 03:28 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Ok I went to the Edelbrock site and yes the RPM air gap is more tall then the RPM,but thats only for 351w. The 289-302 are the same size.I have only read about the 351w intake.The 351w rpm is A.4.30-B.5.31 and the air gap is.B.5.30-6.19.Hope this helps. Heres the site.
http://edelbrock.com/automotive/index.html


SCOOP.

------------------
65 coupe,351w,RPM intake,Carter625,shorty headers,2.5 exhaust, Flowmasters,C4,open 8" 2:80,Big Boss 429 hood scoop,Crager SS,Black Suede.
MEM#1240

https://mustangsandmore.com/ubb/Fastymz.html

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SundanceKid
Gearhead

Posts: 1033
From: UT
Registered: Feb 2001

posted 01-17-2002 09:46 PM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
Thanks, Yeah the 289/302 is 4.30 dim. A on both the RPM and the AirGap. I just wonder other then looking sweet and the cool air hype if there is realy any gain?

I would think without the engine warming the intake that would be a bad thing for a street driven car? It would just take longer to get warm (metal to metal heat transfer).

I just feel Edelbrock is paying a pretty sum to have the media shove it down our throats?

I hope they sell a million so a maket can be established and we (Ford SB) can have fifty intakes to chose from like the Chevy boys.

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Fastymz
Moderator

Posts: 12015
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 01-18-2002 01:41 AM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
I do know the more they sale.The prices seen to keep coming down, and selection gose up.I find that interesting that the Air gap for the 351w is taller then the rpm.But not on the 289-302.

SCOOP

------------------
65 coupe,351w,RPM intake,Carter625,shorty headers,2.5 exhaust, Flowmasters,C4,open 8" 2:80,Big Boss 429 hood scoop,Crager SS,Black Suede.
MEM#1240

https://mustangsandmore.com/ubb/Fastymz.html

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Fastymz
Moderator

Posts: 12015
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 01-18-2002 12:29 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
This is from the tech dept,at Edelbrock.

Subj: RE: RPM intake
Date: 1/18/02 8:51:43 AM Pacific Standard Time
From: [email protected] (Van Mattiza)
To: [email protected] ('[email protected]')

"Yes the height is different.
But on the engine dyno the RPM air gap only made 4 HP more than the standard RPM manifold
The big difference will be when the under hood temps get hot."


SCOOP.

------------------
65 coupe,351w,RPM intake,Carter625,shorty headers,2.5 exhaust, Flowmasters,C4,open 8" 2:80,Big Boss 429 hood scoop,Crager SS,Black Suede.
MEM#1240

https://mustangsandmore.com/ubb/Fastymz.html

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SundanceKid
Gearhead

Posts: 1033
From: UT
Registered: Feb 2001

posted 01-18-2002 01:08 PM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
Thanks for the info, guess we all wanted to beat around the bush! LOL
Fastymz, is the Goto guy! Thanks again.

Well, when they do come down in price....I might consider one? I still think the "lool" better, and anything that looks cool has got to make your car faster right?

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Fastymz
Moderator

Posts: 12015
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 01-18-2002 01:14 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by SundanceKid:

and anything that looks cool has got to make your car faster right?

I stand by that 100%...I know for sure that when I put the Cragers SS on my 65,it was faster.

SCOOP.

------------------
65 coupe,351w,RPM intake,Carter625,shorty headers,2.5 exhaust, Flowmasters,C4,open 8" 2:80,Big Boss 429 hood scoop,Crager SS,Black Suede.
MEM#1240

https://mustangsandmore.com/ubb/Fastymz.html

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H8CHEVY
Gearhead

Posts: 276
From: Southern Cali
Registered: Jun 2000

posted 01-18-2002 03:10 PM     Click Here to See the Profile for H8CHEVY   Click Here to Email H8CHEVY     Edit/Delete Message   Reply w/Quote
has anyone tried to fit the RPM air gap on a 302 under a stock hood on a 66?? just wondering how much room to spare, if any , I will have?? thanks alot again..

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Ken
Gearhead

Posts: 3981
From: Prospect, Ct. M&M Member No. 31 MCA Member 49299
Registered: Jun 99

posted 01-18-2002 07:58 PM     Click Here to See the Profile for Ken   Click Here to Email Ken     Edit/Delete Message   Reply w/Quote
I've got the RPM Air-Gap under the hood of my 302ci powered 65 and it fits just fine . Check the link below to "My Photo Page", theres a picture of the motor there. I'm not sure how much room to spare there is because I've never been able to get my head in there with the hood closed !!!

------------------
Conciousness - that annoying time between naps.

Ken
1965 Springtime Yellow Coupe
302GT40-4spd
Edlebrock RPM Air Gap
670cfm Holley Street Avenger
and much, much MORE !!!
My-Photo-Page

[This message has been edited by Ken (edited 01-18-2002).]

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