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stroking a 383? #467474 09/13/09 11:09 PM 09/13/09 11:09 PM
Joined: Oct 2005 Posts: 797 arizona, usa L lokalik OP super stock
lokalik OP super stock L Joined: Oct 2005 Posts: 797 arizona, usa	who here has stroked a 383? wanting to do one. what issues or problems did you run into? whos kit did you use? thanks.

Re: stroking a 383? [Re: lokalik] #467475 09/13/09 11:52 PM 09/13/09 11:52 PM
Joined: Jul 2004 Posts: 3,811 Arlington, Texas B bobby66 master
bobby66 master B Joined: Jul 2004 Posts: 3,811 Arlington, Texas	I think there's a couple articles in the Tech Archives that should point you in the right direction.

Re: stroking a 383? [Re: lokalik] #467476 09/13/09 11:57 PM 09/13/09 11:57 PM
Joined: Jan 2003 Posts: 2,111 Bowie, MD R Reggie top fuel
Reggie top fuel R Joined: Jan 2003 Posts: 2,111 Bowie, MD	Member 70Cuda383 has done it.

Re: stroking a 383? [Re: Reggie] #467477 09/14/09 12:18 AM 09/14/09 12:18 AM
Joined: Jun 2006 Posts: 699 Cooperstown, NY jrlegacy23 mopar
jrlegacy23 mopar Joined: Jun 2006 Posts: 699 Cooperstown, NY	Already have the engine? If not, seek out a 400 to start with. Same main bearings/crank. Much bigger bore to start. Check out 440source.com, I have good luck with their product so far.... no comments needed, just leading him to an option. [color:"#00FF00"]68 Fastback Barracuda with some stuff[/color]

Re: stroking a 383? [Re: jrlegacy23] #467478 09/14/09 07:02 AM 09/14/09 07:02 AM
Joined: Aug 2003 Posts: 1,345 Rohnert Park, Ca R ryan053 pro stock
ryan053 pro stock R Joined: Aug 2003 Posts: 1,345 Rohnert Park, Ca	I stroked my 383 to 434. I originally got a kit from muscle motors. I highly recommend getting a kit from somewhere else. I had to get 3 crankshafts from them before i got one that was acceptable. They also sent me the wrong pistons. I ended up going with a crank from 440 source. I recommend them. The crankshaft was perfect. If you have any other questions fire away. I had no other problems with my build other then the crappy crankshafts.

Re: stroking a 383? [Re: lokalik] #467479 09/14/09 09:28 AM 09/14/09 09:28 AM
Joined: Aug 2003 Posts: 8,716 Baltimore/Denver 64Post master
64Post master Joined: Aug 2003 Posts: 8,716 Baltimore/Denver	383/451 here. 3.910 crank, 6.7 Chevy rods, and custom Diamond pistons. About 560 HP/585TQ with small 1 3/4" headers and needing additional tuning.

Re: stroking a 383? [Re: 64Post] #467480 09/14/09 09:41 PM 09/14/09 09:41 PM
Joined: Oct 2005 Posts: 797 arizona, usa L lokalik OP super stock
lokalik OP super stock L Joined: Oct 2005 Posts: 797 arizona, usa	thanks guys. yeah i already have the motor. i'm going to pull it this winter to fix a rearmain leak. the motor is zero deck(.005 below) stock crank and rods with kb162. being zero deck already does that have a negative effect on the stroke. i will call 440 source later. i'm looking for some insight/ experience outside of a supplier. would like to use the same block, intake and heads cut to already. only one season on it so bore clean up should be easy.

Re: stroking a 383? [Re: lokalik] #467481 09/14/09 10:10 PM 09/14/09 10:10 PM
Joined: Jan 2007 Posts: 1,668 Mi,U.S.A. M mike s top fuel
mike s top fuel M Joined: Jan 2007 Posts: 1,668 Mi,U.S.A.	I am building a 431 right now as a street motor. Cut down 440 steel crank with ly rods (6.76)and Ross pistons.Bobweight is 220 grams heavier than my 440 Source kit 470 kit but still very light.Depending on your choice of con rods some builds will needs oil ring support rails for the piston oil ring.Deck height should be ok as long as it isn't less than 9.980. Build it Leave the gun.......take the Cannoli's....Mike

Re: stroking a 383? [Re: mike s] #467482 09/14/09 10:33 PM 09/14/09 10:33 PM
Joined: Jan 2004 Posts: 5,476 3 340dart4spd Parts Problem
340dart4spd Parts Problem 3 Joined: Jan 2004 Posts: 5,476	here is the just of mine.. changed a few things.. http://www.rpmmachine.com/383-484-chrysler-stroker.shtml

Re: stroking a 383? [Re: lokalik] #467483 09/14/09 10:56 PM 09/14/09 10:56 PM
Joined: Jan 2003 Posts: 75,043 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,043 U.S.S.A.	Quote: thanks guys. yeah i already have the motor. i'm going to pull it this winter to fix a rearmain leak. the motor is zero deck(.005 below) stock crank and rods with kb162. being zero deck already does that have a negative effect on the stroke. i will call 440 source later. i'm looking for some insight/ experience outside of a supplier. would like to use the same block, intake and heads cut to already. only one season on it so bore clean up should be easy. Well is it zero deck or .005 in the hole ? That KB piston , which sucks , is .024 in the hole on a factory spec block so you either have .019 cut off the block or .024, Which is it ? You should be able to use a shelf stock piston for that build and be ok with what you have depending on the head choice .

