Ok, here's the debate of the century: 383 or 400 chevy!! Cast your vote and reason - Page 11 - Hot Rod Forum : Hotrodders Bulletin Board
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View Poll Results: What's the better motor?
400 SBC 214 45.63%
383 SBC 160 34.12%
Bore your 383, get a 388 22 4.69%
They're equally good street motors 73 15.57%
Voters: 469. You may not vote on this poll

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  #151 (permalink)  
Old 08-16-2004, 11:44 PM
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Guys I believe this Rob Keller about his 40 no 27 no... 32 mpg 400 ci 36 inch tired 4x4 Suburban! He's from Florida! they have hurricanes! Good ol Charley was pushing him with a 145 mph wind! Simple!

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  #152 (permalink)  
Old 08-17-2004, 12:33 AM
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you got that right

Hey ktaves1971 its nice someone is still lookin at this debate but if you realy look close we are the only ones to be here in two months!!! ,what kind of ride do you have,or are you into?this is a pretty cool site .I have learned a lot here,well dinners on the rollaway I must go ROCK ON
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  #153 (permalink)  
Old 08-17-2004, 10:21 AM
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I had a 400 sbc bored .60 over...built..from the crank up to the carb,never ran hot...it actually ran cooler than any other engine I ever had,and didnt ever use any oil either! ALOT OF TORQUE TOO!!!! ...i'll go with a 400sbc anytime

Quote:
Originally posted by 2wld4u
a 383, 5.7 or 6" rod? a 400, a 5.7" rod or stock? just because its a 400 doesnt make it faster, or make more power, and why in the world would you build a 383 like a 400 or vice versa, a 383 can easily out run a 400 and also vice versa, there are many, variables, so I say build whatever you have, Im a big fan of the 400SBC and the 350 stroker 383, the actual HP difference between the 2 built the same is relatively small...add headers to the 383 and they would be about the same...soooo, whatever....you guy's think, but I have experiance with these also...

add more gear/converter to the 383= bye by 400

its how you build these motors that make the difference...the 383 can make serious torque as well, its just your preferance and if you race there is no replacement for displacement...on the street well, sometimes thats in question...

gas mileage, VE all play a role in selection, if your head optons are limmited you could build a better breathing 383 over a 400, the 400 is seriously undervalved and if and when its true potential is reached these motors are totaly big block eating monsters...

so flip a damn coin and be happy with your choice...

2wld4u








victor jr. intake,aluminum victor jr. heads, ..good forged bottom end,alotta fuel....400 will win !!!! ha

Last edited by KWStewart; 08-17-2004 at 10:21 AM.
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  #154 (permalink)  
Old 09-30-2004, 05:45 PM
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First off I run a blown 406 in my street car so I would pick the 400 every time over a 383 but,I think I might have the final answer to this. A 10000 dollar 383 will out perform a 500 dollar 400, but a 5000 dollar 383 will not out perform a 5000 dollar 400. Its just like racing cars 98% of the time the guy with the most cash will win.
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  #155 (permalink)  
Old 09-30-2004, 08:18 PM
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Quote:
Originally posted by KWStewart
I had a 400 sbc bored .60 over...built..from the crank up to the carb,never ran hot...it actually ran cooler than any other engine I ever had,and didnt ever use any oil either! ALOT OF TORQUE TOO!!!! ...i'll go with a 400sbc anytime











victor jr. intake,aluminum victor jr. heads, ..good forged bottom end,alotta fuel....400 will win !!!! ha


Maybe, but if I were going to spend all that cash on the bottom and top end I would build a 421 not a 406, or the same with a 383 kit, it would be a 6" rod 391 and a 391 is what Id build anyday over a 406, and the same with a 421 over a 391 so if your talking just a 406 and just a 383, with quality parts I wouldnt really build either...


