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  #1 (permalink)  
Old 01-04-2003, 06:28 PM
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Post chevy production 383

O;K guy`s and gal`s, I am going to ask a question that will hopefully clear up the opinon`s that have been placed on building a 383 stroker motor? here it is! I believe alot of you agree a 383 stroker is a very popular engine combo? So why is it chevy never placed this engine in production????? If any of you have thoughts on this please write it and please be nice and refrain from sarcastic statements about others comments! Thanks Ronb

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Old 01-04-2003, 06:35 PM
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Probably the same reason that GM never mass produced the V8 S-10...
My guess would be because of the 'smog/emissions' laws were getting stricter so they went to the V6's instead of concentrating on the V8 more.
Later,
WEIMER
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Old 01-04-2003, 07:59 PM
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Recently, I was given some S-10 Xtreme front spindles, I was told as well as read on the web this would lower the front end of a stock S-10 2 inches,, I knew better than that, I compared them, no difference. GM is too cheap to use dropped spindles when they can just use cut springs. this is my same feelings on the 383, through 73 and on, the horsepower wars were smoldering ruins, real performace cars didn`t come back until the LT1 was rereleased in the early 90`s. GM isn`t gonna spend any money on anything in there engineers eyes that isn`t a "good idea" and as already said, emissions requirements, federal laws and all the other red tape BS that goes along with it stands in the way. what we rodders love, GM don`t share the same view. just my 2 cents.
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Old 01-04-2003, 08:16 PM
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The reason why is called BIG BLOCK CHEVY.

No more need be said. Why have 383 cubes when you can have 454? What about the 400?

I don't think I get this question? <img src="confused.gif" border="0">
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Old 01-05-2003, 12:56 AM
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GM does produce a 383 check out the GM performance catalog it uses a 350 block with a standard 4.00 inch bore and uses a new crank with a 3.80 inch throw. If you mean production as in car then I don't know.

[ January 05, 2003: Message edited by: JoeyP ]</p>
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Old 01-05-2003, 01:52 AM
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i heard that some of them came in a camaro or something. its kinda weird because my dad got me some "383" emblems to put on my chevelle, they are stock looking and everything, obviously they could just be custom made but they are really hard to find. weird stuff.
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Old 01-05-2003, 02:13 AM
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Chrysler products had 383 big blocks in the 60's through early 70's that may be where the emblems came from. I really don't think Chevy thought that there was a void to fill. The 350 engine had been produced up to 370 h.p. and the 400 was a good family car, pickup engine. I know alot of people like the 383 (350 block, 400 crank) but, there would never have been a need to do this if the 400 block didn't have siamezed cylinders, that led to overheating problems in some race prepped engines. That being said, drop a 350 or 327 crank in a 400 block for a real high R.P.M. screamer!!
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Old 01-05-2003, 03:54 AM
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[QUOTE]Originally posted by JoeyP:
[QB]GM does produce a 383 check out the GM performance catalog it uses a 350 block

I was wondering when someone was going to bring this up? When I said production, I meant production vehicles(assembly Line) GM performance is a seperate Division! sorry for not clairifying that before!
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Old 01-05-2003, 04:05 AM
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[quote]Originally posted by 4 Jaw Chuck:
<strong>The reason why is called BIG BLOCK CHEVY.

No more need be said. Why have 383 cubes when you can have 454? What about the 400?

I don't think I get this question? </strong><hr></blockquote>

4 jaw Focusing on the subject of the 383 small blk being a popular combo for hotrodders for it`s awesome HP and torque #`s was neever mass produced as the other 454,502,400`s were. a 383 smblk is cabable of producing 500 hp! more than a match for the other production blocks?
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Old 01-05-2003, 04:08 AM
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The reason is any car that doesn't pass the gas milage requirements of our nosey govt. has to pay a gas guzzler tax and GM ain't gonna loss money to noone.
That and emmissions and tooling costs to clearance the 350 blocks and so on.Just wasn't worth it to them,they need to make trillions not just billions.lol
That be my 12pack of old milwuakee reasoning.
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Old 01-05-2003, 04:34 AM
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How long has anybody run one the street? , {Miles} a mild built 383 SBC with out a tear down?Some that i have seen have some problems with pistons and rods at 20000-30000 miles, This may be the quality of the parts used in the buildup?
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Old 01-05-2003, 04:39 AM
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Roys63 You are extremly close!
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Old 01-05-2003, 04:53 AM
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yeah yeah, 500 horses, ofcourse everything is possible, but its like saying that a 502 can make 1200 horses on pump gas just because a pro stock engine is based on a low deck bigblock and is limited to 500 cubes, pump gas and carbs.

I believe the 383 is popular because it produces more tourque than the run of the mill 350 and is cheap to build as people usually just replace the crank, rods and pistons when they need replacing anyway, and what better time to add a little more displacement.

I am certain that the reason why chevy never made the 350 block 400 crank combo which is what most people think of as a 383 is thet when Chevy engineers an engine its from the bottom up, and when they felt they needed to make a more tourquy small block engine they went the full distance and produced the 400 sb. The trade-off with the 400 was however a lousy rod/stroke ratio so if chevy was ever to have made a 383 on their own accord (and not just producing what the aftermarket wants) i think it would, and most certainly should, have been a 400 block with a 350 crank and longer rods.

[ January 05, 2003: Message edited by: deuce_454 ]</p>
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Old 01-05-2003, 07:21 AM
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Okay my two cents. As stated chevy made the 400 when they wanted more torque. To me a 383 is a pointless motor to build IF YOU HAVE A 400. BUT, people build them to duplicate the 400 since the 400's where only made for 5 years. They are getting hard to find and the 383 is a close replacement.

Chris
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Old 01-05-2003, 07:48 AM
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Like said above... 350s are a dime a dozen... that is why the combo is so popular... whereas with the 400s you get more cubes and you can go long rod... you can even get more cubes out of it but it is getting harder to find 400s... 383 would not have been that popular I don't think in a production car since most production cars don't have the power people want and that is why they hotrod...

why am I choosing to do a 400 instead of a 383 then????? well cuz everyone has a 383 and a 400 can be stroked later on... not to mention my next build will most certainly be a long rod build.. (trying to keep it simple for my first one)
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