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04-22-2006, 09:29 AM
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#1
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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looking for chevy 400ci 2 bolt
like the title says im looking for chevy 400ci 2 bolt main.
matt
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1984 Firebird
2000 Z28
2023 Tacoma
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04-22-2006, 01:49 PM
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#2
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Join Date: Feb 2006
Posts: 1,385
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have a 400 - .030 4 bolt with as with most stock 400 blocks ( small crack in center head bolt thread ) every one we ever raced did this, it is also 1/2 filled with hard block its still useable not junk if you know anybody needs will let go cheep as we have been going away from small blocks jz
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04-22-2006, 03:08 PM
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#3
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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2 bolt only.
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1984 Firebird
2000 Z28
2023 Tacoma
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04-22-2006, 04:07 PM
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#4
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15 Second Club
Join Date: Aug 2005
Location: Beaufort SC
Posts: 1,165
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how much u got?
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2005 Colorado Z71 - Supermod tuned, SuperSparkz, Resonator delete, SuperMod PTB
next up - 3" lift, Gutted cat/retune/muffler
Past Toys:
1983 Trans AM, 1988 Trans AM, 2001 Dodge Ram 1500 Off-Road, 1986 Camaro IROC, 1984 Chevy K10 lifted, 1988 Mustang GT, 2006 Silverado 2500HD
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04-22-2006, 06:54 PM
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#5
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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nothing yet, but should have some soon thats why it says LOOKING.
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1984 Firebird
2000 Z28
2023 Tacoma
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04-22-2006, 08:34 PM
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#6
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Join Date: Sep 2004
Location: clifton, nj
Posts: 523
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no to be an ass but what are your plans now, are you set on building a certain motor of a change, whats up with the lg4
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92 mustang gt-ATI procharged
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04-23-2006, 12:08 PM
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#7
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Join Date: Oct 2005
Location: Maple Shade, NJ
Posts: 681
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Youll never make enough power to need a 2 bolt block, why waste your time?
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'98 Trans Am - LQ4/M6
'88 GTA - 355HSR/auto
'92 Trans Am 'vert - Flower Pot
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04-23-2006, 12:52 PM
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#8
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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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prolly because it isn't a matter of power that breaks 400 4bolt blocks, it is a matter of a design flaw that lets many crack, even in stock form.
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04-23-2006, 01:31 PM
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#9
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Join Date: Oct 2005
Location: Maple Shade, NJ
Posts: 681
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Itll never even run, let alone run enough to crack. And the more power, the more prone to cracking its gonna be. Ive rarely ever seen a stock motor with cracked webbing.
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'98 Trans Am - LQ4/M6
'88 GTA - 355HSR/auto
'92 Trans Am 'vert - Flower Pot
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04-24-2006, 01:10 PM
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#10
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Join Date: Nov 2005
Location: North Jersey
Posts: 563
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so is a 400 2 bolt better then a 4 bolt? the 4 bolt were truck motors the car ones were 2 bolt?
whats this design flaw? i plan on doing a 400 block once i get a block...
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1990 IROC-z28 Convertible ... best et (15.9 @ 86.7)
1970 Chevelle ls5 ... best et (13.97 @ 101.3)
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04-24-2006, 02:47 PM
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#11
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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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because of the larger bore of the 400 SBC there is less material in the webbing around a few of the main caps. with a 2bolt there is plenty of material to get a strong grip, with a 4bolt the outer bolt holes don't have enough material around them to be as strong.
the issue can be resolved by installing splayed caps and doing som efill welding on the original holes, but that is more work and machine shop time, so most people jsut look for the 2bolt block.
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04-24-2006, 09:22 PM
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#12
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15 Second Club
Join Date: Aug 2005
Location: Beaufort SC
Posts: 1,165
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so tim ur saying the 400 motor i got for free is worth some dough? nice. btw Chevys "4 bolt" main is a joke, tis more of a hype then it is strength
__________________
2005 Colorado Z71 - Supermod tuned, SuperSparkz, Resonator delete, SuperMod PTB
next up - 3" lift, Gutted cat/retune/muffler
Past Toys:
1983 Trans AM, 1988 Trans AM, 2001 Dodge Ram 1500 Off-Road, 1986 Camaro IROC, 1984 Chevy K10 lifted, 1988 Mustang GT, 2006 Silverado 2500HD
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04-24-2006, 10:02 PM
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#13
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Banned Camp Director Emeritus
Join Date: Aug 2004
Location: Somerset County
Posts: 8,395
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wayfast, if I were in your position I would build up a 383 instead. You'll save some money going that route because you'd be buying a 350 block (very common) and you wouldnt have to worry about the block cracking as easily. that just my thoughts on the matter.
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Quote:
Originally Posted by baddest434
and 1 more smart ass answer by you and i'm going to reach into this monitor and grab you by the throat
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04-25-2006, 03:14 PM
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#14
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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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Quote:
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Originally Posted by 88ta5spd
so tim ur saying the 400 motor i got for free is worth some dough? nice. btw Chevys "4 bolt" main is a joke, tis more of a hype then it is strength
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2botl vs 4botl mains did mean something back in the day when jim-bob was grain balancing the crank by eye. with modern computer balancing and how far materials have advanced it really isn't as important as it used to be.
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04-25-2006, 06:44 PM
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#15
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15 Second Club
Join Date: Aug 2005
Location: Beaufort SC
Posts: 1,165
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ahhh ok thanx
__________________
2005 Colorado Z71 - Supermod tuned, SuperSparkz, Resonator delete, SuperMod PTB
next up - 3" lift, Gutted cat/retune/muffler
Past Toys:
1983 Trans AM, 1988 Trans AM, 2001 Dodge Ram 1500 Off-Road, 1986 Camaro IROC, 1984 Chevy K10 lifted, 1988 Mustang GT, 2006 Silverado 2500HD
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