LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Little Sluggish at Low RPM's

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Old 05-12-2008, 07:23 PM
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Default Little Sluggish at Low RPM's

I'm running a '94 LT1. Brand new opti, and coil pack. plugs and wires are about 5 yrs old, with no more than 30,000 miles on them. Bosch platnum plugs, Taylor 8.8 mil wires. Stock motor with Flowmaster 3" exhaust, pacesetter headers, and removed Cat.

Always run 94 octane, with regular oil changes, and flushes. Cooling system is all new, and keeps her nice and cool.

Problem is that the car seems a little sluggish at lower RPM's. the 1500 - 2500 mark seems to be a little slow. Once past 2500 RPM, the motor seems to really open up.

Any thoughts? Maybe time for some new plugs? This isn't really a big "problem". I just seem to remember when the car had would really crank my neck back at low RPM, and now it doesn't. I guess that's what 190,000 Kilometers can do to an engine.
Old 05-12-2008, 07:37 PM
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switch to a set of NGK TR55's. Really good set of plugs...
Old 05-12-2008, 07:38 PM
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I'll second that. Ditch those Bosch plugs! TR55's are your best bet.
Old 05-12-2008, 08:49 PM
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New plugs and wires, drop the plug gap down a bit to help the old girl out.
Old 05-13-2008, 02:03 AM
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Cool guys. I was considering a plug swap. I'll try out the NGK's, I hear a lot of guys on this site raving about them. What makes them so special?



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