Eldebrock 1406 help!!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BLACK AND BLUE 67-72 · 03-11-2004, 02:43 PM

I have a 1406 on my truck and it runs a little rich, and I was wondering how I could fix this problem???? Someone also had told me to get a Metering Rod/ Jet kit, well I did and the bad part is that the rods that are in my carb are bigger than the ones in the kit, they are the biggest ones available, so now what?????

*Tanker350* · 03-11-2004, 04:09 PM

did you get edelbrock #1480 for the calibration kit. Look in the manual that came with the carb, b/c it allows you to lean it out pretty much. I have a 1407 and I wish I had something different. I have my idle/mixture screws out about two full turns each, and it seems to do pretty well.

BLACK AND BLUE 67-72 · 03-11-2004, 04:31 PM

I got kit# 1487 it is for the 1406 carb. Mine already has the .075 x .047 rods in it, the biggest available in the catalog. And the biggest that the kit goes to is .073 x .047.

**COBALT** · 03-11-2004, 05:45 PM

You'll have to replace the jets too.

Another thing is your fuel pump. Are you sure it's providing 5.5 - 6.5 psi? Stock fuel pumps can sometimes provide too much fuel...

nevada70chev · 03-11-2004, 06:34 PM

get hold of the book that comes with the carb. what i did was reveiw what i had currently, then went to the book for the leaner jets& rods, then did a quick consult with edelbrock. also do you have to have a smog test? pollution control stuff here requires us to have limits on CO2 etc. good luck. oh yeah, do you have an HEI? really helps with a hotter burn.

Bill72BB · 03-11-2004, 06:43 PM

like COBALT said you will probably have to replace the jets also if you have the kit ,put .095 primary jets and 073-047 rods that will get you 5% leaner from stock. if it is still too rich them got to .092 jets with 070-047 rods that will get you 8% leaner. you may also want to put a lighter springs on the rods.

68 Suburban · 03-11-2004, 06:54 PM

I have a basically stock engine and I am running mine at the 14 spot on the graph. Your carb comes from the factory at the 1 spot.

BLACK AND BLUE 67-72 · 03-12-2004, 12:39 PM

Nevada70, we don't even have a veichle inspection in Arkansas anymore.

And I am running an HEI with the plugs gapped at .045, it was at .035 and I regapped them but I couldn't tell any difference. I also have the book for the carb, but I don't really understand much of it. Bill, so you are saying to go to a smaller rod with different jets??

Now I am confused, how will that lean it out?? If you can't already tell I know jack sh!t about carbs!! I know how to bolt them on and hook them up, that's about it!!

BLACK AND BLUE 67-72 · 03-12-2004, 12:42 PM

By the way I haven't changed any rods or jets since I got it. What I meant earlier is that it already had the biggest rods available in it when I got it.

kevin from oc · 03-12-2004, 01:43 PM

Go to edelbrock's web site they have a troubleshooting section, if that doesn't help you can call their tech line which is also listed on their website sometimes there is a pretty lomg (on hold) phone wait but they have helped me in the past.....kc

68 Suburban · 03-12-2004, 01:44 PM

I would e mail their tech department. The guy that help me, sent me everything I needed for FREE! Yes, thats correct, FREE jets and needles.

http://67-72chevytrucks.com/vboard/s...brock+and+free

nevada70chev · 03-12-2004, 01:45 PM

ok, so it wasn't new when you bought it, right? call edelbrock tech support and they will give you the stock configuration for the jets and rods and springs. it is really simple, heck i even did it

, the stock configuration may be lean enough. if not, then again call tech support, give them the altitude of where you live and they will help as far as a suggestion to go to leaner jets and rods and springs. hey, the best thing about these trucks is it is a learn as you go and all the wisdom from this board. i haven't destroyed anything yet

just take your time and have fun...

BLACK AND BLUE 67-72 · 03-12-2004, 02:59 PM

No, it was brand NEW!! When I bought it.

BLACK AND BLUE 67-72 · 03-12-2004, 04:02 PM

Ok, I spoke with the guy at Edelbrock and he said to check the fuel pressure, if it was ok then check the float level, check for a hole in the float or debris on the needle or in the seat. So how can I check the fuel pressure, and where can I get a regulator and how much for one???

BLACK AND BLUE 67-72 · 03-12-2004, 07:58 PM

Ok, I checked the floats and adjusted them, checked for holes (none), and I checked for debris( looked almost like mud) in the float bowls and some rust also, now I need to know how to check the pressure and where to get a regulator and a guage fairly cheap.

Bill72BB · 03-12-2004, 09:23 PM

Quote:

Originally posted by BLACK AND BLUE 67-72
Ok, I checked the floats and adjusted them, checked for holes (none), and I checked for debris( looked almost like mud) in the float bowls and some rust also, now I need to know how to check the pressure and where to get a regulator and a guage fairly cheap.

