How much boost should my engine be able to handle

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How much boost should my engine be able to handle

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Camaro >> Brand Review >> Nitrous, Super Chargers, & Turbos >> How much boost should my engine be able to handle

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How much boost should my engine be able to handle - 6/7/2008 5:42:03 PM

crash_cohen

Posts: 48
Joined: 5/15/2008
Status: offline

Hi I am trying to find out how much boost I should safely be able to run my car at if any one has a very good idea. I have a 95 Z28 with a 5.7L bored to a 355 with speedro forged dished pistons for a compression ratio of 9:1, stock crank magnafluxed and polished, stock rods shop peened and modified for floating wrist pin. The fuel system is upgraded to 65 lbs/hr injectors, walbro 255 in tank pump, msd fuel pump booster. Exhaust is hooker long tube headers with free flowing 4" exhaust. The blower is a ati procharger p1sc centrefugal supercharger with custom plumbing with blow through mass air sensor, custom intercooler, and greddy "r" bypass valve.
Any help would be appreciated. Thanks.

Post #: 1

RE: How much boost should my engine be able to handle - 6/8/2008 11:37:04 AM

crash_cohen

Posts: 48
Joined: 5/15/2008
Status: offline

any help....

(in reply to crash_cohen)

Post #: 2

RE: How much boost should my engine be able to handle - 6/8/2008 3:34:16 PM

BigNic

Posts: 1389
Joined: 1/23/2007
Status: offline

the internal work youve done will have deffinatley uped you compression so its gonna reduce the amount of boost you can run i doubt youll be able to run more than about 4-5 lbs without going back through and forgeing internals

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(in reply to crash_cohen)

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RE: How much boost should my engine be able to handle - 6/8/2008 4:10:22 PM

crash_cohen

Posts: 48
Joined: 5/15/2008
Status: offline

I have lowered my compression ratio not raised it. correct me if im wrong but the stock LT1''''''''s run on about 10.5:1 compression and as far as I know they can take around 5lbs. I have forged pistons which lowered it to 9:1 meaning it should be able to take more boost then before, I am currently running 8lbs with no problems at all. So im just curious if there is any guys with more knowledge about forced induction to see if I could go with higher boost then this without breaking connecting rods, blowing head gaskets ect...

Aswell as down the road how much boost I could top out at and what all I would have to do with the internals inorder to run alot higher boost.......20lbs ect..

< Message edited by crash_cohen -- 6/8/2008 4:39:45 PM >

(in reply to BigNic)

Post #: 4

RE: How much boost should my engine be able to handle - 6/13/2008 2:20:26 PM

buckfever

Posts: 236
Joined: 11/26/2007
Status: offline

with 9-1 you should prolly be able to run 12lbs or so safely.

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