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Re: 408 stroker do's/donts [Re: 67valiant] #1361892
11/02/14 09:22 AM 11/02/14 09:22 AM
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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CHAPPER Offline
master
CHAPPER  Offline
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Belpre,Ohio
I had 2 MP 4" cast cranks. 1 showed up cracked after 1 season in a dirt car. The other showed no signs of cracking when magna-fluxed, but 5-6 crank pin broke out of it 4 races after freshening...

If you like drag racing, support your local track.
Re: 408 stroker do's/donts [Re: CHAPPER] #1361893
11/02/14 09:30 AM 11/02/14 09:30 AM
Joined: Jan 2003
Posts: 32,394
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Quicktree Offline
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if you haven't put money down already I would rethink the way you are going. just find a builder you trust and let them spec you out a kit. I wouldn't trust any of those kits coming direct. you will end up paying twice because you will have to check their work.
Re: 408 stroker do's/donts [Re: Quicktree] #1361894
11/02/14 11:14 AM 11/02/14 11:14 AM
Joined: Aug 2003
Posts: 11,179
Atco NJ
DJVCuda Offline
I Live Here
DJVCuda  Offline
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Joined: Aug 2003
Posts: 11,179
Atco NJ
Call Rod Bloomer @ BPE ( BPE is his handle on this site )



Here is my build : ( I know it's not a 408, but it's close enough to get some pointers)

https://board.moparts.org/ubbthreads/show...rt=all&vc=1


And the stories a mag picked up :

https://board.moparts.org/ubbthreads/showflat.php?Number=7550785
Re: 408 stroker do's/donts [Re: DJVCuda] #1361895
11/02/14 12:23 PM 11/02/14 12:23 PM
Joined: Oct 2008
Posts: 492
South Jersey, NJ
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DragDart360 Offline
mopar
DragDart360  Offline
mopar
D

Joined: Oct 2008
Posts: 492
South Jersey, NJ
I see you spec'ed a forged crank and I beam rods, I would replace the I beams with H beams, to many stories of problems with the I beams.
I had a reputable builder do my short block assy and spec the cam, he recommended a Bullit solid roller and Howards lifters, 11 to 1 compression with Eddy heads. It has over 200 runs in the 10's with no issues. Went 9.94 with 6.27 in the 1/8 a couple weeks ago. My Dart weighs about 2800.

70 Dart Swinger, 2850 lbs
SB 408, Bullet roller 264/268 @50 .636 SSDS stage 2 Edelbrock heads, 1 7/8 Headmans, 1050 dominator by Dom, 9.867 @ 133
Re: 408 stroker do's/donts [Re: DragDart360] #1361896
11/03/14 02:24 PM 11/03/14 02:24 PM
Joined: Jan 2003
Posts: 16,376
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dogdays Offline
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Nothing wrong with an I-beam rod, as far as the design goes. NASCAR rods run 9500 rpm and are all I-beam. The rods in his kit are Scat with 7/16" rod bolts, they have a very good reputation.
Also, the 4340 crank should be just fine. Just check the journals for taper and roundness, like you'd do on any high performance build.

Here once again is a guy with a decent plan and everyone starts telling him to spend some more money or hinting that he didn't make good choices.

In my book, the only bad choice is the ported iron heads. But maybe the horsepower they'll allow is enough for his goals? Or maybe he has a set of aftermarket iron heads?

R.
Re: 408 stroker do's/donts [Re: dogdays] #1361897
11/03/14 02:37 PM 11/03/14 02:37 PM
Joined: Jan 2003
Posts: 32,394
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Quote:

Nothing wrong with an I-beam rod, as far as the design goes. NASCAR rods run 9500 rpm and are all I-beam. The rods in his kit are Scat with 7/16" rod bolts, they have a very good reputation.
Also, the 4340 crank should be just fine. Just check the journals for taper and roundness, like you'd do on any high performance build.

