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#1 |
Registered User
Join Date: Sep 2015
Location: Toronto
Posts: 24
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switched eddy 750 to holley 750
I switched my eddy 750 to holley 750 and found I'm getting more power and better fuel economy. Still think I need lighter vacuum spring tho. Has anyone else noticed the difference in these carburetors ? The eddy was just to sluggish. Here's what its in
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#2 |
Moderator
![]() Join Date: Dec 2012
Location: ON, Canada
Posts: 2,158
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Re: switched eddy 750 to holley 750
Big block? An Edelbrock 750 is too big for a small block. I run a 1405 600CFM Edelbrock on my my 71 350.
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#3 |
Registered User
Join Date: Sep 2015
Location: Toronto
Posts: 24
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Re: switched eddy 750 to holley 750
its on a 383 stroker, 86 k20. jasper engines class 2, I dont think its too big ...got lots more power now .
Last edited by donpr; 09-06-2015 at 07:22 PM. Reason: information |
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#4 |
Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,269
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Re: switched eddy 750 to holley 750
the only time I saw a 750 Edelbrock work on a small block was with a underhood blower. Jim
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#5 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: switched eddy 750 to holley 750
Any carb can work fantastic...or any carb can work like crap. Doesn't matter the manufacturer if you don't know how to tune it.
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#6 |
Registered User
Join Date: Sep 2015
Location: Toronto
Posts: 24
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Re: switched eddy 750 to holley 750
I tried all the different metering rods and different jets in edelbrock 1489 calibration kit with no luck. I finally had enought and put on 3310 yesterday. Im glad I did.
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#7 | |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,606
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Re: switched eddy 750 to holley 750
Quote:
Good move on the holley though. Now before you start tweaking the holley, optimize your timing first! |
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#8 |
Registered User
Join Date: Sep 2015
Location: Toronto
Posts: 24
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Re: switched eddy 750 to holley 750
It could be timing , it was 16* at idle, but I dont trust my dissy. I bought a complete other one, but ran out of time to install. This carb still pulls harder than eddy did... just my opinion
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#9 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,606
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Re: switched eddy 750 to holley 750
And it'll start better too!
Especially when it gets colder this fall. You did plug your vac advance off when you checked timing, didn't you? Have you proved your balancer/timing tab are correct? |
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#10 |
Registered User
Join Date: Sep 2015
Location: Toronto
Posts: 24
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Re: switched eddy 750 to holley 750
yes I plugged vacuum advance and no I didnt prove timing tab. That is a good point. Will check .
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#11 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,606
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Re: switched eddy 750 to holley 750
Info for you.
http://www.crankshaftcoalition.com/w...op_dead_center |
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#12 |
Registered User
Join Date: Sep 2015
Location: Toronto
Posts: 24
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Re: switched eddy 750 to holley 750
very good reading ...will read later..
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#13 |
Registered User
Join Date: Sep 2015
Location: Toronto
Posts: 24
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Re: switched eddy 750 to holley 750
heres my engine specs http://www.jasperengines.com/pdf/Cla...20Stroker%2009
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#14 |
Registered User
Join Date: Jan 2014
Location: Billings Montana
Posts: 183
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Re: switched eddy 750 to holley 750
I swapped everything over to Holley a couple years ago. The reason was how far Holley has come with their products. Power, mileage everything. Back to set it and forget it.
Don't get me wrong I'm a carb guy and have had Edelbrock, Quadrajets, old Holleys and a few oddball ones. These are all on daily driven vehicles and one weekend fun/race vehicle. ![]() |
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#15 |
Senior Member
Join Date: Sep 2004
Location: Wakaw, Sask, Canada
Posts: 3,180
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Re: switched eddy 750 to holley 750
Using the term set it and forget it and Holley in the same sentence? I guess things have changed.
__________________
"You can take the man out of PA, but you can't take PA out of the man" |
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#16 |
Registered User
![]() Join Date: May 2014
Location: PA
Posts: 1,417
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Re: switched eddy 750 to holley 750
You haven't lived until you have a 1bbl Rochester B. LOL
__________________
1967 C10, LWB, 250, Powerglide, PS, PB, 3/4 STATIC DROP |
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#17 |
Registered User
Join Date: Mar 2013
Location: Anaheim Hills, CA
Posts: 323
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Re: switched eddy 750 to holley 750
Sorry to go off topic but is 750 cfm too big for a stock 396/402?
__________________
1971 Cheyenne Big Block Longhorn |
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#18 |
Registered User
Join Date: Mar 2015
Location: Seaside,CA
Posts: 142
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Re: switched eddy 750 to holley 750
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