# Noah's '92 Firebird

**URL:** <https://forums.speedlife.net/t/noahs-92-firebird/198736>\
**Category:** Builds\
**Created:** [July 27, 2008, 9:46am UTC](https://forums.speedlife.net/t/noahs-92-firebird/198736 "2008-07-27T09:46:06Z")\
**Posts on this page:** 1\
**Showing post:** 80

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**Author:** ![SixSpeed454SS](https://avatars.discourse-cdn.com/v4/letter/s/e19adc/32.png) [@SixSpeed454SS](https://forums.speedlife.net/u/SixSpeed454SS)\
**Post date:** [August 24, 2008, 8:10am UTC](https://forums.speedlife.net/t/noahs-92-firebird/198736/80 "2008-08-24T08:10:57Z")

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> [@For those that don't think rear mount turbos work](https://forums.speedlife.net/t/for-those-that-dont-think-rear-mount-turbos-work/37562/2):
>
> 87 TA just took out some valve in the drum proportioning valve to allow more line pressure to the rear. Its worked good for him on his LT1 disk swap. Not sure exactly what he did but it worked
> 
> I’m not sure how it works but i know ppl have done disks swaps before and didnt change the drum MC or PV and it worked ok.

SSBC has an orfice for the trucks when switching from rear drums to rear disks. The Prop valve can be reused with the new orfice.  
Just an fyi…

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