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03-09-2009, 12:09 AM
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#26
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11 Second Club
Join Date: Feb 2008
Location: Edison, NJ
Posts: 4,620
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^yup... and only year with steel fuel tank.
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1999 Z28 Convertible. 6 speed swap, wide cowl hood, full hockey stripes, and a whining 10 bolt.
2008 Sierra Vortec Max. 6.2 swapped, headers, Magnaflow catback, GMPP CAI, NHT optioned tow package.
2006 GTO, 11.48 @ 118.3
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03-09-2009, 04:41 AM
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#27
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Join Date: Jan 2007
Posts: 5,623
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wanna sell that 400?
nvm found it 
dude just plop an LS2 in there. the cost of parts to make the 5.3 like you discribed would be more than to just get a better motor. at least with the LS2 you've got the option down the line to stroke it to a 427 and the LS2s are pretty damn nice to start with. I'm sure others have said this already but I was to lazy to read
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2000 Tahoe Z71 5.7
1982 Z28 Pacecar 305
1999 S10 
Last edited by bubba428; 03-09-2009 at 04:47 AM.
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03-09-2009, 05:21 AM
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#28
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Avatar Abuser
Join Date: Aug 2004
Location: 08721-1716
Posts: 5,056
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fix what you have before you start thinking about exotic motor swaps.
swapping the motor is not going to raise the car's reliability by itself. there are too many variables to say i'm going to drop in a X motor and not have to ever worry about the car. lots of people have been in the situation you're in now and they find out it's much cheaper and easier to fix what you have. besides, it sounds like good money chasing the bad. what will you do with the motor you have now? mothball it?
it sounds like you are looking for an easy way out. swapping a motor in when the motor you have is more than capable of filling your needs seems silly. stop trying to find the easy way out and fix your car. once it's running reliably, then think about swapping motors because then you will most likely have the base of experience to get yourself out of a jam. but if you keep jumping from this idea to the next without ever getting your hands dirty, then you're not really learning anything.
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JSFBOA
Save a life.
N = R* fp ne fl fi fc L
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03-09-2009, 10:01 AM
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#29
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10 Second Club; Has fan club
Join Date: Dec 2005
Location: Delmont nj
Posts: 4,369
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Quote:
Originally Posted by BonzoHansen
Depends on the comparison. Stock LS1 vs. Modded 5.3, I have heard 5.3s doing 400 crank hp.
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ok, so thats about the same as a bolt on LS1 @ the crank lol. and we all know he would do bolt ons to the 5.3 anyway.
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01' Z06 62k miles. Vararam, Longtubes, off road xpipe, tuned by me. Times TBA
2001 Corvette, Bolt ons , tuned 10.75@124.56 mph 1.38 60' Sold
1997 Saturn Sc1 5spd DOHC swapped
Bolt ons, decked head, stock intake cam on exhaust side, lotsa weight redux
13.22@102.32 mph 1.93 60'
12's on moda? One day
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03-09-2009, 11:26 AM
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#30
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,940
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What you should really do is swap in an LT1..... 
Same motor mounts as a SBC and much cooler than an LSX....
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-09-2009, 11:32 AM
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#31
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LSwhatever
Join Date: Nov 2007
Location: Belcamp, MD
Posts: 278
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427 LS1 stroker kit using and LS7 block and call it a day.
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-Felipe
2001 WS6: SDPC LS7 Shortblock, L92 heads upgraded for .600 lift,
L76 intake, Nick Williams TB, Comp Cams 224/228 .581/.588 114+2LSA,
1 7/8 LT's, GMMG
waiting for some boost
2003 Silverado 1500HD
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03-09-2009, 12:57 PM
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#32
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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__________________
1984 Firebird
2000 Z28
2023 Tacoma
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03-09-2009, 01:28 PM
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#33
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by WayFast84
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And what do you suppose your 400 puts down? I'd guess around that if not more.
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03-09-2009, 04:27 PM
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#34
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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Quote:
Originally Posted by WildBillyT
And what do you suppose your 400 puts down? I'd guess around that if not more.
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From what I know about the 400 it should be putting down about that much HP and definitely more tq than that....
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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03-09-2009, 04:56 PM
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#35
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NJFBOA Co-Founder
Join Date: Jul 2004
Location: All up in your kool aid!
Posts: 12,235
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The Gen1 SBC would definitely put down gobs more torque.
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03-09-2009, 06:05 PM
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#36
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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I'm fixing this motor for sure. I'm almost positive that means rebuilding the heads.. After I fix it. I'm going for a 12 bolt. THEN going for a real ls1 swap. Thanks for the help on this. I figure Ill need a 12 bolt anyway. And I can enjoy it with out that much down time left.
