are they any good on a stock 305 LB9 would I gain anything for the large amount of money they cost..??

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92 z-28 G92 black with white racing stripes.
Dynomax cat back
Hypertech chip
5 speed

 

I just added new eb intake, eb runners, and ported the plenum along with eb headers, 3" cat and 3"catback. It's a serious day and night difference and it tachs out to 6K now whereas before it was only 5K. My car is a 91 z28 305 5sp with the LB9 as well. Once your setup like this, make sure you have at least 3.23 gears at minimum or your bottom end is gonna be weak. I haven't been able to hit the track yet as I'm still breaking in the 3.42 gears I just got. These gears feel perfect for the setup for both street and track.

Bugs