'96 Caprice w/L99 engine - Chevy Impala SS Forum
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post #1 of 4 (permalink) Old 07-16-2001, 08:26 PM
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Would like to get more performance out of this engine, can anyone tell me where I can get performance parts? Everything seems to be for the LT1's. Thanks in advance for any help & info!
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post #2 of 4 (permalink) Old 07-17-2001, 01:41 AM
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Most things for the LT1 will work for the L99. Look at my sig. thats just some of the things that will work form a LT1.
post #3 of 4 (permalink) Old 07-17-2001, 08:14 AM
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Thanks for the info, I appreciate it! I thought maybe I wasn't going to be able to do much with the L99....I was wrong. I feel LOTS better now!
post #4 of 4 (permalink) Old 07-17-2001, 05:14 PM
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Your biggest limitation will be your heads/valvetrain/cam, as they were designed with fuel economy in mind. A friend of mine recently acquired an L99. Here is the modifications plan I suggested to him:
TransGo Shift Kit
Custom Precision Industries Torque Converter (NOT the Vigilante)
SuperStealth RamAir Intake Stage 3
Throttlebody Coolant Bypass
Ignition:Upgrade coil, wires, sparkplugs
Exhaust:Conclusions pending. Considering stock LT1 dual exhaust plus crossover, Random Technology cats, Tri-Y headers. Stiil thinking.
The exhaust should be tuned for an upper limit of no more than 300 horsepower to maintain drivability, economy, and a heathy torque band.
The heads are the big variable. A 3" stroke will rev more easily, but the valvetrain must be modified to handle and take advantage of that. Also, what kind of cam would you choose? The heads are the big question.
Finally, who's gonna reprogram it?
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