2wld4u

Quote:
Originally posted by Blown79
First off I run a blown 406 in my street car so I would pick the 400 every time over a 383 but,I think I might have the final answer to this. A 10000 dollar 383 will out perform a 500 dollar 400, but a 5000 dollar 383 will not out perform a 5000 dollar 400. Its just like racing cars 98% of the time the guy with the most cash will win.
most cases, but a savy engine builder can make the differance

look at nascar for example, build a 383 using SB2 take off's and spend the same with new parts for your 400, Im sorry to say but the savy 383 builder in this case would blow your doors off...
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  #156 (permalink)  
Old 10-01-2004, 01:14 AM
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....Hey blown 79, your just the guy I want to talk to! I've got a 415 small block. I'm going to put it in a '32 Ford and want to put a GMC supercharger on it. Some people tell me that I'll have Big time overheating problems. I had this same engine in a '84 Camaro {without the blower} and although it didn't overheat, it still didn't run cool. Also, in the Camaro I had a Ron Davis Nascar type radiator so that probably helped a little {oh also it has aluminum heads}. Do you think the fact that its bored out a little more than yours will matter that much? Thanks a bunch, Bill....

.....hummm, ya know something just dawned on me. If we're comparing 383's, 388's & 400's we are boring out the 383. Why can't we also bore out the 400? Some people are talking of putting LARGE sums of money into the 383's & saying that they would be better than a 400, no matter what. Well, if we putting a large sum of money into a 400 then boring it out to 415 is nothing money wise. So I say with a 415 having 32 more cubic inches than a 383 its impossible for the 383 to be a better motor {all other things being equal, of course}. hummm, but then when I say "better" I mean faster...... Bill....

Last edited by billsbird; 10-01-2004 at 01:14 AM.
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  #157 (permalink)  
Old 10-01-2004, 04:29 PM
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Geez this is a no brainer question. Just like the BBC VS SBC
There is no replacement for displacement.
a 383 and a 400 built with exact parts the 400 would make more power.
Now just like all motors if I built a $100 build compare to a $10,000 the You all know which one will make more power.
This is a stupid topic. You all know a 383 is a 400 with a smaller bore. whats the comparison. The #1 reaon why people dont build more 400 is because fo lack of blocks.
I dont have to machine my 400 to clear a 3.75 stroke.
hey while where here whats better a stroked out 400 or 350??
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  #158 (permalink)  
Old 10-01-2004, 04:55 PM
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Neither,I think we have reached the point that we need to exam the benefits of a 400 crank cut to fit a 305 block,and how much it will cost to build 800 hp on pump regular! Anybody?
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  #159 (permalink)  
Old 10-01-2004, 05:23 PM
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....or how 'bout putting the 400 crank in a 265 Small Block Chev??? .....
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  #160 (permalink)  
Old 10-01-2004, 05:33 PM
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Well,lets not get hasty and leave out the 262."
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  #161 (permalink)  
Old 10-01-2004, 06:32 PM
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Quote:
Originally posted by badazz81z28
Geez this is a no brainer question. Just like the BBC VS SBC
There is no replacement for displacement.
a 383 and a 400 built with exact parts the 400 would make more power.
Now just like all motors if I built a $100 build compare to a $10,000 the You all know which one will make more power.
This is a stupid topic. You all know a 383 is a 400 with a smaller bore. whats the comparison. The #1 reaon why people dont build more 400 is because fo lack of blocks.
I dont have to machine my 400 to clear a 3.75 stroke.
hey while where here whats better a stroked out 400 or 350??
Actually maybe you should go back and read the BBC vs SBC thread, turned out to be pretty interesting in the end. I love it when people who have no idea what they're talking about jump on a bandwagon with people who do.

K

BTW, if you look at the pole, with all the choices, less than 50% of the people who voted (who probably do know what they're talking about, btw) decided that the 400 was best! less than half! Considering that there really is only a few years of very good blocks and the siamesed cylinder walls, more than half of the people thought they'd feel more comfortable with a 383. The question was never "which one would make more power" learn to read.

