C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Feb 9, 2002 | 07:33 PM
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Hey guys! As some of you know, I am in Miami, just fixed my spun bearing and, some other cool stuff going on. My brother has a completely stock '86. I am not at all familiar with easy L98 mods. What can we do to improve this cars performance without spending a lot of money?

All info appreciated... :cheers:
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Old Feb 9, 2002 | 07:36 PM
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Default Re: L98 (SCALF)

What do you consider a "lot of money". Give us a ball park.
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Old Feb 9, 2002 | 07:44 PM
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Well, I know you guys do some simple things like, opening the air box, boostinging pressure, etc. Easy tinkering stuff, not opening up the engine. He can wait on the heavy stuff until he's ready for a rebuild. How about fine tuning tips and "tweeking"?
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Old Feb 9, 2002 | 07:50 PM
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Default Re: L98 (SCALF)

Gary, i got the most performance out of a K+N air filter,eliminating the precats and better mufflers :cheers:
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Old Feb 9, 2002 | 07:58 PM
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Default Re: L98 (WINNER)

1. Cut open the air filter lid and get a K&N filter.
2. Adjust distributor to 8.5 degrees BTDC timing.
3. Adjust throttle position sensor (TPS) to 0.68v at idle.
4. Remove main cat. :reddevil

Is the car an auto or stick?
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Old Feb 9, 2002 | 08:07 PM
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Hey scorp...the car is an auto
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Old Feb 9, 2002 | 08:11 PM
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Hey scorp...the car is an auto
Hey may benefit from adjusting the kickdown cable on the tranny then at the throttle body. I forget the exact procedure (i'm a stick), so I'll let somebody else jump in on that one.
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Old Feb 9, 2002 | 10:29 PM
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I just set mine to the recommended .54v and it runs perfect. What will your setting improve?
Very very slight edge in throttle response.
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