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408 stroker do's/donts #1361872 12/30/12 10:58 PM 12/30/12 10:58 PM
Joined: Jun 2004 Posts: 378 bc canada 6 67valiant OP enthusiast
67valiant OP enthusiast 6 Joined: Jun 2004 Posts: 378 bc canada	ok give me the low down on a 408 storkeri got the kits coming its a scat eagle crank forged piston 11.5-12.5 and good rods going with a 600 roller cam so what oiling mods should be done do i really need to 4 bolt main the block? not looking to make huge power just enough to get into the low 11 high 10 the kit comes balance and got a sfi balancer so i will send it out agian to get it re balanced so where do i start

Re: 408 stroker do's/donts [Re: 67valiant] #1361873 12/30/12 11:09 PM 12/30/12 11:09 PM
Joined: Jan 2003 Posts: 9,876 Weddington, N.C. Streetwize master
Streetwize master Joined: Jan 2003 Posts: 9,876 Weddington, N.C.	Plenty of great info already in the tech archive/best of Moparts. Huge detailed database. Set enough $$$ aside for good heads that will flow at least 270 by .550 lift, the more the better, otherwise the motor won't want to pull in the upper ranges. Don't overcam or run too loose a converter unless your combo is very light. Strokers love single plane intakes and big cfm carbs when you build them at or above the 10.75:1 range. Lots more will chime in , just want to get the thread rolling WIZE World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker! https://www.youtube.com/watch?v=-mWzLma3YGI In Car: https://www.youtube.com/watch?v=PjXcf95e6v0

Re: 408 stroker do's/donts [Re: 67valiant] #1361874 12/30/12 11:13 PM 12/30/12 11:13 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 master
emarine01 master E Joined: Jan 2007 Posts: 3,695 nc	No on the 4 bolt main, I went with studs & 2 bolt pro gram center caps, There was a good post on Moparts for small block oil mods a wile back, I think it was from a guy named Herb McCandless... not sure on the spelling...

Re: 408 stroker do's/donts [Re: emarine01] #1361875 12/31/12 01:02 AM 12/31/12 01:02 AM
Joined: Jun 2004 Posts: 378 bc canada 6 67valiant OP enthusiast
67valiant OP enthusiast 6 Joined: Jun 2004 Posts: 378 bc canada	thanks guy yup heads are ported iron with 2.08 in 1.60ex good valve job 2" headers car is light 2800 valint 3000 with me in it and getting lighter every day ladder bars 456 gears 5000 stall 727 cheata rev valve going to t brake next

Re: 408 stroker do's/donts [Re: 67valiant] #1361876 12/31/12 07:11 AM 12/31/12 07:11 AM
Joined: Aug 2006 Posts: 2,141 junction city oregon V viperblue72 top fuel
viperblue72 top fuel V Joined: Aug 2006 Posts: 2,141 junction city oregon	You're gonna run alot faster than your goal with that. .

Re: 408 stroker do's/donts [Re: 67valiant] #1361877 12/31/12 10:14 AM 12/31/12 10:14 AM
Joined: Jun 2010 Posts: 3,112 LONG ISLAND fishy340 master
fishy340 master Joined: Jun 2010 Posts: 3,112 LONG ISLAND	Here is a do(use a guy like Brian at imm) to order a rotating assembly for you...its way worth a very sm fee.It will be right.Hereb is a dont( be wary of claims by dealers in magazines hp claims w there cams) been there done that.

Re: 408 stroker do's/donts [Re: 67valiant] #1361878 12/31/12 11:13 AM 12/31/12 11:13 AM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: ok give me the low down on a 408 storkeri got the kits coming its a scat eagle crank forged piston 11.5-12.5 and good rods going with a 600 roller cam so what oiling mods should be done do i really need to 4 bolt main the block? not looking to make huge power just enough to get into the low 11 high 10 the kit comes balance and got a sfi balancer so i will send it out agian to get it re balanced so where do i start You might want to purchase "Big-Inch Mopar Small Blocks". by Jim Szilagyi. www.cartechbooks.com. Fastest 300

