Edelbrock goodies, do I put them on? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

65ChevyC20 · 03-21-2008, 07:13 AM

Hey guys, I have been a member for awhile, always lurked but seldom posted. I have a truck ( see my screen name) with a 327 and the manual trans, Sm465. I was recently given an Edelbrock Performance manifold,a 650 cfm carb, cam and a set of ceramic headers for my engine. It currently has the stock 2 bbl carb on it and seems to have plenty of pick up with this setup. My question is, would I notice any performance gains by adding this to my truck. I know at freeway speeds the engine is turning higher rpms than I would like, by adding the four bbl would I just be wasting fuel??

I was planning on swapping the SM 465 for a 700R4 to gain the overdrive, should I just wait to bolt these performance goodies on after the new trans goes in??

TimC63 · 03-21-2008, 07:40 AM

Absolutely put that stuff on, especially if what you have now is stock. You'll definately notice a perfomance gain even if slight. I've always run Holleys but I recently purchased my truck that has an Edelbrock carb with electric choke and it seems to be cool. If you end up not using the set up, let me know, I'm looking for a used/new performer rpm manifold.

Longhorn321 · 03-21-2008, 07:44 AM

No! You don't want to put that stuff on! Somebody gave it to you for a reason! You will hate it! Send it over to me....I'll get rid of it for ya!

hewlett2002000 · 03-21-2008, 08:47 AM

havent we been through the "adding new top end parts to a warn bottom end" thing several times before? how many miles does this engine have on it?
John

65ChevyC20 · 03-21-2008, 09:27 AM

I rebuilt the motor approx, 7000 miles ago so that is not a problem. I was just worried that with using the SM465 trans if the 650 carb would just waste fuel. I know that with the two bbl that is on it, I can break the 33" tires loose, do I need much more low end that I would get with the 4 bbl.

Does anyone know the cfm of the two bbl. Rochester that came on it from the factory??

hewlett2002000 · 03-21-2008, 09:35 AM

well if it runs fine and you are happy with the power then i wouldent mess with it. and with gas prices the way they are it would just be a waste of fuel and more $ out of your pocket. just my opinion. good luck,
John

jonzcustomshop · 03-21-2008, 12:54 PM

I put that set up on my 350 sbc trans am.... gets about 7-10 mpg, and the power is from 2400-5000 rpm, with the auto I can't break the tires loose unless it is wet, the shift from 2nd to 3rd is a different story....

tommypic · 03-21-2008, 01:47 PM

you dont want to put them on . send me the Edelbrock Performance manifold and the 650 cfm carb

Stepside65 · 03-21-2008, 02:48 PM

as long as you don't get too crazy with it a 4 barrel carb is actually more fuel efficient. Even at the higher rpms you should lose too much milage due to the fact that the two barrel you have on now is probably not much smaller. The new intake will definitely help with that too. just my .02

62 short step · 03-21-2008, 04:00 PM

Quote:

Originally Posted by Stepside65

as long as you don't get too crazy with it a 4 barrel carb is actually more fuel efficient. Even at the higher rpms you should lose too much milage due to the fact that the two barrel you have on now is probably not much smaller. The new intake will definitely help with that too. just my .02

TimE · 03-22-2008, 05:11 AM

The gas mileage should improve with these upgrades. One reason for this is the 4 barrel carb will run off of only the front two barrels under normal acceleration/driving. The primary jets will also be smaller in the 4 barrel than the 2 barrel, therefore improving your mileage. The headers will let the motor breathe better and seeing as to how an engine is basically nothing more than an air pump, the easier it can get air in and out, the more efficient it will be. BTW, if you drive like I do, you can throw all of the mileage increases out the window (i.e. you will be driving it harder to "hear the pipes" and to "listen to the 4 barrel kick in").

kissingbug1978 · 03-23-2008, 01:49 AM

What he said. What kind of intake is it. If its an Edelbrock performer then it will great for the street.

Heater63 · 03-23-2008, 09:14 AM

YES. Install everything including the overdrive tranny and you will have better mpg and better torque/hp than you have now (with good dual exhaust)

just keep your foot out of the secondaries on the 4bbl.

03-21-2008, 07:13 AM	#1
65ChevyC20 Registered User Join Date: May 2005 Location: Kuna, ID Posts: 28	Edelbrock goodies, do I put them on? Hey guys, I have been a member for awhile, always lurked but seldom posted. I have a truck ( see my screen name) with a 327 and the manual trans, Sm465. I was recently given an Edelbrock Performance manifold,a 650 cfm carb, cam and a set of ceramic headers for my engine. It currently has the stock 2 bbl carb on it and seems to have plenty of pick up with this setup. My question is, would I notice any performance gains by adding this to my truck. I know at freeway speeds the engine is turning higher rpms than I would like, by adding the four bbl would I just be wasting fuel?? I was planning on swapping the SM 465 for a 700R4 to gain the overdrive, should I just wait to bolt these performance goodies on after the new trans goes in??

03-21-2008, 07:40 AM	#2
TimC63 Registered User Join Date: Mar 2008 Location: San Jose, CA Posts: 40	Re: Edelbrock goodies, do I put them on? Absolutely put that stuff on, especially if what you have now is stock. You'll definately notice a perfomance gain even if slight. I've always run Holleys but I recently purchased my truck that has an Edelbrock carb with electric choke and it seems to be cool. If you end up not using the set up, let me know, I'm looking for a used/new performer rpm manifold.

