383 = no love

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383 no love?
back in the day i remember stock 383 road runners, like 396,325 hp Chevelles to be a bit lazy at lo 15's so they have that reputation...but today anything can be made fast.
 
ir3333 said:
383 no love?
back in the day i remember stock 383 road runners, like 396,325 hp Chevelles to be a bit lazy at lo 15's so they have that reputation...but today anything can be made fast.
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I agree that today anything can be made fast. Unless it was in the high country, I would be shocked at a 383 RR not being able to get into the 14's (unless it had major traction issues). My 1st post showed a heavier C-body with taller tires (15") going 15.17 and that was with the "run of the mill" 3.23 gears that would have been a standard gear on the RR.
 
No need to worry about any 396's...if ya' build ya' Mopar right:D:D
 
a lot of those 383 roadrunners were just driven by teenagers as delivered..in poor tune.
A 383 with its' big piston / short stroke needs to rev to make good power in a heavy B body
...Good tuning and timing with gears usually woke them up.I remember a white RR in '68 that was stock with slicks and 4.10's running in the high 13's at our local strip which was fast back then.
 
stroked340 said:
You'd know me if ya lined up next to me you'd be seeing nothing but the taillights of my duster all the way down the track:D:D
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Really? I'm surprised. I didn't know you could push a car that fast!

Well I guess I shouldn't be. You probably got lots of experience pushing that thing around! lol
 
No love for a 383.......well, in stock trip there both a big bore short stroke eng. they both need to rev to be happy.........I would take the 340 over the 383.......but then i'm a Small Block Man:steering::D
 
Cudafever said:
No love for a 383.......well, in stock trip there both a big bore short stroke eng. they both need to rev to be happy.........I would take the 340 over the 383.......but then i'm a Small Block Man:steering::D
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0 - 90 mph agree, depending on gear, your right. But but big boy motors dont start producing power till that small block ready to blow...lol
Merry Christmas!
 
You'd know me too. I'd be the one who didn't give a darn.

stroked340 said:
You'd know me if ya lined up next to me you'd be seeing nothing but the taillights of my duster all the way down the track:D:D
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Just cause an engine has a short stroke and big bore doesn't mean it has to rev to make power. Look at the shoot out 383 Chev vs mopar. They both produced similar power curves at same powerbands cause it the size that matters not the stroke. But saying that a 383 mopar does has advantage over 383 Chev cause it has more rpm potential (hp) cause of big bore/short stroke but if you don't plan on taking advantage (turning it over 7000 rpm) of it then there both the same.
 
If i remember correctly they changed an intake,cam and carb on that mopar and gained about 150hp..the magazines can do that but you and i can't.
That mopar might have been tweaked a little.(or lots)
 
RustyRatRod said:
Ok, Mr "don't know what intermediate shaft to use so I blew up my own 340"

dumbass.
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Really..well being as your the so-called EXPERT what would be the best shaft to use??..there isn't one problem was NOT the shaft problem was a piece of metal got in to the oil pump seizing it in turn snapping the shaft(any shaft)..by the way it wasn't a 340:rolleyes::rolleyes::rolleyes:
 
stroked340 said:
Really..well being as your the so-called EXPERT what would be the best shaft to use??..there isn't one problem was NOT the shaft problem was a piece of metal got in to the oil pump seizing it in turn snapping the shaft(any shaft)..by the way it wasn't a 340:rolleyes::rolleyes::rolleyes:
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Who said all that? You'll never see me say I am an expert. Although, I do know which intermediate shaft to use with which oil pump.
 
In stock stroke form I'l take a 383 over the 440 any day! If your talking stroked? I'll take a 400 block over a 440 any day also!
 
I just had a 383 rebuilt and needed an intermediate shaft.
I bought what is supposed to be a Melling IS63 intermediate shaft.
Is there some secret to getting the correct shaft?
Are B motors and RB motor pumps different?
I can look at it while the intake is off. Do I need to run a depth gauge down in the hole to see were the bottom of the intermediate shaft would stop in the pump or something?
 
273 said:
Just cause an engine has a short stroke and big bore doesn't mean it has to rev to make power.
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Correct! Spot on!!
The 383 has a little more stroke, a lot more bore than a 340. It also came with better flowing heads in my opinion. Low end torque is not a problem with a properly tuned 383 commando, yes, even stock.
 
adriver said:
I just had a 383 rebuilt and needed an intermediate shaft.
I bought what is supposed to be a Melling IS63 intermediate shaft.
Is there some secret to getting the correct shaft?
Are B motors and RB motor pumps different?
I can look at it while the intake is off. Do I need to run a depth gauge down in the hole to see were the bottom of the intermediate shaft would stop in the pump or something?
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No B and RB use the same Oil Pump drive. The difference is in the deck height. When you slide the OP drive down in the hole , you may need to rotate the crank to get the hex on the drive to line up with the hex on the oil pump.
 
ir3333 said:
If i remember correctly they changed an intake,cam and carb on that mopar and gained about 150hp..the magazines can do that but you and i can't.
That mopar might have been tweaked a little.(or lots)
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We've had this debate before. The 383 Chev was a create engine from one of their sponsors, and yes the shootout was probably thought up to show off the create engine but saying that if they were gonna give advantage to anything it would of been the Chev not Dodge.

Also intake cam and headers can add a lot to a low performance engine since there 3 of the 5 main things to make power the others being cr and heads. There's some engines builds on here have proved that.

Think of it this way a stock long block (heads/cr) has a certain potential hidden away. With the right cam carb intake and headers will realize that and if you could change cr for even more cam and with the right parts for the rest of the combo you could get even more.
Thus leaving heads as the limiting factor for more power.

And you missed the main thing of that shoot out is that the powerband is not overly dictated by bore stroke ratio but by mainly Cid.

Yes longer stroke has more multiplying power. But bigger bore has more surface area with more pressure per square inch so needing less leverage (shorter stroke ) to come out with similar torque and power curves.
 
i run the pants off this hp 383 came from a 69 rr , i pulled it from rolled over 67 polara 500 in the boneyard , i stuff it in a 69 dart gt , and wrecked it . now its in a 64 d100 . whats next , lol !

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273 said:
Yes longer stroke has more multiplying power. But bigger bore has more surface area with more pressure per square inch so needing less leverage (shorter stroke ) to come out with similar torque and power curves.
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And compared to the 340, the 383 has both a bigger bore and stroke.

There's no substitute for cubic inches. I don't care how great the "legend" is.
 
I agree wih RRR. Not because hes my mentor but because he knows what hes talkin about.
And to some extent, so do I.....
 
...i wonder how a 340 with a 3.79 stroke would stack up to a stock .060 over 383 with similar flowing heads and the same cam and carb.Both would be about 389 cu. in.
the 340 would be 4.04 bore x 3.79 stroke and the 383 would be 4.25 bore x 3.38
stroke?
 
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