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Build me a 383
#1166373
01/27/12 11:03 PM
01/27/12 11:03 PM
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Joined: Nov 2005
Posts: 15,119
85086
moparpollack
OP
Lil Herman
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OP
Lil Herman
Joined: Nov 2005
Posts: 15,119
85086
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What are the closest to stock pistons available for a 383 roadrunner engine. What's a good cam for a stockish build? 
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: Build me a 383
[Re: savoy64]
#1166376
01/28/12 01:44 AM
01/28/12 01:44 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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never realized the stock pistons were THAT tall...1.9"?! I'm thinking the custom stroker pistons in my 383 are around 1.3" and that's with a 440 stroke, 440 rod, and custom piston. i.e. "440 wrapped up in a 383 block"
can you get away with using the longer 440 rods on the stock stroke 383 and get a shorter piston?
again, I don't know what all is available off the shelf.
**Photobucket sucks**
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Re: Build me a 383
[Re: superbeedave]
#1166379
01/28/12 11:31 AM
01/28/12 11:31 AM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,070
U.S.S.A.
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Quote:
I had my 383 done a few years ago and did alot of measuring. Checked it out on a micro-hite at work. And yes they are 1.932 comp. hgt. Don't you have to notch the block if you use the 440 rods so they clear? I thought I heard that somewhere!
No, you don't have to notch the block. A piston for use with the 440 rod would be a custom , nothing is available in that height which would be 1.522 to put the piston back at the same spot, .0025 in the hole .
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Re: Build me a 383
[Re: JohnRR]
#1166380
01/28/12 03:31 PM
01/28/12 03:31 PM
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Joined: Jul 2003
Posts: 1,212
Canton, Ohio
Crazy68Dart
pro stock
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pro stock
Joined: Jul 2003
Posts: 1,212
Canton, Ohio
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Quote:
Quote:
I had my 383 done a few years ago and did alot of measuring. Checked it out on a micro-hite at work. And yes they are 1.932 comp. hgt. Don't you have to notch the block if you use the 440 rods so they clear? I thought I heard that somewhere!
No, you don't have to notch the block. A piston for use with the 440 rod would be a custom , nothing is available in that height which would be 1.522 to put the piston back at the same spot, .0025 in the hole .
I've been wondering about this myself:
Check my math...
9.98-(3.375/2) = 8.2925 - 6.768 = 1.5245 CH
Use a BB Chevy "489 short rod" piston:
JE-139506
489
Bore: 4.280 ( )
Stroke: 4.250
Rod: 6.135
Deck: 9.780
CH: 1.520 ()
Dome: -3cc
Pin: .990
What am I missing?
383, Hemi 4-Speed, AlterKtion, D60
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Re: Build me a 383
[Re: JohnRR]
#1166382
01/28/12 04:28 PM
01/28/12 04:28 PM
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Joined: Jul 2003
Posts: 1,212
Canton, Ohio
Crazy68Dart
pro stock
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pro stock
Joined: Jul 2003
Posts: 1,212
Canton, Ohio
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Quote:
Quote:
What am I missing?
The valve reliefs are even close to being in the same place because the BBC has canted valves . But you could cut new valve reliefs .
It wouldn't be a total custom , pick a piston that diamond makes for a BB mopar , for a small upcharge you can change 2 things , pin location and piston size ...
Thanks, figured I was missing something obvious.
383, Hemi 4-Speed, AlterKtion, D60
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Re: Build me a 383
[Re: JohnRR]
#1166383
01/28/12 04:52 PM
01/28/12 04:52 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
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Re: Build me a 383
[Re: Mr.Yuck]
#1166384
01/28/12 05:07 PM
01/28/12 05:07 PM
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Joined: Jul 2005
Posts: 11,632
SHELBY TWP,,MICHIGAN
72N96RR
I LOVE WEDGIES
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I LOVE WEDGIES
Joined: Jul 2005
Posts: 11,632
SHELBY TWP,,MICHIGAN
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Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Then start it up and continue to get spanked by a 400 block with 440 crank.... 
1972 Road Runner / GTX 440 4spd Dana 3.54 Just about to turn 26K original miles..
A boat, a GMC truck, some Craftsman Tools, LOTS of Zombie Protection, and a few Goldfish..
If you love someone set them free..
If they come back it means nobody else wanted them either..!!
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Re: Build me a 383
[Re: 72N96RR]
#1166385
01/28/12 05:38 PM
01/28/12 05:38 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Then start it up and continue to get spanked by a 400 block with 440 crank....
if he was looking for performance he'd just go get a 440 and be done.
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Re: Build me a 383
[Re: Mr.Yuck]
#1166386
01/28/12 09:06 PM
01/28/12 09:06 PM
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Joined: Nov 2005
Posts: 15,119
85086
moparpollack
OP
Lil Herman
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OP
Lil Herman
Joined: Nov 2005
Posts: 15,119
85086
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Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Thanks for the replies. This is a numbers matching block and probably the last time it will be rebuilt so I want to do it right. Also I heard that most rocker arms are not rated correctly and a factory 1.5 is like a 1.3. So if I'm milling the block and heads will I need adjustable rocker arms too?