Are you running an electric fuel pump?, If not pressure should not be the problem .

BLACK AND BLUE 67-72 · 03-15-2004, 02:37 AM

Bill, no I am just running a stock pump, but the guy at Edelbrock told me that sometimes it could still put out too much pressure for the carb. Like I said I don't know jacksh!t about a carb, just that it is running rich and I have no idea how to fix it. The carb came with the largest rods Edelbrock has, the jets I have no idea because they have nothing stamped on them to indicate their size, so I don't know what to do!!!????!!??

Bill72BB · 03-15-2004, 03:00 AM

The stock 1406 ,should have ,.098 Main jets and .095 secondary jets, the rod should be 075X 047 .

You stated it looked like mud in the float bowl , Do you have a fuel filter in the fuel line ?

if you have the book just look at the chart for the 1406 and install the rod and jets to lean the carb out . I would start with bullet #7 which is .095 main jets and 073x047 rods .
What makes you think the carb is running too rich ,?

BLACK AND BLUE 67-72 · 03-15-2004, 03:05 AM

yep I sure do have a filter, I wouldn't run one without it!!

Do you have any ideas on what the problem could be?

Bill72BB · 03-15-2004, 03:12 AM

if you have the book just look at the chart for the 1406 and install the rod and jets to lean the carb out . I would start with bullet #7 which is .095 main jets and 073x047 rods .
What makes you think the carb is running too rich ,?

BLACK AND BLUE 67-72 · 03-15-2004, 03:16 AM

because at idle it smells of raw gas and occasionally smokes and occasionally will flood out and die.

BLACK AND BLUE 67-72 · 03-15-2004, 03:18 AM

I just don't understand how going to a smaller rod would help, this is what is confusing me

Bill72BB · 03-15-2004, 03:22 AM

Don't think of them as smaller rods. Lets talk about the gas smell . Float level or sticky needle and seat is what I would look at.
When it idles do you see any gas coming out of the accelerator pump rod hole?

BLACK AND BLUE 67-72 · 03-15-2004, 03:28 AM

nope no gas out of accelerator pump hole, and I checked the floats for holes and for the 7/16" gap, and I cleaned the needles, seats, rods, and jets with carb cleaner, gas and compressed air, so I don't think that is the problem, the raw gas smell is coming from the exhaust.

Bill72BB · 03-15-2004, 03:41 AM

Have you pulled the spark plugs to see what they look like ,are the sooty black or wet. ?

03-11-2004, 04:31 PM	#3
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	I got kit# 1487 it is for the 1406 carb. Mine already has the .075 x .047 rods in it, the biggest available in the catalog. And the biggest that the kit goes to is .073 x .047. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-11-2004, 05:45 PM	#4
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	You'll have to replace the jets too. Another thing is your fuel pump. Are you sure it's providing 5.5 - 6.5 psi? Stock fuel pumps can sometimes provide too much fuel... __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

03-11-2004, 06:34 PM	#5
nevada70chev Registered User Join Date: Jul 2001 Location: reno, nv Posts: 646	get the book... get hold of the book that comes with the carb. what i did was reveiw what i had currently, then went to the book for the leaner jets& rods, then did a quick consult with edelbrock. also do you have to have a smog test? pollution control stuff here requires us to have limits on CO2 etc. good luck. oh yeah, do you have an HEI? really helps with a hotter burn. __________________ 70 LWB, 350/350 A/C, P/S, 3 Tone Paint (white cap, primer gray with black guide coat)

03-11-2004, 06:43 PM	#6
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,980	like COBALT said you will probably have to replace the jets also if you have the kit ,put .095 primary jets and 073-047 rods that will get you 5% leaner from stock. if it is still too rich them got to .092 jets with 070-047 rods that will get you 8% leaner. you may also want to put a lighter springs on the rods. __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,

03-12-2004, 12:39 PM	#8
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Nevada70, we don't even have a veichle inspection in Arkansas anymore. And I am running an HEI with the plugs gapped at .045, it was at .035 and I regapped them but I couldn't tell any difference. I also have the book for the carb, but I don't really understand much of it. Bill, so you are saying to go to a smaller rod with different jets?? Now I am confused, how will that lean it out?? If you can't already tell I know jack sh!t about carbs!! I know how to bolt them on and hook them up, that's about it!! __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-11-2004, 02:43 PM	#1
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Edelbrock 1406 help!!!! I have a 1406 on my truck and it runs a little rich, and I was wondering how I could fix this problem???? Someone also had told me to get a Metering Rod/ Jet kit, well I did and the bad part is that the rods that are in my carb are bigger than the ones in the kit, they are the biggest ones available, so now what????? __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA Last edited by BLACK AND BLUE 67-72; 03-12-2004 at 04:42 PM.

