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73-87 Chevy _ GMC Trucks => Performance => Topic started by: str8bloc on September 24, 2009, 07:57:05 PM
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i have a 86 350 with r45ts .50 thous accel coil edelbrock 600 carb 2.5 tru duals with cherrybomb glasspacks i hooked up my vacumn gague on my vac adv with a T to manifold vacumn and im getting 15hg when i rev it drops 10 to when i drive it sputters when i give it full throttle how do i time and adjust my air fuel do i plug off vacum or do i leave it in the T . when i drive it and let it sit about 5 mins its takes a sec to start when its been off overnight it takes 2 pumps and it starts
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I was having similar problems with my truck too. It's a completely different setup from yours, but they sound like they have similar problems. Mine usually takes a pump or two to start it also. Before I tore the motor apart, one thing that helped a lot was a good intake seal...my intake gaskets were all blasted out and causing a major vacuum leak. My truck ran a bunch better after that. Hopefully somebody else jumps in here with some suggestions.
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well i threw my accel u groove plugs at .45 and its runnin greaat now no more sputter on top end
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Were you having trouble with fouling out plugs? My motor seemed to foul plugs like crazy. I may mess with my plug gaps too and see if that helps. I think I had mine set at .035.