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: Build me a 383
[Re: moparpollack]
#1166387
01/28/12 09:16 PM
01/28/12 09:16 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Thanks for the replies. This is a numbers matching block and probably the last time it will be rebuilt so I want to do it right. Also I heard that most rocker arms are not rated correctly and a factory 1.5 is like a 1.3. So if I'm milling the block and heads will I need adjustable rocker arms too?
if you do just get a set of the old Ductile rockers, you;ll be fine.
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Re: Build me a 383
[Re: Mr.Yuck]
#1166388
01/28/12 09:29 PM
01/28/12 09:29 PM
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Joined: Jul 2005
Posts: 11,632
SHELBY TWP,,MICHIGAN
72N96RR
I LOVE WEDGIES
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I LOVE WEDGIES
Joined: Jul 2005
Posts: 11,632
SHELBY TWP,,MICHIGAN
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Quote:
Quote:
Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Then start it up and continue to get spanked by a 400 block with 440 crank....
if he was looking for performance he'd just go get a 440 and be done.
And then he would continue to be spanked by the 400/440 crank setup.. 
1972 Road Runner / GTX 440 4spd Dana 3.54 Just about to turn 26K original miles..
A boat, a GMC truck, some Craftsman Tools, LOTS of Zombie Protection, and a few Goldfish..
If you love someone set them free..
If they come back it means nobody else wanted them either..!!
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Re: Build me a 383
[Re: 72N96RR]
#1166389
01/28/12 09:39 PM
01/28/12 09:39 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
Quote:
Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Then start it up and continue to get spanked by a 400 block with 440 crank....
if he was looking for performance he'd just go get a 440 and be done.
And then he would continue to be spanked by the 400/440 crank setup..
 sure
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Re: Build me a 383
[Re: Mr.Yuck]
#1166390
01/29/12 12:20 AM
01/29/12 12:20 AM
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Joined: Nov 2009
Posts: 2,275
Desert Tracker
HYPER8oSoNic
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,275
Desert Tracker
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Quote:
Quote:
Quote:
Quote:
Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Then start it up and continue to get spanked by a 400 block with 440 crank....
if he was looking for performance he'd just go get a 440 and be done.
And then he would continue to be spanked by the 400/440 crank setup..
sure
To really spank EITHER setup, just RUN with the stock stroke setup an give it a quality build. When it's set up right, you will "see" the
"torque party" fade away.  
"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
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Re: Build me a 383
[Re: Mr.Yuck]
#1166391
01/29/12 01:03 AM
01/29/12 01:03 AM
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Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn
pro stock
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pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Quote:
Quote:
Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Thanks for the replies. This is a numbers matching block and probably the last time it will be rebuilt so I want to do it right. Also I heard that most rocker arms are not rated correctly and a factory 1.5 is like a 1.3. So if I'm milling the block and heads will I need adjustable rocker arms too?
if you do just get a set of the old Ductile rockers, you;ll be fine.
When I talked to Gary at RAS he told me the Ductile rocker arms are not a true 1.5:1 either. He said they can be corrected but it costs a lot and it's not usually worth it on a typical street/strip motor. The latest Mopar Action has a nice article on the virtues of stamped steel rocker arms. Just get the hardened shafts and stick with the stockers; no need to go crazy with the aftermarket on this build.
Also, consider going with a Mr. 6Pack camshaft. There's correction factors ground into the cam to make up for the lack of a true 1.5:1 rocker arm.
Take the time, do it right, now see what the underdog 383 will really do... 
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Re: Build me a 383
[Re: CompSyn]
#1166392
01/29/12 02:33 AM
01/29/12 02:33 AM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,070
U.S.S.A.
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Quote:
Quote:
Quote:
Quote:
JohnRR is the 383 king... do what he says.
If you are just looking for a nice street ride, deck the block, grab a set of cast pistons, mill the heads a tad, add a cheap summit 488 cam, DP4B intake, Holley 750 vacuum, headers and roll.
Thanks for the replies. This is a numbers matching block and probably the last time it will be rebuilt so I want to do it right. Also I heard that most rocker arms are not rated correctly and a factory 1.5 is like a 1.3. So if I'm milling the block and heads will I need adjustable rocker arms too?
if you do just get a set of the old Ductile rockers, you;ll be fine.
When I talked to Gary at RAS he told me the Ductile rocker arms are not a true 1.5:1 either. He said they can be corrected but it costs a lot and it's not usually worth it on a typical street/strip motor. The latest Mopar Action has a nice article on the virtues of stamped steel rocker arms. Just get the hardened shafts and stick with the stockers; no need to go crazy with the aftermarket on this build.
Also, consider going with a Mr. 6Pack camshaft. There's correction factors ground into the cam to make up for the lack of a true 1.5:1 rocker arm.
Take the time, do it right, now see what the underdog 383 will really do...
What he said, I purchased a set of these corrected ductiles off another member , cheaper than buying a set and having it done , though I have another set of them that may get done on my dime .
Blueberry boy , if you cut the block and the heads all you really need to do is measure what your new pushrod length will be have a set made , or get adjustables and set preload on each one making up for variances in valve stem height. either way it's spendy , but doing a 383 the correct is spendy.
As far as getting spanked by 440's or 400/440 combos , what's your point? there will always be someone FASTER no matter what you build.
The only person that has to be happy with whatever is being built is the person spending the money , who gives a bleep what someone else thinks about it ...
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