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06-11-2006, 08:56 PM | #1 |
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Join Date: Jan 2005
Location: Eastern Nebraska
Posts: 611
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New crate 350, backfires...stumbles...
The crate 350 is in and running...but not very well. Here's link to complete details:
http://67-72chevytrucks.com/vboard/s...d.php?t=198802 We set timing to 4 BTDC and she runs, but idles rough. When you drive her she stumbles low in the RPM range, and even backfires at times. But once you get her reved up a little it screams! It's got Holley 1850-2 600 CFM carb that came off old engine. Didn't do much to carb besides de-grease. HEI from old truck. New cap / rotor / plugs and wires. Suggestions? Could the harmonic balancer have slipped and not be giving me true timing mark? Should I be timing differently with the HEI dist.?
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'72 Chevy K-20 Crate 350, SM465, 4.10's |
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