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| Naturally Aspirated No boost under your hood? You can still feel the love here. |
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03-10-2008, 08:03 PM
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3800 Member
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Ryan Murray
Location: Chandler, AZ
Join Date: Feb 2008
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meatyshells holds the following arcade championships:
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high reving
what is most likely the first thing to break when revving in the 6500-7000 range?
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Manual converted, T-top converted, Abbott Racing custom long tube headers, off road y-pipe, full 3'' slp loud mouth II exhaust /w dual Super Trapp glass pack tips, sphon lower control arms, LCA reloc brackets, , #105 springs, PP heads and intakes /w oversized valves, Abbott Racing cam 210/220 .512/.512 112, 32mm front sway bar, BMR boxed Subframe connectors, ls1 aluminum driveshaft.
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03-10-2008, 09:43 PM
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3800 Senior Member
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JOHN LEVERENZ
2003 monte carlo ss n/a
Location: IL
Join Date: Mar 2007
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your wallet 
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03 monte carlo ss
1 K&N Gen. II Intake Kit (FIPK)
2 stage 1 68 mm throttle body/ with heat shield
3 ceramic coated slp headers
4 Borla exhaust
5a Intense stage 3na cam package
b Intense stage 3 heads 1.7 rockers on exhaust
c single roller timing set
d ported,polish lower intake / ZZP upper intake
6 Custom Intense Dyno Tune pcm
7 Intense poly motor mounts
8 Intense converter
9 Royal purple 10w-30 oil mobil oil filter
and more 
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03-10-2008, 11:12 PM
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3800 Senior Member
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Shawn Mayes
1999 GP GT
Location: Holt, MI
Join Date: May 2006
Posts: 289
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dbtk2 holds the following arcade championships:
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I've been revving to over 7k for more than a year now, my bottom end has 233,000 miles on it and I've had no issues, and this is with ~350whp off spray and over 400whp on spray. I run stock lifters, half stock pushrods (due to them needing to be different lengths), stock rockers, modded retainers, half 90/half 105# springs, stock valves, stock style timing chain/tensioner, still have balance shaft, XPZ cam. Up until september I was running this same setup but with all stock pushrods, all 90# springs, and an XP cam instead. I also ran modded stock 1.7 rockers on the intake. On that setup my limiter was 7k rpms, on my current setup its 7250.
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1999 Green GT, 242,700+ miles and still going strong!
11.9912 @ 112.99 w/1.729 60' before Gen V/N*
379.9whp on 93 octane, mustang dyno
413.4whp on spray, fueling issues (15:1 afr  )
2003 CBR600RR
100% stock 
11.38 @ 123.64
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03-11-2008, 03:20 PM
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3800 Member
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Ryan Murray
Location: Chandler, AZ
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meatyshells holds the following arcade championships:
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sweet, so what you are saying is i wont have a problem haha.
courious why the different pressure springs?
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Manual converted, T-top converted, Abbott Racing custom long tube headers, off road y-pipe, full 3'' slp loud mouth II exhaust /w dual Super Trapp glass pack tips, sphon lower control arms, LCA reloc brackets, , #105 springs, PP heads and intakes /w oversized valves, Abbott Racing cam 210/220 .512/.512 112, 32mm front sway bar, BMR boxed Subframe connectors, ls1 aluminum driveshaft.
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03-12-2008, 02:48 AM
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3800 Guru
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Chris Bores
99 Grand Prix Gt
Location: Ohio
Join Date: Aug 2007
Posts: 556
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i thinks its because the intake valve lift is higher then the exhaust valve lift,
i could be wrong though
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custom cai, custom exhaust, hv3, intense pcm, 180 t-stat sd hood, zzp stage 2 tb, intense stg 1 cam, hptuners, and headers. spun 2 rod bearings on two different rebuilds! future modds top swapped genv,intercooled,cam,and much more
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03-12-2008, 08:20 PM
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3800 Senior Member
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Shawn Mayes
1999 GP GT
Location: Holt, MI
Join Date: May 2006
Posts: 289
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dbtk2 holds the following arcade championships:
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Quote:
Originally Posted by meatyshells
sweet, so what you are saying is i wont have a problem haha.
courious why the different pressure springs?
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The main reason is because I am cheap to be honest with you.....
Spring bind on the 90# springs is .580", and I like the 90# springs because of only having 90# pressure at installed height but the ramp rate on how fast the pressure increases is much greater. So at the lifts I am running it has a good amount more spring pressure than the 105's. But with my intake lift being .563" I decided I didn't want to cut it that close (since bind is .580"), so I put some 105's on the intake because they support .600" lift. But the 90# springs are better spring IMO which is why I left them on the exhaust. I would've just done 130's, but I run a stock timing chain (because I wanted to retain my balance shaft), so it can't support them.
It is a very odd combination and I only know of 1 other guy running it (because he used the other half of my 2 sets of springs ), and I don't recommend it.
__________________
1999 Green GT, 242,700+ miles and still going strong!
11.9912 @ 112.99 w/1.729 60' before Gen V/N*
379.9whp on 93 octane, mustang dyno
413.4whp on spray, fueling issues (15:1 afr )
2003 CBR600RR
100% stock
11.38 @ 123.64
Last edited by dbtk2; 03-12-2008 at 08:23 PM.
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