Last edited by killerformula; 10-01-2004 at 06:39 PM.
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  #162 (permalink)  
Old 10-01-2004, 11:57 PM
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After all you have read,do you really believe that a 400 with heads that aren't crack prone,proper 400 head gaskets with the holes and 5.7 rods is a lesser foundation? Especially knowing the 502 offshore race boats share this design of cylinder? Most all 400s got a bad rap from the cracking heads,and it didn't help matters when the replacement heads received 350 gaskets because the parts store guy figured a small block is a small block when it came to gasket sets,I have been told this more than once and had to correct them,I can only imagine how many didnt catch the mix up. Thus the ever growing suspicions about the cylinders grew out of perportion,I have no doubt so many feel that way,uncomfortable,thing I find odd is nobody veiws a 350 as junk,and the ones from that era shared junk heads and such as well,I can only assume its because they had seen good ones and veiw them as a whole,unfourtunatly the 400 design was in the wrong place at the wrong time. Jimmy carter killed it and he to was voted for also as "the best." Years back you couldnt convince anyone that a 350 would be a better choise than a 327,funny how opinions change over time once they realize they arent chained to what the epa mandated.
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Old 10-02-2004, 01:31 AM
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Quote:
Originally posted by rifraf
After all you have read,do you really believe that a 400 with heads that aren't crack prone,proper 400 head gaskets with the holes and 5.7 rods is a lesser foundation? Especially knowing the 502 offshore race boats share this design of cylinder? Most all 400s got a bad rap from the cracking heads,and it didn't help matters when the replacement heads received 350 gaskets because the parts store guy figured a small block is a small block when it came to gasket sets,I have been told this more than once and had to correct them,I can only imagine how many didnt catch the mix up. Thus the ever growing suspicions about the cylinders grew out of perportion,I have no doubt so many feel that way,uncomfortable,thing I find odd is nobody veiws a 350 as junk,and the ones from that era shared junk heads and such as well,I can only assume its because they had seen good ones and veiw them as a whole,unfourtunatly the 400 design was in the wrong place at the wrong time. Jimmy carter killed it and he to was voted for also as "the best." Years back you couldnt convince anyone that a 350 would be a better choise than a 327,funny how opinions change over time once they realize they arent chained to what the epa mandated.
Nobody has said recently that the 400 is a "lesser" foundation. I simply stated that more than half of the people voted against it, erroneously or not! No flame intended, but I suggest you actually read earlier responses in this thread, many have already dispelled the myth. If you're going to post something on a thread that's 8 months and 11 pages of posts old... at least be sure what you're responding to!

K
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  #164 (permalink)  
Old 10-02-2004, 09:23 AM
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Quote:
Originally posted by killerformula
Actually maybe you should go back and read the BBC vs SBC thread, turned out to be pretty interesting in the end. I love it when people who have no idea what they're talking about jump on a bandwagon with people who do.

K

BTW, if you look at the pole, with all the choices, less than 50% of the people who voted (who probably do know what they're talking about, btw) decided that the 400 was best! less than half! Considering that there really is only a few years of very good blocks and the siamesed cylinder walls, more than half of the people thought they'd feel more comfortable with a 383. The question was never "which one would make more power" learn to read.
Hey killer what make a motor better than another? If its not power than I guess a the old 305 is the best foundation. Since it doesnt make any power it doesnt see alot of wear. You are the one who doesnt know crap with these stupid and pointless debates. Anyone who says a 400 sux is someone who has never had one. A 383 is a nice motor Im not saying that but god sakes a 383 is almost exactly identical in terms of internal parts.

Last edited by 4 Jaw Chuck; 10-06-2004 at 06:32 PM.
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Old 10-02-2004, 10:27 AM
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No doubt wise one,speaking of reading,how about going back to page 3 and 4 and re-analyzing your I know it all opinion before you go ranking others.
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