# Orr89rocz's 1989 Camaro Iroc-z 5.7L

**URL:** <https://forums.speedlife.net/t/orr89roczs-1989-camaro-iroc-z-5-7l/188547>\
**Category:** Builds\
**Created:** [March 12, 2007, 9:09pm UTC](https://forums.speedlife.net/t/orr89roczs-1989-camaro-iroc-z-5-7l/188547 "2007-03-12T21:09:21Z")\
**Posts on this page:** 1\
**Showing post:** 660

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**Author:** ![Quik](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/quik/32/5979_2.png) [@Quik](https://forums.speedlife.net/u/Quik)\
**Post date:** [December 22, 2009, 9:55am UTC](https://forums.speedlife.net/t/orr89roczs-1989-camaro-iroc-z-5-7l/188547/660 "2009-12-22T09:55:26Z")

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> [@The names,,,, Kevin,,,, Wheatfield NY](https://forums.speedlife.net/t/the-names-kevin-wheatfield-ny/41784/21):
>
> Havent measured backpressure, but thinking of tearing things down to weld in a bung for it.
> 
> For a 382 pulling that high i dont think you can go wrong with bigger a/r’s. If it spools at like 4500 then you still have a wide powerband from 4500-6200+ rpm

typically a good setup gives you 3k worth of power band. thus why i was thinking 3200stall and shift around 63-6400.

something to think about your setup is working and since you dropped gear use it to your advantage. use the powerband you have now you change power bands then you might want to reconsider gear

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