03-11-2004, 04:09 PM	#2
Tanker350 Account Suspended Join Date: Dec 2003 Location: Palm Desert, Ca Posts: 410	did you get edelbrock #1480 for the calibration kit. Look in the manual that came with the carb, b/c it allows you to lean it out pretty much. I have a 1407 and I wish I had something different. I have my idle/mixture screws out about two full turns each, and it seems to do pretty well.

03-11-2004, 06:54 PM	#7
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	I have a basically stock engine and I am running mine at the 14 spot on the graph. Your carb comes from the factory at the 1 spot. __________________ Just sitting here contemplating contemplation.

03-12-2004, 12:42 PM	#9
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	By the way I haven't changed any rods or jets since I got it. What I meant earlier is that it already had the biggest rods available in it when I got it. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-12-2004, 01:43 PM	#10
kevin from oc Registered User Join Date: Oct 2003 Location: oregoncity,oregon Posts: 129	Go to edelbrock's web site they have a troubleshooting section, if that doesn't help you can call their tech line which is also listed on their website sometimes there is a pretty lomg (on hold) phone wait but they have helped me in the past.....kc

03-12-2004, 01:44 PM	#11
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	I would e mail their tech department. The guy that help me, sent me everything I needed for FREE! Yes, thats correct, FREE jets and needles. http://67-72chevytrucks.com/vboard/s...brock+and+free __________________ Just sitting here contemplating contemplation.

03-12-2004, 01:45 PM	#12
nevada70chev Registered User Join Date: Jul 2001 Location: reno, nv Posts: 646	ok... ok, so it wasn't new when you bought it, right? call edelbrock tech support and they will give you the stock configuration for the jets and rods and springs. it is really simple, heck i even did it , the stock configuration may be lean enough. if not, then again call tech support, give them the altitude of where you live and they will help as far as a suggestion to go to leaner jets and rods and springs. hey, the best thing about these trucks is it is a learn as you go and all the wisdom from this board. i haven't destroyed anything yet just take your time and have fun... __________________ 70 LWB, 350/350 A/C, P/S, 3 Tone Paint (white cap, primer gray with black guide coat)

03-12-2004, 02:59 PM	#13
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	No, it was brand NEW!! When I bought it. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-12-2004, 04:02 PM	#14
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Ok, I spoke with the guy at Edelbrock and he said to check the fuel pressure, if it was ok then check the float level, check for a hole in the float or debris on the needle or in the seat. So how can I check the fuel pressure, and where can I get a regulator and how much for one??? __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-12-2004, 07:58 PM	#15
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Ok, I checked the floats and adjusted them, checked for holes (none), and I checked for debris( looked almost like mud) in the float bowls and some rust also, now I need to know how to check the pressure and where to get a regulator and a guage fairly cheap. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA



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03-15-2004, 02:37 AM	#17
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Bill, no I am just running a stock pump, but the guy at Edelbrock told me that sometimes it could still put out too much pressure for the carb. Like I said I don't know jacksh!t about a carb, just that it is running rich and I have no idea how to fix it. The carb came with the largest rods Edelbrock has, the jets I have no idea because they have nothing stamped on them to indicate their size, so I don't know what to do!!!????!!?? __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-15-2004, 03:00 AM	#18
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,980	The stock 1406 ,should have ,.098 Main jets and .095 secondary jets, the rod should be 075X 047 . You stated it looked like mud in the float bowl , Do you have a fuel filter in the fuel line ? if you have the book just look at the chart for the 1406 and install the rod and jets to lean the carb out . I would start with bullet #7 which is .095 main jets and 073x047 rods . What makes you think the carb is running too rich ,? __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen , Last edited by Bill72BB; 03-15-2004 at 03:11 AM.

03-15-2004, 03:05 AM	#19
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	yep I sure do have a filter, I wouldn't run one without it!! Do you have any ideas on what the problem could be? __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-15-2004, 03:12 AM	#20
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,980	if you have the book just look at the chart for the 1406 and install the rod and jets to lean the carb out . I would start with bullet #7 which is .095 main jets and 073x047 rods . What makes you think the carb is running too rich ,? __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,

03-15-2004, 03:16 AM	#21
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	because at idle it smells of raw gas and occasionally smokes and occasionally will flood out and die. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-15-2004, 03:18 AM	#22
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	I just don't understand how going to a smaller rod would help, this is what is confusing me __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-15-2004, 03:22 AM	#23
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,980	Don't think of them as smaller rods. Lets talk about the gas smell . Float level or sticky needle and seat is what I would look at. When it idles do you see any gas coming out of the accelerator pump rod hole? __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,

03-15-2004, 03:28 AM	#24
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	nope no gas out of accelerator pump hole, and I checked the floats for holes and for the 7/16" gap, and I cleaned the needles, seats, rods, and jets with carb cleaner, gas and compressed air, so I don't think that is the problem, the raw gas smell is coming from the exhaust. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

03-15-2004, 03:41 AM	#25
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,980	Have you pulled the spark plugs to see what they look like ,are the sooty black or wet. ? __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,

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