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Re: Help Picking Stroker Parts Sm Blk
[Re: Scamp408]
#442741
08/20/09 01:30 PM
08/20/09 01:30 PM
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Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
S/ST 3040
master
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master
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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Quote:
Would there be a diff if you go to a dish piston to lower the comp?
A difference in what? Compression height?
You can make piston shorter than zero deck but, current trend is closed chamber
heads with .040"-.050" quench. If you want or need a lower compression ratio, you
simply choose a piston with a dish of appropriate size or spec your custom piston
with whatever dish/mirrored chamber you need.
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Re: Help Picking Stroker Parts Sm Blk
[Re: Scamp408]
#442744
08/21/09 12:04 PM
08/21/09 12:04 PM
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Joined: Jan 2003
Posts: 11,732
Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,732
Portage,michigan
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Quote:
Would changing the cubes from 408 to 420 or bigger make that much of a diff?
Not likely, to any big extent at all.
Most 59 degree heads are actually to small for 400+ inch race engines as it is anyway. I know my W5'S are to small for my 422 inches... Eddies, W2'S, b1ba's and some indy's are definately that way as well.
Do depending on the head to be used, going bigger can have an actually diminishing effecr.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, low 10.30’s 1/4
1.41 best 60 foot
6.56 at 104.17
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Re: Help Picking Stroker Parts Sm Blk
[Re: Scamp408]
#442746
08/22/09 10:41 AM
08/22/09 10:41 AM
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Joined: Mar 2007
Posts: 3,300
Northern Indiana
Dunnuck Racing
master
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master
Joined: Mar 2007
Posts: 3,300
Northern Indiana
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Quote:
Would changing the cubes from 408 to 420 or bigger make that much of a diff?
More torque,less gear so you won't have to wind it as high.Although the difference might be marginal. 
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Re: Help Picking Stroker Parts Sm Blk
[Re: b1dartsport]
#442749
08/22/09 03:47 PM
08/22/09 03:47 PM
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Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
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I am building a 414 out of a 340 and just mocked it up a few minutes ago I have some awesome Crower I beam billet rods Wiseco pistons (thanks Dram  ) mopar 4 inch forged crank, even with the big 7/16 bolts I have no grinding to do and expect my block is the weak link now, that is why I went with a 4.060 (.020 over) bore. Thicker walls the better. I have mopar aluminum magnums I got a screaming deal on. I traded for an air gap intake, a buddy bought me a set of mopar 1.7 roller rockers as a tip for building him an awesome engine and Comp XE 268 cam. Sounds like I will have around 450 hp as is, later down the road I will get the heads ported by a pro and get a little bigger custom cam and hopefull make another 75-100 hp. I prefer picking parts myself as oposed to buying a kit because I don't like the combinations offered and I horse trade and search for screaming deals on stuff and patiently wait for the right deals. My motor is going to cost about 1/3 what it would to buy from one place at one time on the credit card but it took me about 3 years hoarding parts and tradeing for what I want.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Help Picking Stroker Parts Sm Blk
[Re: HotRodDave]
#442750
08/22/09 05:10 PM
08/22/09 05:10 PM
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Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms
Mr Wizzard
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Mr Wizzard
Joined: Jan 2003
Posts: 42,714
Spokane Washington
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Quote:
Sounds like I will have around 450 hp as is, later down the road I will get the heads ported by a pro and get a little bigger custom cam and hopefull make another 75-100 hp.
Probably so, just be careful how far you push it, although some have gotten away with running more, 500-550 is about the limit of a stock block before you start risking a major failure.
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Re: Help Picking Stroker Parts Sm Blk
[Re: b1dartsport]
#442751
08/22/09 07:13 PM
08/22/09 07:13 PM
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Joined: Feb 2005
Posts: 2,709
NJ central
Scamp408
OP
master
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OP
master
Joined: Feb 2005
Posts: 2,709
NJ central
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Quote:
My 408 combo started with a restoblock at 4.030. I used an off the shelf JE flat top piston with a 1.460 comp height. The block is decked at 6.585. With a callies dragonslayer 4" crank & chevy 6.125 h beam rod the combo comes out at zero deck. The JE piston is set up for the chevy .927 wrist pin & the callies crank has a 2.10 journal to use a chevy rod. This setup has 11.4 cr with a 65 cc Indy 360-2 230 cnc & .040 head gasket. It runs fine on 93 pump. Hope this helps.
Any power #s or et?
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Re: Help Picking Stroker Parts Sm Blk
[Re: Scamp408]
#442752
08/23/09 10:41 AM
08/23/09 10:41 AM
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Joined: Aug 2003
Posts: 1,314
Charlotte, NC
LSP
pro stock
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pro stock
Joined: Aug 2003
Posts: 1,314
Charlotte, NC
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Quote:
Any power #s or et?