Here once again is a guy with a decent plan and everyone starts telling him to spend some more money or hinting that he didn't make good choices.

In my book, the only bad choice is the ported iron heads. But maybe the horsepower they'll allow is enough for his goals? Or maybe he has a set of aftermarket iron heads?

R.

i would rather have an H beam any day when messing with chinese junk
Re: 408 stroker do's/donts [Re: Quicktree] #1361898
11/04/14 05:32 AM 11/04/14 05:32 AM
Joined: Aug 2003
Posts: 3,245
Between a rock & a hard place
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cudadoug Offline
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Posts: 3,245
Between a rock & a hard place
Good luck with SCAT I-beams here. Many runs in a 12:1 416 with a not-so-light ICON piston at 7200 at the stripe.

Three of the rod's big end were "blued" because of a non rod problem and still didn't break.
Re: 408 stroker do's/donts [Re: 67valiant] #1361899
11/04/14 06:22 AM 11/04/14 06:22 AM
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar Offline
master
451Mopar  Offline
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
Basic stuff: Clearance pushrod holes for higher ratio rocker arms and/or 3/8" pushrods. If using head studs, enlarge the long head bolt hole that the rocker arm oil flows through from the block to the rockers. Ream the main bearing oil holes to the main oil galley.
Re: 408 stroker do's/donts [Re: 451Mopar] #1361900
11/04/14 11:05 AM 11/04/14 11:05 AM
Joined: Feb 2003
Posts: 3,456
Out West
4
408strokerdart Offline
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Out West
Don't: Don't take advice from people who have never completed a project like this before.

Do: Find some help from suppliers with proven track records similar to your build. Brian at IMM and Rod Bloomer both come to mind.

Don't: Don't use Shadydell for anything.
Re: 408 stroker do's/donts [Re: 408strokerdart] #1361901
11/05/14 01:49 AM 11/05/14 01:49 AM
Joined: May 2014
Posts: 108
Socal
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littleVAL Offline
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Socal
I am curious why not to use shady dell they appear to be the most knowledgeable people on small blocks with plenty of info in there site to boot. I was thinking of having them do the machining on my R block because of there cnc programs for lightening etc.
Re: 408 stroker do's/donts [Re: littleVAL] #1361902
11/05/14 03:19 AM 11/05/14 03:19 AM
Joined: Feb 2003
Posts: 3,456
Out West
4
408strokerdart Offline
master
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Out West
Quote:

I am curious why not to use shady dell they appear to be the most knowledgeable people on small blocks with plenty of info in there site to boot. I was thinking of having them do the machining on my R block because of there cnc programs for lightening etc.



You might get decent work done on your block, but that is where I would let it end. Just remember that talk is cheap. You can "know" a lot about something and still not be able to practically apply that knowledge.

Re: 408 stroker do's/donts [Re: 408strokerdart] #1361903
11/05/14 11:34 AM 11/05/14 11:34 AM
Joined: Oct 2008
Posts: 492
South Jersey, NJ
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DragDart360 Offline
mopar
DragDart360  Offline
mopar
D

Joined: Oct 2008
Posts: 492
South Jersey, NJ
I have Shady Dell prepped heads and short block, excellent work, I have over 200 runs on my combo with absolutely no problems. I asked Ryan to put together an engine that would run 10.50 reliably in a 2800 lb car. It runs consistent 9.90's reliably. Delivered on time and on budget.

