NEED HELP Surging 383

LVJJJ

Original poster
Member
Dec 29, 2015
65
Blaine WA
Got the 383 Stroker installed in the '94 GMC K1500, runs good and strong except for some surging, particularly upon start up and when cold. Doesn't do it much when hot.

Engine has about 600 miles on it, have replaced the break-in oil and just replaced plug wires, rotor and cap with AC Delco parts, has new plugs. Just can't figure out why is surges a lot sometimes, wonder if its fuel, need new throttle body on a new engine maybe? It has an MSD ADjustable Timing Control on it so I can advance the timing for more power, just have to watch out for pinging. I did run it for a while without the Timing control and didn't seem to make much difference. Any thoughts?
 

mrrsm

Lifetime VIP Donor
Supporting Donor
Member
Oct 22, 2015
7,639
Tampa Bay Area
...and this would be a Good Diagnostic Link regarding Surging for the 1994 Chevrolet Suburban 350 (383 CID) to take along:


...and THIS One, too:


[Mod edit: post moved to this thread]
 
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