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1984 Firebird
2000 Z28
2023 Tacoma
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03-09-2009, 06:08 PM
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#37
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Didn't you just break a rocker stud?
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03-09-2009, 06:08 PM
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#38
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,940
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Why though?
Strong running 400 SBC > some puny ass LSX
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-09-2009, 06:09 PM
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#39
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Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,677
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__________________
John
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03-09-2009, 06:10 PM
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#40
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by Shownomercy
Why though?
Strong running 400 SBC > some puny ass LSX
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It's not even an LSX. It's a GEN III small block.
Last edited by WildBillyT; 03-09-2009 at 06:10 PM.
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03-09-2009, 06:11 PM
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#41
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Join Date: Dec 2005
Location: Mays Landing, NJ
Posts: 7,108
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Quote:
Originally Posted by Shownomercy
Strong running 400 SBC > some puny ass LSX
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O RLY? Show me a stock headed, stock cammed 400 in any street car running 11's with just bolt ons, 10's w/cam only. Isn't happening.
__________________
2018 Camaro 2SS Redline package, ESC Novi 1500 tuned by EFX, Might Mouse wild catch can, GM STB, smoked ZL1 3rd brake light, Xpel XR Black 35% tint all around, Street Scene front splitter, C7 Carbon ZL1 side skirts, Drake Muscle Car Wickerbill spoiler
2010 Infiniti G37x-Moonlight White w/Graphite interior. Stock...for now. Xpel XR Black tint(hey it's a mod lol)
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03-09-2009, 06:11 PM
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#42
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,940
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And bring on the lsx leg humpers....
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-09-2009, 06:12 PM
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#43
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by Frosty
O RLY? Show me a stock headed, stock cammed 400 in any street car running 11's with just bolt ons, 10's w/cam only. Isn't happening.
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WF's 400 does not have the stock heads or the stock cam.
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03-09-2009, 06:14 PM
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#44
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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Quote:
Originally Posted by WildBillyT
Didn't you just break a rocker stud?
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I broke a pushrod and a stud.
Could not machining a valve guide cause a broken pushrod?
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1984 Firebird
2000 Z28
2023 Tacoma
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03-09-2009, 06:15 PM
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#45
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by WayFast84
I broke a pushrod and a stud.
Could not machining a valve guide cause a broken pushrod?
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You snapped the pushrod or bent it?
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03-09-2009, 06:16 PM
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#46
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,940
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Bent PR = PTV oops
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-09-2009, 06:17 PM
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#47
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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Quote:
Originally Posted by WildBillyT
You snapped the pushrod or bent it?
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snapped.
Quote:
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Retainer to guide clearance is the primary Achille's Heel of the Vortec. For valve lifts above .460" they need to be checked for R-G clearance. This varies from head to head. Some find they can get .480" and slightly more valve lift fine. Others will find .460" about the limit. Always check R-G with any performance cam above .460".
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That's what I found about them. I have no clue about what it means, what mine is. my lift is .510
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1984 Firebird
2000 Z28
2023 Tacoma
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03-09-2009, 06:24 PM
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#48
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,940
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The valve spring retainer hitting the valve stem guide?
That sounds weird.
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-09-2009, 06:35 PM
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#49
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Join Date: Dec 2005
Location: Mays Landing, NJ
Posts: 7,108
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Quote:
Originally Posted by Shownomercy
And bring on the lsx leg humpers....
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I'm not a LSx leg-humper but you'd have to work an ancient 400 to even get stock LS1 power.
Quote:
Originally Posted by WildBillyT
WF's 400 does not have the stock heads or the stock cam.
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I know that, what he said made no sense. A "strong" running 400 would barely put down more power than a simple bolt on "puny" LSx.
__________________
2018 Camaro 2SS Redline package, ESC Novi 1500 tuned by EFX, Might Mouse wild catch can, GM STB, smoked ZL1 3rd brake light, Xpel XR Black 35% tint all around, Street Scene front splitter, C7 Carbon ZL1 side skirts, Drake Muscle Car Wickerbill spoiler
2010 Infiniti G37x-Moonlight White w/Graphite interior. Stock...for now. Xpel XR Black tint(hey it's a mod lol)
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03-09-2009, 08:22 PM
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#50
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by Frosty
I'm not a LSx leg-humper but you'd have to work an ancient 400 to even get stock LS1 power.
I know that, what he said made no sense. A "strong" running 400 would barely put down more power than a simple bolt on "puny" LSx.
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A 400 doesn't have to work that hard to do it. Modified, sure. But nothing too wild.
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