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#1 |
Junior Member
Join Date: Jul 2015
Location: Fairbanks Alaska
Posts: 18
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Hello to any one reading this post I'm looking for some info on what other people have tried and what seems to be the best setting, I have a new Eddelbrock 1404 4 barrel carb on an offenhouser intake for my 8 ba that's going in my 51 f1 the carb I've been informed needs to have metering rods and maybe even jets changed I have the kit with all the goodies but I'm not sure on the chart where I really should be,leaner is what I've been informed is better because stock is to rich the number 11 setting on the chart says 2 stages leaner I'm no hoodoo so any info would be greatly appreciated I'm using a Bubas dist with only mechanical advance and the motor is pretty much stock, thanks I welcome any advice. Alec
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#2 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,925
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Don't forget the stock dist can't be used with this carb. You might try #8 jet set, but an AF meter is the key to success. And the Vac. adv is the key to economy. Be interested on what you find becaust I'm not sure how this system works on a stock engine.
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#3 |
Senior Member
Join Date: May 2010
Location: East Hartford, Ct
Posts: 5,898
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I have the same setup on a stock '51 Merc.
The Bubba's distributor should work but one with vac. advance would be a little better. For your reference I am using setup #7 (metering rod only with stock jet) which with AF meter works well. (yours may or may not be the same) Did try #11 (small jet with original rod) and it was too lean. The #8 metering rod is not included with the rod and jet kit.
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DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES Last edited by 51 MERC-CT; 06-02-2016 at 05:56 AM. |
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#4 |
Senior Member
Join Date: Nov 2015
Location: North Pole, Alaska
Posts: 2,667
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Did you get your jet kit yet Alec? I'll be glad to come over and give you a hand with it. Are you putting your truck in the car show this weekend?
I'm still needing T stats for mine, don't think I'll be at the show. |
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#5 |
Senior Member
Join Date: May 2010
Location: Enfield Connecticut
Posts: 559
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I used the .083 jets and the metering rods that came with the carb. I have a mild cam, but otherwise set up is pretty much the same as yours (bubba's distributor). I'm using an Edelbrock intake. Seems to be working well for me.
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#6 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,925
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#7 |
Senior Member
Join Date: May 2010
Location: East Hartford, Ct
Posts: 5,898
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Ol'Ron, for your information the #8 setting (which is rod only) is identical to the #7 setting except that it allows a richer mixture at low vacuum (foot in it, power on)
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DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES |
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#8 |
Senior Member
Join Date: Dec 2011
Location: NW North Carolina
Posts: 461
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Ol'Ron is dead on. A/F meter is the way to go....
Had nothing but trouble with my 390 Holley so I switched to a 1403. It was still rich so I ordered a kit, had to jet down and change the rods, but now things are fine. I'm not good enough to read plugs so the meter worked for me.. Just my 2¢..
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3 pedals, 3 gears, no valve-covers.. Now THAT is a hot rod ![]() https://www.youtube.com/watch?v=ZmwwB34vxJE |
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#9 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,925
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While Richard was running these tests, he made a rod to improve either power or economy. One thing you have to remember his engine had an L-100 and 8.5 CR. So the distributor advance curve is critical. The key here is to tune for econmy, then power.
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