03-21-2008, 07:44 AM	#3
Longhorn321 Size Matters Join Date: Aug 2007 Location: Lyman, SC Posts: 9,189	Re: Edelbrock goodies, do I put them on? No! You don't want to put that stuff on! Somebody *gave* it to you for a reason! You will hate it! Send it over to me....I'll get rid of it for ya! __________________ "Reading the owners manual is only for quitters." Jason Harper, Bloomberg News. ...WOOOO HOOOO!!!! Last edited by Longhorn321; 03-21-2008 at 07:45 AM.

03-21-2008, 08:47 AM	#4
hewlett2002000 Registered User Join Date: Dec 2006 Location: Cleveland, Tx Posts: 1,619	Re: Edelbrock goodies, do I put them on? havent we been through the "adding new top end parts to a warn bottom end" thing several times before? how many miles does this engine have on it? John __________________ Respect: 1. A feeling of appreciative, often deferential regard; esteem. 2. The state of being regarded with honor or esteem. 3. Willingness to show consideration or appreciation. When you fail to show consideration to others values you are showing disrespect.

03-21-2008, 09:27 AM	#5
65ChevyC20 Registered User Join Date: May 2005 Location: Kuna, ID Posts: 28	Re: Edelbrock goodies, do I put them on? I rebuilt the motor approx, 7000 miles ago so that is not a problem. I was just worried that with using the SM465 trans if the 650 carb would just waste fuel. I know that with the two bbl that is on it, I can break the 33" tires loose, do I need much more low end that I would get with the 4 bbl. Does anyone know the cfm of the two bbl. Rochester that came on it from the factory?? __________________ "I feel like just another spoke in a great big wheel, like a tiny blade of grass in a great big field"

03-21-2008, 09:35 AM	#6
hewlett2002000 Registered User Join Date: Dec 2006 Location: Cleveland, Tx Posts: 1,619	Re: Edelbrock goodies, do I put them on? well if it runs fine and you are happy with the power then i wouldent mess with it. and with gas prices the way they are it would just be a waste of fuel and more $ out of your pocket. just my opinion. good luck, John __________________ Respect: 1. A feeling of appreciative, often deferential regard; esteem. 2. The state of being regarded with honor or esteem. 3. Willingness to show consideration or appreciation. When you fail to show consideration to others values you are showing disrespect.

03-21-2008, 12:54 PM	#7
jonzcustomshop 1961 crewcab Join Date: Dec 2007 Location: missoula, mt Posts: 6,164	Re: Edelbrock goodies, do I put them on? I put that set up on my 350 sbc trans am.... gets about 7-10 mpg, and the power is from 2400-5000 rpm, with the auto I can't break the tires loose unless it is wet, the shift from 2nd to 3rd is a different story....

03-21-2008, 01:47 PM	#8
tommypic Registered User Join Date: Jan 2008 Location: Piedmont , SC Posts: 728	Re: Edelbrock goodies, do I put them on? you dont want to put them on . send me the Edelbrock Performance manifold and the 650 cfm carb

03-21-2008, 02:48 PM	#9
Stepside65 Still Truckless! Join Date: Jul 2007 Location: Valrico, Florida Posts: 3,166	Re: Edelbrock goodies, do I put them on? as long as you don't get too crazy with it a 4 barrel carb is actually more fuel efficient. Even at the higher rpms you should lose too much milage due to the fact that the two barrel you have on now is probably not much smaller. The new intake will definitely help with that too. just my .02 __________________ ~James Truckless 2009 Hyundai Sonata<~~Wife's sedanomatic 1997 Nissan Pickup Father-in-law's tonka toy I am forced to drive Founder of The 60-66 Club Tutor Et Ultor

03-22-2008, 05:11 AM	#11
TimE Hey Y'all!! Join Date: Dec 2007 Location: Bay Minette, Alabama Posts: 1,755	Re: Edelbrock goodies, do I put them on? The gas mileage should improve with these upgrades. One reason for this is the 4 barrel carb will run off of only the front two barrels under normal acceleration/driving. The primary jets will also be smaller in the 4 barrel than the 2 barrel, therefore improving your mileage. The headers will let the motor breathe better and seeing as to how an engine is basically nothing more than an air pump, the easier it can get air in and out, the more efficient it will be. BTW, if you drive like I do, you can throw all of the mileage increases out the window (i.e. you will be driving it harder to "hear the pipes" and to "listen to the 4 barrel kick in").

03-23-2008, 01:49 AM	#12
kissingbug1978 Registered User Join Date: Feb 2008 Location: San Antonio,Tx Posts: 83	Re: Edelbrock goodies, do I put them on? What he said. What kind of intake is it. If its an Edelbrock performer then it will great for the street.

03-23-2008, 09:14 AM	#13
Heater63 Registered User Join Date: Dec 2007 Location: N Texas Posts: 580	Re: Edelbrock goodies, do I put them on? YES. Install everything including the overdrive tranny and you will have better mpg and better torque/hp than you have now (with good dual exhaust) just keep your foot out of the secondaries on the 4bbl. __________________ 292 + TKO500



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