Re: 408 stroker do's/donts [Re: Crizila] #1361879 12/31/12 12:03 PM 12/31/12 12:03 PM
A Anonymous Unregistered
Anonymous Unregistered A	A high quality oil pan is a must--Charlies comes to mind--the deeper the better as the 408's can and do act like a blender with crank case oil--run as little oil as possible ( I just don't think you need 7 qts) run six or less. Some can hit a standard dipstick, be sure and check that during build. Vent valve covers well and keep breathers near the front for sure. A good one feels like a big block, you are going to have some fun! I agree with Wise, they likey some good heads--do not skimp on rocker arms--get some good ones.

Re: 408 stroker do's/donts [Re: ] #1361880 12/31/12 02:08 PM 12/31/12 02:08 PM
Joined: Jun 2004 Posts: 378 bc canada 6 67valiant OP enthusiast
67valiant OP enthusiast 6 Joined: Jun 2004 Posts: 378 bc canada	thanks guy and yup the book is on its way lol now what carb to run i run 1/8 up here but do go to the 1/4 at a different track but not to much

Re: 408 stroker do's/donts [Re: 67valiant] #1361881 12/31/12 02:21 PM 12/31/12 02:21 PM
Joined: Aug 2006 Posts: 2,141 junction city oregon V viperblue72 top fuel
viperblue72 top fuel V Joined: Aug 2006 Posts: 2,141 junction city oregon	I ran a 10.5 to 1 408 in 3150lb duster. With mild ported eddies and 248/577 roller 3k stall and 4.10s ran 11.20s@118. Put on indybrocks, and ran 2 passes only went 11.09@122 with bad 1.65 60ft. No oiling mods, but 7qt pan. Ran it to 6800 rpm all the time. Also carb I ran was proform 950. Intake was an m1 then a victor. You will be surprises how well it will probably run.

Re: 408 stroker do's/donts [Re: fishy340] #1361882 12/31/12 03:16 PM 12/31/12 03:16 PM
Joined: Aug 2005 Posts: 6,008 Salem Grizzly Moparts Proctologist
Grizzly Moparts Proctologist Joined: Aug 2005 Posts: 6,008 Salem	Quote: ( be wary of claims by dealers in magazines hp claims w there cams) been there done that. Very good advice, one magazine writer also comes to mind when you say this. Mo' Farts Moderated by "tbagger".

Re: 408 stroker do's/donts [Re: viperblue72] #1361883 12/31/12 03:26 PM 12/31/12 03:26 PM
Joined: Jan 2004 Posts: 13,247 Mt. Vernon, Ohio dartman366 I Live Here
dartman366 I Live Here Joined: Jan 2004 Posts: 13,247 Mt. Vernon, Ohio	Fun motor, mine is 13.0 to 1 comp and lg port Commando's .688int-.672ex roller set-up and Indy int w/1050 dommy,,5900stall,904, 4.56 dana,,,I twist it to 6800 at each shift and run's 10.00's to 9.90 all day long. 7526419-frontend,engineandstance009.JPG (384 downloads) Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.

Re: 408 stroker do's/donts [Re: 67valiant] #1361884 12/31/12 04:49 PM 12/31/12 04:49 PM
Joined: Oct 2003 Posts: 11,684 W. Kentucky justinp61 I Live Here
justinp61 I Live Here Joined: Oct 2003 Posts: 11,684 W. Kentucky	Measure everything twice amd take good notes as you go. Also I don't think it'll need 4.56 gears. My street/strip Dart is 3260# with me in it, 408, 10.9-1 with a flat solid cam and ported edlebrocks runs high 6.50 in good air and high 6.60s in street trim in the heat with 4.10 gears and a 28" tall radial.

