# 91 305 engine ?

**URL:** <https://forums.speedlife.net/t/91-305-engine/189411>\
**Category:** PittSpeed Automotive\
**Created:** [April 20, 2007, 2:45pm UTC](https://forums.speedlife.net/t/91-305-engine/189411 "2007-04-20T14:45:13Z")\
**Posts on this page:** 1\
**Showing post:** 66

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**Author:** ![neonracer01](https://avatars.discourse-cdn.com/v4/letter/n/9fc348/32.png) [@neonracer01](https://forums.speedlife.net/u/neonracer01)\
**Post date:** [April 29, 2007, 7:07pm UTC](https://forums.speedlife.net/t/91-305-engine/189411/66 "2007-04-29T19:07:29Z")

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> [@FS: 2007 GSXR 600](https://forums.speedlife.net/t/fs-2007-gsxr-600/29411/18):
>
> Hey neonracer, there is a new issue of “Camaro Performers” mag on the shelf. They do a simple low-budget build-up on a 305 and get 350ftlb and 372HP out of it. They used a stock 305 that was lying around in their garage (dished pistons - low compression) and standard flat tappet cam. Yours probably has the flat top pistons (tbi motor - higher compression) and roller cam, so you would do even better. They did not rebuild the bottom end, it was left factory.
> 
> The key components were Enginequest Vortec 180cc heads that they milled 0.030 off to get 60cc chamber size and a Comp XE268H flat tappet hydraulic 224/230 @ 0.050 & 0.477/0.480 lift (you could probably do better here with a roller if your motor is already set up for a roller cam.
> 
> They added an Edelbrock RPM air-gap vortec intake and a 650CFM Demon carb (pretty standard stuff).
> 
> No prices were given in the story except the retail on the bare heads which was $225 each.
> 
> Just saw it yesterday and thought ya might wanna grab a copy. :bigok:

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i was reading up on this the other day .

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