Recent content by Stepsidejunkie
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79 C10 4.8 4L60 Swapped But No Acceleration
Thank you for the reply. I'll have to ask the guy that cut down the harness and re-chipped the pcm what tune he put on it. I just assumed he left the stock mapping. However, I swapped out the 50psi flex-fuel regulator for a 58psi unit, and it transformed the engine. Much more responsive...- Stepsidejunkie
- Post #9
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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79 C10 4.8 4L60 Swapped But No Acceleration
Thanks for the reply. I'm not 100% sure that I'm not confusing converter lockup with shifting to 4th, so I'll check for rpm change. I seem to remember it was significant, but I cant remember. On the fuel pressure front, after doing a little more research, I think I may have been sold a fuel...- Stepsidejunkie
- Post #7
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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79 C10 4.8 4L60 Swapped But No Acceleration
I'll need a passenger to get O2 readings, but the fuel pressure is a steady 50psi measured at the shrader valve on the passenger side fuel rail. It will spike for a second, then go right back to 50psi when I accelerate. At idle it is solid at 50psi. As an aside, I did put a new fuel pressure...- Stepsidejunkie
- Post #5
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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79 C10 4.8 4L60 Swapped But No Acceleration
Thank you for the replies. I will hook up a fuel pressure gauge and report. O2 sensors were reading right on the money at idle, and when I rev, in Park, they adjust to neutral fairly quickly. I have not checked that for awhile though, so will check again. I'll see if I can get a rider to...- Stepsidejunkie
- Post #4
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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79 C10 4.8 4L60 Swapped But No Acceleration
New to being a member of the forum, but pulled plenty of great advice from it doing my swap. My problem is the truck does not accelerate as fast as it should. Feels and sounds like a carb'd engine starting in second gear and bogging down. Can't even do a one-wheel burnout in the grass...- Stepsidejunkie
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- Replies: 8
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