Re: 408 stroker do's/donts [Re: justinp61] #1361885 12/31/12 04:58 PM 12/31/12 04:58 PM
Joined: Jan 2003 Posts: 9,876 Weddington, N.C. Streetwize master
Streetwize master Joined: Jan 2003 Posts: 9,876 Weddington, N.C.	Justin, What converter are you running with your combo? WIZE World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker! https://www.youtube.com/watch?v=-mWzLma3YGI In Car: https://www.youtube.com/watch?v=PjXcf95e6v0

Re: 408 stroker do's/donts [Re: Streetwize] #1361886 12/31/12 05:55 PM 12/31/12 05:55 PM
Joined: Oct 2003 Posts: 11,684 W. Kentucky justinp61 I Live Here
justinp61 I Live Here Joined: Oct 2003 Posts: 11,684 W. Kentucky	Quote: Justin, What converter are you running with your combo? Its a Edge Racing 9.5" that flashes 5000. I've been 1.38 60' but usually goes 1.40-1 on radials.

Re: 408 stroker do's/donts [Re: justinp61] #1361887 12/31/12 06:40 PM 12/31/12 06:40 PM
Joined: Jul 2009 Posts: 413 Norway (old world) Oyvind Mopar mopar
Oyvind Mopar mopar Joined: Jul 2009 Posts: 413 Norway (old world)	You mentioned forged pistons, but what about the crank? A friend of mine bought a so-called forged stroker kit which meant forged pistons but he got the cast Eagle crank, and the I-beam rods. If they sell the kit with forged crank they call it the "racing"-kit. He had to buy a 4340 steel crank as the first thing to do....2. was a set of good H-beam rods. Supplier took the infamous cast crank in exchange. I would say cast Eagle crank for Mopar is don't. Cast Scat/MP crank OK. Forged Eagle crank OK (enough). Check this before going further.... My

Re: 408 stroker do's/donts [Re: Oyvind Mopar] #1361888 12/31/12 07:15 PM 12/31/12 07:15 PM
Joined: Jun 2004 Posts: 378 bc canada 6 67valiant OP enthusiast
67valiant OP enthusiast 6 Joined: Jun 2004 Posts: 378 bc canada	this is the kit i ordered 360 Main 4340 Forged Competition Rotating Assemblies 360 Main, 4340 Standard Weight Forged Cranks, I-Beam Connecting Rods with 7/16" Cap Screws INTERNAL BALANCED ROTATING ASSEMBLIES 08 4-360-4000-6123-2123 2-ICR6123-2124 4.000" 6.123" FORGED 4.030 FLAT 12.1 11.3 10.8 1-48033 1-48033BI right now i have a strip dom intake but looking at a m 1 and can get a 850 speed demon carb right now i have a worked over 750 that flows good 7526726-HAN029.jpg (326 downloads)

Re: 408 stroker do's/donts [Re: 67valiant] #1361889 12/31/12 07:58 PM 12/31/12 07:58 PM
Joined: Feb 2007 Posts: 1,025 Las Vegas, NV dodgeboy11 super stock
dodgeboy11 super stock Joined: Feb 2007 Posts: 1,025 Las Vegas, NV	I wouldn't take an eagle crank for a mopar period. Especially not a cast crank. The H-beam rods are good though. Not afraid of the Scat I beam rods either.

Re: 408 stroker do's/donts [Re: dodgeboy11] #1361890 01/01/13 09:08 AM 01/01/13 09:08 AM
Joined: Jun 2008 Posts: 10,847 Oakdale CT gdonovan I Live Here
gdonovan I Live Here Joined: Jun 2008 Posts: 10,847 Oakdale CT	Quote: I wouldn't take an eagle crank for a mopar period. Especially not a cast crank. Friend with a Dakota broke one inside a few miles right at the number 7/8 journal. Eagle told him his transmission broke it shifting to hard! I kid you not... He is still pissed off, they refused to make good on it.

Re: 408 stroker do's/donts [Re: gdonovan] #1361891 11/01/14 11:05 PM 11/01/14 11:05 PM
Joined: Feb 2007 Posts: 1,025 Las Vegas, NV dodgeboy11 super stock
dodgeboy11 super stock Joined: Feb 2007 Posts: 1,025 Las Vegas, NV	Yeah, mine broke between #1 rod and main. They told me detonation did it. After getting the supervisors involved, they sent me a new crankshaft. I gave it away.

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