Re: stroking a 383? [Re: JohnRR] #467484 09/15/09 12:14 AM 09/15/09 12:14 AM
Joined: Oct 2005 Posts: 797 arizona, usa L lokalik OP super stock
lokalik OP super stock L Joined: Oct 2005 Posts: 797 arizona, usa	it's .005 i just say zero because thats easier. i used the kbs with 452 heads. later changed to eddy performer closed chamber, cut the heads to get my cr up. thats why i want to use the same block, heads and intake. 440 source list it at .025 in the hole, i guess thats on a stock/uncut block. thinking i will end up about the same as now so maybe my cr and piston to valve will not change. Last edited by lokalik; 09/15/09 12:15 AM.

Re: stroking a 383? [Re: lokalik] #467485 09/15/09 08:39 AM 09/15/09 08:39 AM
Joined: Jan 2003 Posts: 75,043 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,043 U.S.S.A.	Quote: it's .005 i just say zero because thats easier. i used the kbs with 452 heads. later changed to eddy performer closed chamber, cut the heads to get my cr up. thats why i want to use the same block, heads and intake. 440 source list it at .025 in the hole, i guess thats on a stock/uncut block. thinking i will end up about the same as now so maybe my cr and piston to valve will not change. Sounds like you have it figured out , I'm building a 383 based stroker also , 3.9 stroke , 1.32 ch piston with a 6.700 rod . What size overbore is your block at ? What rod are you planning on using ?

Re: stroking a 383? [Re: mike s] #467486 09/15/09 12:57 PM 09/15/09 12:57 PM
Joined: Jan 2003 Posts: 5,138 East Aurora (Buffalo) NY RoadRunner master
RoadRunner master Joined: Jan 2003 Posts: 5,138 East Aurora (Buffalo) NY	Quote: I am building a 431 right now as a street motor. Cut down 440 steel crank with ly rods (6.76)and Ross pistons.Bobweight is 220 grams heavier than my 440 Source kit 470 kit but still very light.Depending on your choice of con rods some builds will needs oil ring support rails for the piston oil ring.Deck height should be ok as long as it isn't less than 9.980. Build it Which Ross pistons? Where did you get them from? I am collecting parts for a 383/432 build, but don't have pistons yet. 68 Road Runner (383/4speed, post car w/decor pkg) - Major Project 69 Road Runner w/472 Hemi & 4 speed. 70 Challenger R/T SE EF8 w/ V9J, U - A32 - Major Project 2023 Ford Mach 1

Re: stroking a 383? [Re: lokalik] #467487 09/15/09 01:04 PM 09/15/09 01:04 PM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Quote: it's .005 i just say zero because thats easier. i used the kbs with 452 heads. later changed to eddy performer closed chamber, cut the heads to get my cr up. thats why i want to use the same block, heads and intake. 440 source list it at .025 in the hole, i guess thats on a stock/uncut block. thinking i will end up about the same as now so maybe my cr and piston to valve will not change. Unless you go with a dished piston with the stroker kit, the extra stroke will cause your compression ratio to go up.

Re: stroking a 383? [Re: DaytonaTurbo] #467488 09/15/09 10:26 PM 09/15/09 10:26 PM
Joined: Oct 2005 Posts: 797 arizona, usa L lokalik OP super stock
lokalik OP super stock L Joined: Oct 2005 Posts: 797 arizona, usa	the block is .030 over. looking at 440 source if i go with them the rods are part of the kit. do you think my cr will be over 11-1? is that static or dynamic? i can live with 11-1 with alum heads.

Re: stroking a 383? [Re: DaytonaTurbo] #467489 09/15/09 10:31 PM 09/15/09 10:31 PM
Joined: Jan 2003 Posts: 75,043 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,043 U.S.S.A.	Quote: Quote: it's .005 i just say zero because thats easier. i used the kbs with 452 heads. later changed to eddy performer closed chamber, cut the heads to get my cr up. thats why i want to use the same block, heads and intake. 440 source list it at .025 in the hole, i guess thats on a stock/uncut block. thinking i will end up about the same as now so maybe my cr and piston to valve will not change. Unless you go with a dished piston with the stroker kit, the extra stroke will cause your compression ratio to go up. that depends on the stroke , to get the compression I needed with a 4.280 bore and a 3.9 stroke crank I had to put a 12 cc DOME on the piston . A flat top is only good for about 10.7 .

Re: stroking a 383? [Re: lokalik] #467490 09/16/09 01:06 AM 09/16/09 01:06 AM
Joined: Aug 2003 Posts: 8,716 Baltimore/Denver 64Post master
64Post master Joined: Aug 2003 Posts: 8,716 Baltimore/Denver	Quote: the block is .030 over. looking at 440 source if i go with them the rods are part of the kit. do you think my cr will be over 11-1? is that static or dynamic? i can live with 11-1 with alum heads. You need to plan a build and run the numbers before ordering parts. There are many online compression calculators out there. Here's one: http://kb-silvolite.com/calc.php?action=comp Here is another one if altitude needs to be considered which, in your case, does not. http://www.wallaceracing.com/dynamic-cr.php Compression results will be give as static, or you can solve for dynamic if you have the cam specs. When deciding on a cam try to get the "intake closing point" number @ .006" instead of .050."; The smaller number is more accurate. If you're using the KB calculator do not add 15� to the closing point if you have the ".006" number. Building quench is very important. I ended up with 10 cc domes and 82 cc heads to get a CR of 12.2, but I'm at 5300 ft. Last edited by 64Post; 09/16/09 01:07 AM.

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