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turbo GSR 10 psi will 440 be big enough

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Old 05-17-2005, 05:20 AM
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Default turbo GSR 10 psi will 440 be big enough

Hey i have a turbo GSR and i plan on running 10 psi. I have a fmu and a VAFCII, my guestion is, will 440 be big enough or do i need to go bigger? thanks for the help
Old 05-17-2005, 06:14 AM
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Default Re: turbo GSR 10 psi will 440 be big enough (fast_96gsr)

i dont think you will need the vafc and the fmu.....you do need a way to retard the ignition timing


440's will be barely cutting it. get at least 550's and save yourself the trouble later on. im pissed i got 440's
Old 05-17-2005, 07:04 AM
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Default Re: turbo GSR 10 psi will 440 be big enough (fast_96gsr)

Depends on your final whp goals. 440's are usually good for like 300whp. 550's usually for like 375-400whp. 1000's would give you some room for growth
Old 05-17-2005, 08:59 AM
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Default Re: turbo GSR 10 psi will 440 be big enough (Dunc)

440s imo can be pushed SAFTELY wo about 260-275

most gsr's will be running 280-300 WHP at 10 psi. i'd get 550's or 580's to be on the safe side and alsoif you dont plan on " growing" anymore.
Old 05-17-2005, 09:50 AM
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Default Re: turbo GSR 10 psi will 440 be big enough (project dc2)

Agreed. It depends on the size of your turbo.

If I recall, my 450's were around 80-85% duty cycle at ~250whp.
Old 05-17-2005, 11:10 AM
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Default Re: turbo GSR 10 psi will 440 be big enough (fast_96gsr)

I made 311hp on 450cc injectors. Completely maxed out. I wouldn't suggest doing that however.
Old 05-17-2005, 11:16 AM
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Default Re: turbo GSR 10 psi will 440 be big enough (ITR981002)

What hp and NOT psi is your goal? 10psi could net you 300hp or it could net you -+ 100hp.... What fuel pump are you using?

IMO in most cases if you're considering the 'norm' T3/T4, you should be OK with 440s. I was using stock injectors, stock fuel pump and safely netting 300hp on T3/T4 with AFC.
Old 05-17-2005, 12:03 PM
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Default Re: turbo GSR 10 psi will 440 be big enough (swlabhot)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by swlabhot &raquo;</TD></TR><TR><TD CLASS="quote">What hp and NOT psi is your goal? 10psi could net you 300hp or it could net you -+ 100hp.... What fuel pump are you using?

IMO in most cases if you're considering the 'norm' T3/T4, you should be OK with 440s. I was using stock injectors, stock fuel pump and safely netting 300hp on T3/T4 with AFC.</TD></TR></TABLE>

you were running stock gsr injectors with vafc? I would think that would cause u to lean like whoa
Old 05-17-2005, 01:34 PM
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Default Re: turbo GSR 10 psi will 440 be big enough (swlabhot)

That is most definitely not safe.
Old 05-17-2005, 02:03 PM
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Default Re: turbo GSR 10 psi will 440 be big enough (Rory Breaker)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rory Breaker &raquo;</TD></TR><TR><TD CLASS="quote">That is most definitely not safe.</TD></TR></TABLE>

yea really.......

fast_96gsr- if you really really want some 440's...buy some 550's and ill trade you my 440s for them
Old 05-20-2005, 05:29 AM
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Default

Yea i think i am gonna buy 550's and iam gonna get a walbro pump. I am in the procces of getting a vortech FMU and a vafc, so hopefully i will be alright. I dont wanna go much over 10 psi for i got stock rods. what do you think would be safe, i have wiseco 8.5:1 dished pistons, reconded rods with arp bolts. A golden eagle block guard, and arp headstuds. also the fuel mods were listed above, what would be safe on this setup? i dont really know for sure so i didint want to blow my shiz up. thanks
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