70 Dart Swinger, 2850 lbs
SB 408, Bullet roller 264/268 @50 .636 SSDS stage 2 Edelbrock heads, 1 7/8 Headmans, 1050 dominator by Dom, 9.867 @ 133
Re: 408 stroker do's/donts [Re: DragDart360] #1361904
11/06/14 02:03 AM 11/06/14 02:03 AM
Joined: Jan 2004
Posts: 1,249
North Carolina
4
469runner Offline
pro stock
469runner  Offline
pro stock
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Posts: 1,249
North Carolina
Ryan Johnson of Shady Dell did an a 408 for me a couple of years ago. All I can say is it delivers the goods. A great street engine that scares the boogers out of me when I stand on it. I don't know anyone who is more experienced with small block engines.
Re: 408 stroker do's/donts [Re: 469runner] #1361905
11/06/14 10:57 AM 11/06/14 10:57 AM
Joined: Dec 2006
Posts: 1,178
Indy
FlyFish Offline
super stock
FlyFish  Offline
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Joined: Dec 2006
Posts: 1,178
Indy
Ryan Johnson at Shadydell ported my Edelbrocks. Even though my car has a small cam, pump gas compression, small carb, street car, through the exhaust, it still runs 10.5's @ 125mph.....I'd say they work pretty well. I'm very happy with the work he did on my heads.

67 Barracuda street car, 408, e85, 1.38 60', 6.44 @105.9 in the 1/8 mile, 10.19 @130.5 in the 1/4...so far....
Re: 408 stroker do's/donts [Re: 408strokerdart] #1361906
11/06/14 02:20 PM 11/06/14 02:20 PM
Joined: Jan 2003
Posts: 32,394
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Quicktree Offline
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Quote:

Quote:

I am curious why not to use shady dell they appear to be the most knowledgeable people on small blocks with plenty of info in there site to boot. I was thinking of having them do the machining on my R block because of there cnc programs for lightening etc.



You might get decent work done on your block, but that is where I would let it end. Just remember that talk is cheap. You can "know" a lot about something and still not be able to practically apply that knowledge.

if you have a problem with them you may want to explain instead of just slamming them.
Re: 408 stroker do's/donts [Re: Quicktree] #1361907
11/06/14 08:03 PM 11/06/14 08:03 PM
Joined: Apr 2010
Posts: 1,049
ohio
A
all spooled up Offline
super stock
all spooled up  Offline
super stock
A

Joined: Apr 2010
Posts: 1,049
ohio
shady dell has -ucked up more stuff than you would ever no.

Re: 408 stroker do's/donts [Re: all spooled up] #1361908
11/06/14 08:13 PM 11/06/14 08:13 PM
Joined: Jan 2003
Posts: 32,394
Q
Quicktree Offline
I Win
Quicktree  Offline
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Posts: 32,394
Quote:

shady dell has -ucked up more stuff than you would ever no.

your stuff?
Re: 408 stroker do's/donts [Re: Quicktree] #1361909
11/06/14 10:09 PM 11/06/14 10:09 PM
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt Offline
master
1967dartgt  Offline
master

Joined: Oct 2007
Posts: 3,978
Hilltown Pa
Yes my stuff. Brian has a big post on all the stuff he found wrong with his motor on disassembly. You need to search two years ago. I don't think he wants to go through it all again.

Last edited by 1967dartgt; 11/06/14 10:14 PM.
Brett Miller W9 cnc'd heads
STR Chassis fabraction
Re: 408 stroker do's/donts [Re: 1967dartgt] #1361910
11/07/14 12:11 AM 11/07/14 12:11 AM
Joined: Feb 2003
Posts: 3,456
Out West
4
408strokerdart Offline
master
408strokerdart  Offline
master
4

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Posts: 3,456
Out West
Not going to go into it again. I have explained in excruciating depths in the past Tony. I'm only saying it once.....this post was asking about "dont's" and I offered my opinion. It is only my opinion. The OP is free to make up their own mind on what they do with their build. If the OP decides to go with RJ for his work I hope the racing budget allows to do it twice to get it right.
Re: 408 stroker do's/donts [Re: 408strokerdart] #1361911
11/07/14 12:15 AM 11/07/14 12:15 AM
Joined: Jan 2003
Posts: 32,394
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Quicktree Offline
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dang i didn't know all that, hate to see it.
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