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03-23-2013, 08:02 PM
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#1 |
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Registered User
Join Date: Mar 2012
Location: edgartown mass
Posts: 852
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454 wont ideal
Ok the 454 in my wrecker has been sitting off the road for a bit now but its been started every 3 months or so. Now it wont hold an ideak at all. Thought it was the holly that ut had so changed that to an edl 600 that I had abd same probkem. Thinking air leak?? Not really shure to be honest. Help me as my father us all over mt shut lol
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1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car |
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03-24-2013, 12:27 AM
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#3 |
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Registered User
Join Date: Oct 2011
Location: central Oregon
Posts: 1,225
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Re: 454 wont ideal
bad gas ??????
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88 3+3 454 400 205 410 drw to srw still in pieces 90 3+3 350 400 205 410 srw 84 1/2 ton lb 6.2 4x4 parts truck |
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03-24-2013, 11:16 AM
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#4 | |
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Registered User
Join Date: Dec 2011
Location: Regina, SK, Canada
Posts: 622
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Re: 454 wont ideal
Quote:
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1979 Chevy Dually Crew 4X4 454, D60 Tru-trac, D70 Detroit Locker, 3.73, 4L80E/NP205 1971 GMC 3/4 Ton 4X4 |
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03-24-2013, 11:33 AM
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#5 | |
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Registered User
Join Date: Mar 2012
Location: edgartown mass
Posts: 852
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Re: 454 wont ideal
Quote:
ok now lets clear this up. i have a 454 in my wrecker ran goog but i dont have it on the road as of yet so she sits for months on end. got it going the other day and she ran great. rev up no back fires didnt load up. couldnt ask for more. then i started her up the next day and now she wont stay runing under 2k rpm and it keeps going up and down to the point she wants to die. thought it was the holly that i had on it so swapped it out for a eld 600. starts better but still the same thing. up and down. i have tryed to tune the carb no luck the timing is set at 8* and i have added new gas. my father is starting to get on my ass about this truck so i need to get it going right
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1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car |
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03-24-2013, 12:16 PM
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#6 |
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Registered User
 
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
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Re: 454 wont ideal
I think he's looking for the ideal idle....for his 454
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03-24-2013, 12:42 PM
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#7 |
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Registered User
Join Date: Mar 2012
Location: Harrison, AR
Posts: 19
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Re: 454 wont ideal
Sounds like it could possibly be a vacuum line somewhere, you might check those. It clears up after 2000 rpm? Or is it still having hiccups in the 2k+ range?
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 DustinCurrent Projects: 79' Chevy C10 SWB - 454BBC with TH350 tranny. just a few mods. LOTS of work in progress!! 89' Pontiac Firebird - 350SBC swap with 700R4, few bolt ons. On back burner for now. (Daily Driver) |
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03-24-2013, 01:14 PM
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#8 |
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Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: 454 wont ideal
x2
Sounds like a bad vacuum leak. Check all the vacuum lines to make sure none are hard or cracked and that all the ports on the carb & intake are capped or connected. Did you use a new carb base gasket? Hard to know if a used one is causing problems with internal passages between Holley & Edelbrock so a new one is a good place to start if you reused the old one. I know my Edelbrock carb came with a steel base plate for under the carb that it needed to cover some intake variations where standard carb gaskets didn't have any support. You could need one of those to make it work right too.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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03-24-2013, 06:20 PM
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#9 |
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Registered User
Join Date: Dec 2011
Location: Regina, SK, Canada
Posts: 622
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Re: 454 wont ideal
Also with the one day good, next day bad and wasn't running for a while. Could have been rust in the tank and plugged something in the carb. Carb bowls can dry out too and get debris in them, maybe some of this plugged something.
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1979 Chevy Dually Crew 4X4 454, D60 Tru-trac, D70 Detroit Locker, 3.73, 4L80E/NP205 1971 GMC 3/4 Ton 4X4 |
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03-24-2013, 08:16 PM
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#10 |
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Registered User
Join Date: Mar 2012
Location: edgartown mass
Posts: 852
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Re: 454 wont ideal
Filter is good and I changed to a new carb. Must be vac leak somewhere. There are no vac lins on the motor and all the ones one the carb are seald
Posted via Mobile Device
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1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car |
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