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04-11-2011, 01:14 PM
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#1 |
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Registered User
Join Date: Feb 2010
Location: carthage missouri
Posts: 81
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84 c10 454 Stammering and hard to accelerate from 15-30 mph??
hey guys what would cause a truck to have a hard time getting from 15 to 30 mph? it starts and idles great, Runs solid up to 15 and then starts shakin and wont accelerate hardly...
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04-11-2011, 02:27 PM
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#2 |
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Registered User
Join Date: Mar 2011
Location: Kalamazoo, MI
Posts: 120
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Re: 84 c10 454 Stammering and hard to accelerate from 15-30 mph??
is your 84 carb or tbi?
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04-11-2011, 06:19 PM
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#3 |
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Registered User
Join Date: Feb 2010
Location: carthage missouri
Posts: 81
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Re: 84 c10 454 Stammering and hard to accelerate from 15-30 mph??
Carbed 625 demon
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04-11-2011, 07:25 PM
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#4 |
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Registered User
Join Date: Mar 2011
Location: Gainesville, Fl
Posts: 178
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Re: 84 c10 454 Stammering and hard to accelerate from 15-30 mph??
Is your BB stock ? with what you have barely described sounds like too small of a carb , 650 cfm is small for even a stock 454 . check your timing .
__________________
Scott 82 step side aka " Bouncy " 73 GMC Long bed Vortec 5.7 |
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04-12-2011, 03:46 PM
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#5 |
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Registered User
Join Date: Feb 2010
Location: carthage missouri
Posts: 81
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Re: 84 c10 454 Stammering and hard to accelerate from 15-30 mph??
Yeah guys its stock it has an aftermarket intake and i thought about it being too small but im not rodding this truck just trying to get it running right, i have read on other forums of people running the same demon 625cfm carb on their 454 trucks...
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04-12-2011, 03:53 PM
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#6 |
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Registered User
Join Date: Mar 2011
Location: Joplin, MO
Posts: 161
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Re: 84 c10 454 Stammering and hard to accelerate from 15-30 mph??
Just sen it to me and I'll send ya my 305!!!
J/K...My truck did that very same thing last week, loading up at low RPM and after idling for a while. I had the carb rebuilt and the float level was set a little high. Adjusted the float level and added two fuel filters cause there was a little trash in the carb. I agree with the previous poster about checking your timing. Have you looked at the color of your plugs lately? Wouldn't hurt to put a vacuum gauge on it either to see if you have any leaks. The Demon 650 will easily run a stock (except intake) 454, especially if you are easy on the throttle. What RPM range are you noticing it in? Keep us updated... I am just down the road from ya in Webb City
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Jeremy I have done so much, for so long, with so little, I can do anything with nothing! 1984 GMC Sierra Classic-1/2 ton-SWB (R.I.P.) 1986 GMC Suburban 3/4 ton 4x4 2014 GMC Sierra LTZ Z-71 Crew SWB Last edited by 1425956; 04-12-2011 at 03:58 PM. Reason: Question |
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04-12-2011, 09:56 PM
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#7 |
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Registered User
Join Date: Feb 2010
Location: carthage missouri
Posts: 81
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Re: 84 c10 454 Stammering and hard to accelerate from 15-30 mph??
I'm not real good at timing I think I fd it up when swapping intakes lol Ik it is off
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