what are the problems with an Eddy 750 AFB???
#301134
04/27/09 03:33 PM
04/27/09 03:33 PM
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Indiana
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I’ve seen several references to ‘issues’ with the new-style 750 Edelbrock AFBs. I have one on my car and it’s giving me fits regarding AF ratio – both my butt and my wideband agree. It’s rich on the bottom and way lean on the top. No combination of rods/jets/springs seems to cure it.
Anyway – what are the problems that folks refer to?
Parts I seek:
driver doorpanel, 65 Sport Fury, prefer black, needs to be 7-8 on 10 scale, might buy set
16" x 6" Dodge truck wheel(s), from early 70s?, takes 9" dogdish - need for a research job so cheaper is better.
69-73 C-body caliper brackets and/or splashields
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Re: what are the problems with an Eddy 750 AFB???
[Re: Fury Fan]
#301135
04/27/09 04:11 PM
04/27/09 04:11 PM
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Anonymous
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Anonymous
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Those carbs HATE too much fuel pressure--no more than 5 to 51/2 lbs and it will usually clear right up Start with 5 and then try it. A Holley can stand upwards of 7 no prob but those Eddys can't do it!
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Re: what are the problems with an Eddy 750 AFB???
[Re: ]
#301136
04/27/09 04:44 PM
04/27/09 04:44 PM
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Florida
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Re: what are the problems with an Eddy 750 AFB???
[Re: Mr.Yuck]
#301143
04/28/09 07:39 AM
04/28/09 07:39 AM
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Indiana
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I've got a rod/jet kit, even made an Excel spreadsheet of all the combinations to see how mcuh % I was changing between all the available rods/jets.
The thing that is aggravating is that I've had great luck with the 650-size AFBs on similar engines (small-cam 350hp version in a C-body). I added shorty headers to this one and no amount of carb tuning seems to be able to correct my fuel curve.
I'm going to try a 625 I have and see what happens...
Parts I seek:
driver doorpanel, 65 Sport Fury, prefer black, needs to be 7-8 on 10 scale, might buy set
16" x 6" Dodge truck wheel(s), from early 70s?, takes 9" dogdish - need for a research job so cheaper is better.
69-73 C-body caliper brackets and/or splashields
Send a PM.
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Re: what are the problems with an Eddy 750 AFB???
[Re: Fury Fan]
#301144
04/28/09 08:20 AM
04/28/09 08:20 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
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I could never tune the WOT bog out of my 750 eddie on my mild 360. switched to a #1406 eddie 600 and was much happier.
if you're pig rich at idle but lean everywhere else, you might want to try drilling an 1/8" hole in each primary throttle blade. and go from there. to fine tune my 600 I had to do that as well.
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Re: what are the problems with an Eddy 750 AFB???
[Re: patrick]
#301145
04/28/09 08:25 AM
04/28/09 08:25 AM
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A Banana Republic near you.
JohnRR
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Quote:
I could never tune the WOT bog out of my 750 eddie on my mild 360. switched to a #1406 eddie 600 and was much happier.
And I now have that POS carb ... lucky me ... 
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Re: what are the problems with an Eddy 750 AFB???
[Re: RapidRobert]
#301146
04/28/09 08:27 AM
04/28/09 08:27 AM
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NY usa
540challenger
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Quote:
Quote:
I’ve seen several references to ‘issues’ with the new-style 750 Edelbrock AFBs.
Anyway – what are the problems that folks refer to?
passages not drilled completely & shavings left in the casting. I've never owned one personally & even heard(on here) of a few owners happy with them but for me I wont take a chance(too many other choices available).
 I took one apart a few months ago for a buddy when i opened it up both front jet passages seemed to be clogged. I blow air into them and a piece of metal shot out. then i tried the other side but i couldn't get the passage cleared returned it to eddy.
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Re: what are the problems with an Eddy 750 AFB???
[Re: patrick]
#301147
04/28/09 09:12 AM
04/28/09 09:12 AM
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Joined: Dec 2006
Posts: 3,533
Indiana
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Quote:
if you're pig rich at idle but lean everywhere else, you might want to try drilling an 1/8" hole in each primary throttle blade. and go from there. to fine tune my 600 I had to do that as well.
Tried that already, helped a little but not as much as I anticipated... 
Parts I seek:
driver doorpanel, 65 Sport Fury, prefer black, needs to be 7-8 on 10 scale, might buy set
16" x 6" Dodge truck wheel(s), from early 70s?, takes 9" dogdish - need for a research job so cheaper is better.
69-73 C-body caliper brackets and/or splashields
Send a PM.
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