wanna make 650-700hp

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,670
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Phoenix Az
Yes it can be done... Big single turbo S475, 45-60% injectors, and keep power pretty stock until 2600-2700. Your engine will not last at 750hp keep it around 675hp and use that power very rarely. Like track only.

i approve this ad.

but add in dual fueler to keep rail up.
 

jgt1982

New member
Jul 11, 2012
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tn
Chevy 1925 thats the way i have been looking just didnt know for sure if it was the rite or not
 

Hot COCOAL

May the farce be with you
Jun 9, 2012
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Twin the stock charger with an epr kit from trent, s472?
+40% injectors, build your trans, mod the regulator in the cp3(lbz) port the drivers side rail fitting and enjoy 575-600 whp for a while, you are going to need a set of arp headstuds too
 

paint94979

Beer Nazi
Sep 18, 2006
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Twin the stock charger with an epr kit from trent, s472?
+40% injectors, build your trans, mod the regulator in the cp3(lbz) port the drivers side rail fitting and enjoy 575-600 whp for a while, you are going to need a set of arp headstuds too

why are you giving advice?... The standard EPR kit comes with a 75mm turbo and why in the hell would anyone waste the time to install 40% injectors in an LB7 at 600hp? I make a true 700hp and my injectors are 100% stock. why does he "need a set of arp headstuds"? I run 55psi on stock head bolts without issue...
 

Hot COCOAL

May the farce be with you
Jun 9, 2012
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why are you giving advice?... The standard EPR kit comes with a 75mm turbo and why in the hell would anyone waste the time to install 40% injectors in an LB7 at 600hp? I make a true 700hp and my injectors are 100% stock. why does he "need a set of arp headstuds"? I run 55psi on stock head bolts without issue...

Your one of those guys that likes to see when shit breaks huh?
I dont like to push the envelope, id rather use a half of what i got and run the parts in their optimum range, rather than max out every aspect of the system and cross my fingers.

You also have alot more experience than the op, you can fix anything that breaks too cant you?

I thought trents kit was a 72 with the option to go with a 75, thats why i followed it with a? mark.

Kudos to you for running past 50psi on factory head bolts, its pretty commonly known that that is asking for gasket failure, especially on a lb7, even for a lbz head studs are recommended for applications above 50psi

But really i think this is what you want right here.....


:hail2::bow::cheerleader::ballons:
Congratulations on pushing your stock components to the brink
 

jgt1982

New member
Jul 11, 2012
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tn
thanks for all the info guys i am going to keep the hp around 650 with a 66 mm arp head studs add a extra cp3 rework the top end with a sun coast to back it all
 

bradyn

New member
Sep 22, 2010
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kansas
Isn't it common knowledge that stock head bolts are good for 60 psi? I ran 60 psi for darn near a year and had zero issues with my heads lifting.
 

08liftedHD

New member
Jan 5, 2012
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You can "make" 750hp and DD it on a 500-550 tune without a full build. Even 40% overs and a S300 frame turbo (or S475/80 over stock, but pushing the stock turbo pretty hard) will get you there pretty easy and be streetable. BUT if you want to DD 750hp your motor won't live forever. Shoot, even stock motors go pop sometimes.

I made 722hp (have repeated and dynos between 680-722) but I never DD that tune. Probably wouldn't even run that tune at the track unless I had some cash saved for just in case. Good luck with the buildup.
 

jgt1982

New member
Jul 11, 2012
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tn
thanks guys for all the info/i was going to go to beans but i am down in miami working so no beans this year