Thread: Engine knock
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Old 08-08-2013, 08:04 PM
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hydrex hydrex is offline
Dodge Ram Forum Senior Member
Join Date: Sep 2009
Location: Penobscot, Maine
Age: 64
Posts: 2,531
Gender: Male
Vehicle: 2005 QC 4X4 HEMI RAM
Trim Level: Thunder Road
Color: Mineral Grey
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 8
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Try going back to stock and see what happens, regardless, drive carefully and try not to let it knock. Knocking is very bad on a hemi. I have my truck dyno tuned with a Diablo Predator. My tuner monitors knock retard and adjust timing and fuel trims for 93 octane summer tune and 87 for winter. He welds a bung in the exhaust and installs a wideband O2 sensor. I don't have a lot of faith in the canned tunes that come with the tuners, big fan of custom dyno tuning utilizing the Diablo tuners, not using the canned tune. If you have some low octane crap gas, and you still get a little knocking with the stock tune, dump in a bottle of NOS brand octane booster, maybe 2.
Inertia Spartan Plus cam, Circle D 3,000 rpm stall converter,Sonnax line pressure booster, MagHytec 68RE pan,and differential cover, Vararam, JBA's with cut outs, Rancho 9000's,3:92's, extra rear leaf.Line-X Bedliner,GY Armortracs, 225,000 miles To Hell and back. 14.2/96 mph NEDW
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