Edlebrock EFI - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BigRed Beast · 06-08-2013, 09:42 AM

Pricey at around $2200, I was wondering if anyone had installed the E Street throttle body system from Edelbrock:

http://www.summitracing.com/parts/ed...FcY7MgodviQA1A

Wondering if any fuel savings are negated by the stock transmission ratios--can you really save enough to ever make it worthwhile?

The math I did: stock 10 mpg with fuel at $3.50 a gallon vs. 18 mpg (pulled from air). Filling a 23 gallon tank would result in a savings of $3.68 a tank; it would take 600 tanks to pay for itself. Obviously, a higher fuel cost would change the payback.

Thoughts?

Bigdav160 · 06-08-2013, 11:09 AM

My opinion is there is no difference in fuel economy between EFI and a properly tuned carb.

The benefit of EFI is better cold start drivability and automatic altitude compensation.

This is different than new vehicle direct fuel injection which pulls the heat out of the combustion chamber due to fuel vaporization. Higher chamber pressures can be run increasing efficiency.

Fuel economy and engine longevity have increased due to, mostly, gear ratios. Think overdrive transmissions and proper axle gearing.

**jaros44sr** · 06-08-2013, 07:28 PM

If you are going for fuel economy, jmho but, money would be better spent on an od trans. Now, if your looking for the cool factor, and tuneability,......

BigRed Beast · 06-09-2013, 11:55 AM

Yeah, I kinda figured as much--too good to be true, especially with the transmission issue of the TH350. Is the 700R still the best replacement?

**jaros44sr** · 06-09-2013, 02:00 PM

I was looking into the 700, but i think the 4l 60, or 80 is abetter choice. I forget my reasoning. The nice thing about the trans swap is that you just have to move the engine forward a couple inches, and all the rest of the powertrain stays where it is

Plus you get more clearance at the firewall around the distr.

AlaskaMatt · 06-12-2013, 01:25 PM

Quote:

Originally Posted by jaros44sr

I was looking into the 700, but i think the 4l 60, or 80 is abetter choice. I forget my reasoning. The nice thing about the trans swap is that you just have to move the engine forward a couple inches, and all the rest of the powertrain stays where it is

Plus you get more clearance at the firewall around the distr.

I went with the 700 but 100% agree about moving things forward.
Posted via Mobile Device

AlaskaMatt · 06-12-2013, 01:22 PM

I get the point of the OP but his math is way off. 10mpg to 18mpg is an 80% increase in economy.

Keeping the numbers easy to work with let's say a 20 gal tank got you 200 miles for roughly $80 before (10mpg/ $4 gas is expensive here and it's a round number)

Same $80 will get still you 20 gallons but now you will go 380 miles. Basically you cut your gas bill nearly in half. (18mpg same $4)

All that said, even saving ~$35 a tank still is a lot of tanks to pay for the EFI. And no I don't think anyone will see 18 mpg with EFI.
Posted via Mobile Device

chuckmc8 · 06-13-2013, 04:26 PM

[QUOTE=BigRed Beast;6113441]Pricey at around $2200, I was wondering if anyone had installed the E Street throttle body system from Edelbrock:

For less than $2200 I installed a low mileage 5.3 with 4l60 that included modified computer and wiring harness. That also included alternator, PS,A/C compressor, and fuel system. No way that I would consider putting $2200 into an aftermarket fuel injection system unless I had a matching number engine value combo etc.....then I would still swap to the LS

BigRed Beast · 06-15-2013, 09:56 AM

Chuckmc8: did you do the 5.3 and 4l60 install yourself into a blazer?

chuckmc8 · 06-16-2013, 03:21 PM

Quote:

Originally Posted by BigRed Beast

Chuckmc8: did you do the 5.3 and 4l60 install yourself into a blazer?

Yes I did, It was not difficult. I fabbed the mounts so that I could leave the a/c compressor in the stock location and the mechanical fan work in the factory shroud.
I cant seem to upload the pic, Ill try again later to get some pics posted

72blazerblue · 06-19-2013, 12:58 PM

Quote:

Originally Posted by chuckmc8

Yes I did, It was not difficult. I fabbed the mounts so that I could leave the a/c compressor in the stock location and the mechanical fan work in the factory shroud.
I cant seem to upload the pic, Ill try again later to get some pics posted

could you explain how you did the wiring, throttle cable, and fuel pump?

