Need to establish a base line.

I have a Carter AFB model 9635 on a 72, 355 cuber, 4 speed. Cam, headers, etc. Am having a hard time with the Primary Jets and Metering rods. Plugs are R44T, as suggested by Chevrolet. Plugs are quite black and sometimes slightly wet.

When Idleing, smells rich (burns your eyes), but no smoke. Does run rather well though. Doesn't ping, doesn't run on when shut off, starts good. Fuel mileage is poor at best, I know it can do better.

Having a hard time finding information as to what Primary jet and Metering rod to start with. Presently I have a #120-400 primary jet and a #7147 rod. Good carb but very hard to find info on. The Carter book I have really doesn't give you good info on a starting point.

 

The Edelbrock 1400 series is a knockoff of the Carter. You may be able to find something there.

BigBlockk

Later.....

 

thanks

 

You can go online to Edelbrock and they have a Carb Owners Manual that you can down load. Part numbers are different but the rod/jet/spring values are almost identical to Carter's old strip kit hardware. I also have the FM/Carter AFB Tuning.pdf file. It's very similar but with Carter part #'s. Also I still have the carb info that came with one of my 9635's floating around somewhere that identifies what jets/rods/springs etc were installed originally.

Both Edelbrock and Carter info describe tuning tips to dial in better performance and drivability. I have a 600 on a '59 283 with 30/30 type cam that needed the power piston springs changed for better drivability after changing jets/rods.

 

If you can find the the manual with the original info I'd greatly appreciate you passing this on to me. This would give me my baseline.

Thanks
Dewey

 

Let's see if this posts correctly. Copied text from file.
G.D.


Listed below are the base calibrations of the AFB you
have just purchased. Also listed are the dimensions of
the rods, jets and spring's that calibrate your AFB.

These components are sold as replacement parts, 16P
- numbers for rods, 120P - numbers for jets, 61 P-
1083 and 61 P-1 085 for springs. The rod and jet parts
are sold in pairs. The springs are sold in kits consisting
of 3 or 5 pairs of springs.

Carters 10-201 strip kit contains an assortment of those
rods and jets listed as well as 2 different needle seat
assemblies.

The chart on the following page is a guide for making
changes in rods and jets that allow you to tune your
AFB.

BASE CALIBRATIONS

Carb# Rod# Pri-Jet Sec-Jet Spring/Color/load
9605 16-7047 120-398 120-395 61-226 ORANGE 7.25 oz.
9606 16-7047 120-398 120-395 61-226 ORANGE 7.25 oz.
9607 16-7047 120-398 120-395 61-226 ORANGE 7.25 oz.
9635 16-7347 120-398 120-395 61-226 ORANGE 7.25 oz.
9636 16-7060 120-398 120-398 61·1082 NATURAL 3.0 oz.
9637 16-7047 120-400 120-395 61-1082 NATURAL 3.0 oz.
9638 16-7347 120-398 120-395 61-226 ORANGE 7.25 oz.
9755 16-6547 120-410 120-404 61-226 ORANGE 7.25 oz.
9756 16-6547 120-410 120-404 61-226 ORANGE 7.25 oz.
9757 15-6547 120-410 120-404 61-226 ORANGE 7.25 oz.

METERING JETS
DIMENSIONS
Part# Orifice Diameter

*120-371 .071
*120-374 .074
*120-377 .077
*120-380 .080
*120-383 .083
*120-386 .086
*120-392 .092
*120·395 .095
*120·398 .098
120·400 .100
*120-401 .101
*120-404 .104
*120-407 .107
*120-410 .110

Metering Rod Dimensions
Rod# Econ Pwr
*16-691 .0760 .0550
16-690 .0745 .0470 (Replaced by 16-7347)
*16-388 .0730 .0600
16-7347 .0730 .0470
16W8500 .0725 .0470 (Replaced by 16-7347)
*16-544 .0715 .0580
*16-241 .0705 .0475
16-7060 .0700 .0600
16-7047 .0700 .0470
16-123 .0695 .0600 (Replaced by 16-7060)
16-695 .0695 .0470 (Replaced by 16·7047)
*16-98 .0680 .0555
*16-485 .0650 .0520
16-6547 .0650 .0470
*Contents of #10-201 Strip-Kit

 

Thanks G.D. Now I can go to work.

 

Hey Gasket Dude - Thanks again for the info. Motor runs nice and a noticable difference in fuel mileage. No more black sutt on the bumpers.

BTW, used the baseline info and that's the cure.

Thanks man