I have some numbers on this combo -
Here's the combo -
factory 340 block 4.050" bore
cast Mopar 4.000" crank
Arrow 6.300" rods
JE flat tops
baffled stock 340 pan/pickup
ported "X" heads
Comp roller 268/274 .591/.591
273 rockers
Factory 340 intake manifold with plenum divider milled 1/2 way down, carb flange opened up
800 cfm Demon carb w/adapter
1&3/4 headers
2.74 low all steel 904
5000 stall
4.30 gear
9x30 Hoosiers
Cal Tracs
3400 lbs. Duster
shifts made @ 6500 rpm
10.77 @ 123 with a 1.44 60ft. @ 3500 ft. DA
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Re: Help Picking Stroker Parts Sm Blk
[Re: RyanJ]
#442754
08/23/09 02:21 PM
08/23/09 02:21 PM
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Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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Quote:
K1 4340 4.0" 340 main W/ 2.10" GM journals K1# 340-4000EB6F ~58 lbs (catalog spec)
K1 6.125" X 2.10" X .927" GM H beam rods K1# CH6125ALLB8-A ~645 grams (catalog spec)
Diamond #51027 4.03" Bore X 1.457" CH X .927" GM pin for 4.0" Stroke SB Mopar flat tops -6.8CC reliefs. ~502 grams (catalog spec)
Diamond #09024030 File fit moly ring set (manufactured by Mahle most likely)
Clevite CB663HN or CB663HXN rod bearings
Clevite MS540H or MS540HX main bearings
Should internally balance W/no metal added.
Simple, affordable, GM journals/pins, VG machining quality, fairly light parts, & definitely strong enough to handle anything you can throw at it NA.
~11.00:1 compresion assuming an OOB ~68 CC INDY CNC combustion chamber, zero deck height & .040" X 4.125" Cometic head gasket.
what would you change ,if it was to get 175 shot of spray?
cheapst
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured
[image][/image]
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Re: Help Picking Stroker Parts Sm Blk
[Re: ademon]
#442755
08/24/09 04:33 AM
08/24/09 04:33 AM
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Joined: Aug 2003
Posts: 1,314
Charlotte, NC
LSP
pro stock
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pro stock
Joined: Aug 2003
Posts: 1,314
Charlotte, NC
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Quote:
What size valves in the X heads? any pics of the engine R5-P7? must look very stock!!
2.055" x 1.625", no engine pics yet.
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Re: Help Picking Stroker Parts Sm Blk
[Re: Scamp408]
#442756
08/24/09 08:07 AM
08/24/09 08:07 AM
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Joined: Feb 2005
Posts: 982
western pennsylvania
b1dartsport
super stock
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super stock
Joined: Feb 2005
Posts: 982
western pennsylvania
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Quote:
Quote:
My 408 combo started with a restoblock at 4.030. I used an off the shelf JE flat top piston with a 1.460 comp height. The block is decked at 6.585. With a callies dragonslayer 4" crank & chevy 6.125 h beam rod the combo comes out at zero deck. The JE piston is set up for the chevy .927 wrist pin & the callies crank has a 2.10 journal to use a chevy rod. This setup has 11.4 cr with a 65 cc Indy 360-2 230 cnc & .040 head gasket. It runs fine on 93 pump. Hope this helps.
Any power #s or et?
I have not had mine to a dyno. I have a friend who has almost the exact same combo,his dyno numbers were 640 hp & 551 torque with a 1050 race demon rs & crane off the shelf cam 260/266 @.50 & .630 lift with t&d 1.6 rockers. I have had my car out 2 times. My best was 9.87 at 136.53 with a 1.39 60 ft. My car is a 73 dart sport,Bg racing 904,8" A-1 converter flashes at 5200 rpm,Dana 4.56 29.5 hoosiers, cal tracks,same race demon carb 88 jets front & rear,3060# with me in it. I have to make up my mind to either put a cage in it or slow it down,because i think theres more in it. I only have an 8 pt roll bar in it now.
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Re: Help Picking Stroker Parts Sm Blk
[Re: Scamp408]
#442758
08/24/09 03:01 PM
08/24/09 03:01 PM
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Joined: Feb 2005
Posts: 982
western pennsylvania
b1dartsport
super stock
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super stock
Joined: Feb 2005
Posts: 982
western pennsylvania
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Quote:
I have the same heads and almost same race weight .I am only looking for 10s .What intake are you using?
Using the Indy 360-3R with a 1" hvh open spacer. If you use that intake it is very important to match the port divider & the top of the manifold ports with your heads. My car is also driven on the street. I use 93 pump on the street & a 50/50 pump 101 mixture on the track. So far so good. Make sure you check the valve job on those heads. Mine had some problems out of the box.
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I wanted to put the indy heads on what I have now but I dont know if the rot assm can take it.
