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09-20-2010, 02:47 PM
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#1 |
Title: Proud Olds Owner
Status: Offline
Join Date: Feb 2009
Location: Pittsburgh South
Posts: 84
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Olds 403 Issues
Rebuilt Olds 403 With 7a Heads Edelbrock Cam, Double Roller Timing Chain, Intake Carb!!! Runs Fine At Idle Except For When You Take Off Its Bogs Down And Gas Comes Back Out Of The Carb??? Has A New Carb On It!!! Got The Timing Set Rite I Believe What Is Going On Here Somebody Please Help!! Some People Are Telling Me I Should Have Degreed The Cam??? Is This A Timing Issue Or What??
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09-20-2010, 03:42 PM
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#2 |
Title: critical mass
Status: Offline
Join Date: Jan 2007
Location: Buffalo, NY
Posts: 3,616
Photos: 4
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Re: Olds 403 Issues
Sounds like fuel psi is to high get a reading on what your fuel PSI is when you are doing that. or all so make sure you float is set right.
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1981 Chevy monte carlo 396 BBC .060 over 9.7:1 voodoo 60203, 3:42 Posi GTA rims Upcoming 700R4 swap 8.61 1/8 mile on street tires 
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09-20-2010, 04:54 PM
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#3 | |
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Title: Olds Gearhead
Status: Offline
Join Date: Oct 2001
Location: Phoenix, AZ
Posts: 5,296
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Re: Olds 403 Issues
Quote:
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 Daily Driver - 355 cid, UltraDyne .485/.485, 217/221 cam, Performer RPM intake, 750 cfm QuadraJet, HEI, Heddman Headers, TH350/Hughes 2500 stall, 3.23 limited slip, BFG 245-60-14s on SSII wheels |
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09-20-2010, 06:01 PM
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#4 |
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Title: Proud Olds Owner
Status: Offline
Join Date: Feb 2009
Location: Pittsburgh South
Posts: 84
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Re: Olds 403 Issues
edelbrock!!! i have tried 2 other carbs also just to make sure the carb was not the problem and they all did the same thing
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09-20-2010, 07:01 PM
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#5 |
Title: They cal me Mellow Yellow
Status: Offline
Join Date: Aug 2006
Location: Buffalo NY
Posts: 10,494
Photos: 12
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Re: Olds 403 Issues
I agree....sounds like float issue, or fuel pressure. Since you've tried other carbs, I'm leaning toward fuel pressure being too high. Get a gauge on there.
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If a company advertises something as "indestructible", Trust me, I'm the guy you want testing it. iiiquaziii@yahoo.com, iiiquaziii on AIM/iiiquaziii on Yahoo messenger and gmail and gtalk. http://www.facebook.com/#!/profile.p...00001623773081 in facebook. 
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09-20-2010, 09:04 PM
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#6 |
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Title: Oldsmohaulic
Status: Offline
Join Date: Jan 2010
Posts: 1,036
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Re: Olds 403 Issues
X3 on fule supply sounds like high line presure. What do you have for a pump? If you are using hp pump you will need a regulator.
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09-21-2010, 04:39 AM
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#7 |
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Title: Proud Olds Owner
Status: Offline
Join Date: Feb 2009
Location: Pittsburgh South
Posts: 84
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Re: Olds 403 Issues
im using a stock fuel pump
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09-21-2010, 07:21 AM
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#8 |
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Title: Proud Olds Owner
Status: Offline
Join Date: Feb 2009
Location: Pittsburgh South
Posts: 84
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Re: Olds 403 Issues
what plugs should i use with 7A 350 heads and what should they be gap at???
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09-21-2010, 08:39 AM
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#9 |
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Title: Olds Junkie
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Join Date: Mar 2007
Posts: 724
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Re: Olds 403 Issues
Check the timing while you are at it.
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09-21-2010, 09:20 AM
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#10 |
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Title: Oldsmohaulic
Status: Offline
Join Date: Jan 2010
Posts: 1,036
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Re: Olds 403 Issues
Good point Run to Rund. Yes check your timing.What dist do you have and what have you done to it. When you have a problem like this you should go back and check out your whole ignition system and fule system.
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09-21-2010, 09:45 AM
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#11 |
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Title: Proud Olds Owner
Status: Offline
Join Date: Feb 2009
Location: Pittsburgh South
Posts: 84
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Re: Olds 403 Issues
i have check my dist and timing i have it set at 12 degree at idle and 32 i believe overall!!! i have messed with the timing so much it runs great at idle its when u take off it goes flat and bogs down!!! btw i have a knew dist also!
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09-21-2010, 10:38 AM
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#12 |
Title: I Have an Olds Life
Status: Offline
Join Date: Nov 2006
Location: Melville, Saskatchewan
Posts: 4,038
Photos: 10
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Re: Olds 403 Issues
Throw 4 more degrees at it.
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1988 CSC 424 ci SBO stroker coming soon........ 1994 c***y 4x4 Olds 350 TBI, rebuilt 4L60E, 3.73 gov lock 2010 Challenger SE, Stone White, leather, 18" wheels 2000 Dodge Dakota Sport Club Cab 4x4,3.9 v6, auto, 3.92 no slip 
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09-21-2010, 11:39 AM
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#13 |
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Title: Olds Gearhead
Status: Offline
Join Date: Oct 2001
Location: Phoenix, AZ
Posts: 5,296
Photos: 4
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Re: Olds 403 Issues
What brand distributor is it?
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Daily Driver - 355 cid, UltraDyne .485/.485, 217/221 cam, Performer RPM intake, 750 cfm QuadraJet, HEI, Heddman Headers, TH350/Hughes 2500 stall, 3.23 limited slip, BFG 245-60-14s on SSII wheels |
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09-21-2010, 11:48 AM
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#14 |
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Title: Proud Olds Owner
Status: Offline
Join Date: Feb 2009
Location: Pittsburgh South
Posts: 84
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Re: Olds 403 Issues
a kmj performance hei!!! other words some cheap stuff!!!
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09-21-2010, 12:26 PM
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#15 |
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Title: Oldsmohaulic
Status: Offline
Join Date: Jan 2010
Posts: 1,036
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Re: Olds 403 Issues
Is that a after market off shore unit from China. I would start there if it is not a quality dist.
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09-21-2010, 04:03 PM
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#16 | ||
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Title: Olds Gearhead
Status: Offline
Join Date: Oct 2001
Location: Phoenix, AZ
Posts: 5,296
Photos: 4
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Re: Olds 403 Issues
Quote:
Quote:
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Daily Driver - 355 cid, UltraDyne .485/.485, 217/221 cam, Performer RPM intake, 750 cfm QuadraJet, HEI, Heddman Headers, TH350/Hughes 2500 stall, 3.23 limited slip, BFG 245-60-14s on SSII wheels |
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09-21-2010, 04:16 PM
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#17 |
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Title: I Have an Olds Life
Status: Offline
Join Date: Nov 2006
Location: Melville, Saskatchewan
Posts: 4,038
Photos: 10
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Re: Olds 403 Issues
My stock weight HEI, I have 15 base and 36 total. I have one light, one medium spring. The other Autolite reman HEI has weird big weights and 23 base is needed to get 36 total. They do vary. Get your timing set where it needs to be and #86 Autolite plugs should be what you need.
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1988 CSC 424 ci SBO stroker coming soon........ 1994 c***y 4x4 Olds 350 TBI, rebuilt 4L60E, 3.73 gov lock 2010 Challenger SE, Stone White, leather, 18" wheels 2000 Dodge Dakota Sport Club Cab 4x4,3.9 v6, auto, 3.92 no slip
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