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Old 08-11-2008, 05:05 PM
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Swaping jets & rods on my Edelbrock 650

Hey guys I just picked up the rods and jets the manual recommends for leaning out my carb some. Question I have is: Whats the '395' engraved on the jets represent? Both the stock jets and the supposed leaner jets have the same '395' etched into them. Don't tell me these are the same after all!

Thanks,
Ced

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Old 08-11-2008, 05:12 PM
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If those are the ONLY numbers on the jets, i'd have to assume they are the same. You can ck them if you have some numbered drill bits. (don't drill them, just ck the hole diameter! LOL)

Here is an Edlebrock jet/rod calculator but that number is not in it.

What about the rods? They may be a tad larger in diameter. If you have a mike, you can measure them. Sometimes they are just a few thou different.

Mark
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Old 08-11-2008, 10:26 PM
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Edelbrock stuff

All Edelbrock jets have the gratuitous "300" attached to them. A 395 means it's actually a .095 bore jet, a 401 means it's a .101 bore, etc. I don't know why, seems odd to me. Don't be discouraged, just return them, and give your metering rods a hard look. 7042 means .070 on the "low" side, (idle, light cruise), 42 means .042 on the heavy-throttle side. Do the math: You want to go leaner, get 7547's. The fatter rods have effectively decreased the size of your primary jets. Look at Summit's web-site for all the rods and springs, etc., Edelbrock offers. Go to Edelbrock's own site: all this data is there, free. It's an "800" call to speak to their techies, and they can be helpful. Remember, metering rods are a whole lot easier to change than jets. You'll find lot's of Edelbrock stuff on E-bay too. Best of luck.
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Old 08-12-2008, 02:07 AM
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Thanks for the replies guys. The 3 prefix is what I figured. Seemed too coincidental that it ended in 95 and was supposed to be a .095. I'll admit I know pretty much nothing about rod and jet combos but that would prob explain why the damn carb was so rich right out the box. Some wacked combo of .095 jets with the stock 7547 rods. Anyways I wound up swapping the jets out anyways (wasn't sure if they were the same at the time) and threw in some 7347 rods. It made a world of difference! Much better!

Thanks!
Ced
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