06-08-2013, 09:42 AM	#1
BigRed Beast Registered User Join Date: Aug 2007 Location: Parker, CO Posts: 140	Edlebrock EFI Pricey at around $2200, I was wondering if anyone had installed the E Street throttle body system from Edelbrock: http://www.summitracing.com/parts/ed...FcY7MgodviQA1A Wondering if any fuel savings are negated by the stock transmission ratios--can you really save enough to ever make it worthwhile? The math I did: stock 10 mpg with fuel at $3.50 a gallon vs. 18 mpg (pulled from air). Filling a 23 gallon tank would result in a savings of $3.68 a tank; it would take 600 tanks to pay for itself. Obviously, a higher fuel cost would change the payback. Thoughts? __________________ Big Red Beast 1972 Blazer CST AC/Auto/4x4 "Project" 1997 F 350 CC Powerstroke "The Great White"

06-08-2013, 11:09 AM	#2
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: Edlebrock EFI My opinion is there is no difference in fuel economy between EFI and a properly tuned carb. The benefit of EFI is better cold start drivability and automatic altitude compensation. This is different than new vehicle direct fuel injection which pulls the heat out of the combustion chamber due to fuel vaporization. Higher chamber pressures can be run increasing efficiency. Fuel economy and engine longevity have increased due to, mostly, gear ratios. Think overdrive transmissions and proper axle gearing. __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

06-08-2013, 07:28 PM	#3
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,844	Re: Edlebrock EFI If you are going for fuel economy, jmho but, money would be better spent on an od trans. Now, if your looking for the cool factor, and tuneability,...... __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

06-09-2013, 11:55 AM	#4
BigRed Beast Registered User Join Date: Aug 2007 Location: Parker, CO Posts: 140	Re: Edlebrock EFI Yeah, I kinda figured as much--too good to be true, especially with the transmission issue of the TH350. Is the 700R still the best replacement? __________________ Big Red Beast 1972 Blazer CST AC/Auto/4x4 "Project" 1997 F 350 CC Powerstroke "The Great White"

06-09-2013, 02:00 PM	#5
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,844	Re: Edlebrock EFI I was looking into the 700, but i think the 4l 60, or 80 is abetter choice. I forget my reasoning. The nice thing about the trans swap is that you just have to move the engine forward a couple inches, and all the rest of the powertrain stays where it is Plus you get more clearance at the firewall around the distr. __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

06-12-2013, 01:22 PM	#7
AlaskaMatt Registered User Join Date: Apr 2010 Location: AK Posts: 198	Re: Edlebrock EFI I get the point of the OP but his math is way off. 10mpg to 18mpg is an 80% increase in economy. Keeping the numbers easy to work with let's say a 20 gal tank got you 200 miles for roughly $80 before (10mpg/ $4 gas is expensive here and it's a round number) Same $80 will get still you 20 gallons but now you will go 380 miles. Basically you cut your gas bill nearly in half. (18mpg same $4) All that said, even saving ~$35 a tank still is a lot of tanks to pay for the EFI. And no I don't think anyone will see 18 mpg with EFI. Posted via Mobile Device __________________ Thanks, Matt My Website

06-13-2013, 04:26 PM	#8
chuckmc8 It's alsways something..... Join Date: Nov 2008 Location: Douglasville GA Posts: 1,171	Re: Edlebrock EFI [QUOTE=BigRed Beast;6113441]Pricey at around $2200, I was wondering if anyone had installed the E Street throttle body system from Edelbrock: For less than $2200 I installed a low mileage 5.3 with 4l60 that included modified computer and wiring harness. That also included alternator, PS,A/C compressor, and fuel system. No way that I would consider putting $2200 into an aftermarket fuel injection system unless I had a matching number engine value combo etc.....then I would still swap to the LS __________________ 1968 RS Camaro 'Vert Matching number 327 and M21 Muncie 1968 C10 Black with red interior and orig paint. 5.3 / 4l60e,3:73 POSI 17" Torq Thrusts 1968 CST 514 Red with black interior. Buddy Buckets, Factory A/C, PS, PB- 20" AR custom shop TT, 5.3 and 4l60e

06-15-2013, 09:56 AM	#9
BigRed Beast Registered User Join Date: Aug 2007 Location: Parker, CO Posts: 140	Re: Edlebrock EFI Chuckmc8: did you do the 5.3 and 4l60 install yourself into a blazer? __________________ Big Red Beast 1972 Blazer CST AC/Auto/4x4 "Project" 1997 F 350 CC Powerstroke "The Great White"



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