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#1 |
1 Wrench / 10 Knuckles
Join Date: Sep 2002
Location: Burlington Ontario
Posts: 179
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Vortec Intake /spreadbore Or?
I DON'T WANT TO BEAT THE VORTEC QUESTIONS TO DEATH BUT...
I HAVE DECIDED TO GO WITH VORTEC HEADS, HIGH ENERGY 268 COMP CAM AND AN EDELBROCK RPM VORTEC INTAKE. I WILL BE KEEPING THE QJET (FOR AWHILE ANYWAY) SO HAVE OPTED FOR THE SPLITBORE. IS THIS THE BEST INTAKE FOR THIS APPLICATION? GOALS: BOTTOM END TORQUE WITH THE 3:07 GEAR DECENT PERFORMANCE WITH RELIABILITY. GAS MILEAGE...WHO CARES ![]() WILL I BE HAPPY WITH THIS COMBO OOPS....SORRY ABOUT THE CAPS...I'M NOT YELLING
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1970 GMC Custom Vortec Heads, Edelbrock Performer Intake, Crane 272 Energizer, Hedman Full Length HTC Headers 2006 Dodge Charger SRT8. 1/4 mile 13.3 1973 Z1 900 Kawasaki ( all original) Last edited by buckola; 05-19-2004 at 02:49 PM. |
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#2 |
drag body or die
Join Date: May 2004
Location: Redneck country
Posts: 79
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Dont know about best, but for bottom end, the RPM is 1500-6500 i believe, try maybe the Performer Air Gap, idle to 5500.. with a 3.07 you're not gonna see the 3500 or so i believe range the RPM peaks, very much. imo. but i'm not an expert.
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-Bobby- |
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#3 |
Gotta Startem Early
Join Date: Oct 2001
Location: Amarillo, TX, USA
Posts: 364
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Kut is right, for torque the Performer Air Gap is better, shorter runners, but if I am not mistaken they do not make a Performer in an air gap version for Vortec heads. You will have to use the RPM Performer Air Gap for Vortec heads (#7516 - $225) or you can use the standard Performer, withouth air gap, for Vortec heads (#2116 - $165). They are both very good intakes.
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67 SWB In Progress, one piece at a time, maybe 3 years I will be finished |
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#4 |
1 Wrench / 10 Knuckles
Join Date: Sep 2002
Location: Burlington Ontario
Posts: 179
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thanks,
For the extra $ do you think the air gap is worth it. I don't want to cheap out at this stage of the game
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1970 GMC Custom Vortec Heads, Edelbrock Performer Intake, Crane 272 Energizer, Hedman Full Length HTC Headers 2006 Dodge Charger SRT8. 1/4 mile 13.3 1973 Z1 900 Kawasaki ( all original) |
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#5 |
Gotta Startem Early
Join Date: Oct 2001
Location: Amarillo, TX, USA
Posts: 364
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The RPM Air Gap is a very good intake but like mentioned is more tuned for 1500-6500 RPM. Not sure what your engines torque curve looks like. The performer will make good power for you, especially at the low end, over a stock intake. I admit it would be better if the intake did have an air gap. Call Edelbrock, they may be coming out with a Performer Air Gap for Vortecs soon and you may want to wait.
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67 SWB In Progress, one piece at a time, maybe 3 years I will be finished |
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#6 |
Registered User
Join Date: Mar 2001
Location: Moore, Ok
Posts: 1,149
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First, are you building a 350 with auto tranny and stock converter? If this is true then the performer may be a better choice than the RPM intake. If you live and drive in a cold climate I would personally stay away from the AirGap,but if you live down south where its warm then the AirGap design is probably worth the extra cost. Your performance is going to suffer somewhat with the 3.07 gearing, stock converter and the trucks weight. What compression ratio and type of exhaust are you planning to use? Keeping the compression up around 9.5-10.1 will help out the bottom end as will smaller diameter and longer primary header tubes. If you get it all together and your not happy with the off the line performance then you can always make a converter or gearing swap in the future. Good luck........Stroker
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72 SWB parts and pieces Oklahoma |
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#7 |
Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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They don't make a spread-bore RPM intake for Vortec heads. I emailed them about 3 months ago & they said they have no plans to do so. Maybe if a bunch of people asked, they might reconsider.
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#8 |
Registered User
![]() Join Date: Feb 2001
Location: East Central, MO
Posts: 11,336
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I have a RPM Airgap for vortec heads I may be willing to part with. PM me if interested.
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#9 |
1 Wrench / 10 Knuckles
Join Date: Sep 2002
Location: Burlington Ontario
Posts: 179
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do you think the hedman headers part #69096 unequal length 1-5/8 with 3" collectors would do the trick? theres a set on ebay and the guy lives close by
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1970 GMC Custom Vortec Heads, Edelbrock Performer Intake, Crane 272 Energizer, Hedman Full Length HTC Headers 2006 Dodge Charger SRT8. 1/4 mile 13.3 1973 Z1 900 Kawasaki ( all original) |
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#10 | |
Registered User
Join Date: Jan 2004
Location: NH
Posts: 2,266
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Quote:
As far as I my o2 worth is that headers for the street are pretty much about equal, hedman, Dynomax, Hooker & Others all make descent headers, the only thing I would recomend is make sure they are coated, they look a lot nicer and last a lot longer than the steel that rustup in no time and also add more heat in the engine compartment.
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1967 C10 - SWBSS Pro Street 427sbc, 700R4 & 4.10 Gears 1948 Chevy FleetMaster Coupe, LS1, (almost done) 1950 Chevy StyleLine Coupe 250/6 3x2 Dueces 2009 Toyota Tundra 1996 Harley RoadKing "I maybe getting old, but I can still burn rubber with the best of them" |
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