Re: Hey How many rpms do big blocks turn
[Re: n_bogie1984]
#355900
06/24/09 07:47 AM
06/24/09 07:47 AM
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Joined: Jan 2003
Posts: 13,402 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,402
Marion, South Carolina [><]
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I shifted my old 440 at 6700-6800 and crossed the stripe at the same rpm. Stock block and crank, Manley H beams, and Ross slugs. CHIP
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Hey How many rpms do big blocks turn
[Re: emarine01]
#355902
06/24/09 08:51 AM
06/24/09 08:51 AM
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Joined: Jan 2005
Posts: 176 Sterling Heights, MI
John_T_Brown
member
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member
Joined: Jan 2005
Posts: 176
Sterling Heights, MI
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The current low deck 440 Super Stock engine that I’m running makes power @8500… shift it there and go thru the lights there.
If it ain't broke fix it anyway!
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Re: Hey How many rpms do big blocks turn
[Re: John_T_Brown]
#355904
06/24/09 09:41 AM
06/24/09 09:41 AM
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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:
The current low deck 440 Super Stock engine that I’m running makes power @8500… shift it there and go thru the lights there.
that's turning it up... I'd like to see that thing run.
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Re: Hey How many rpms do big blocks turn
[Re: aarcuda]
#355905
06/24/09 09:49 AM
06/24/09 09:49 AM
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Joined: Jan 2007
Posts: 3,695 nc
emarine01
OP
master
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OP
master
Joined: Jan 2007
Posts: 3,695
nc
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Quote:
thats like asking how high does the tide get
I can answer that , It depends on how hard the wind blows, Any how I am happy to see that the mopar guys at the factory remembered the rest of the head bolts on big blocks and the deep skirt @ the crank looks better for high load apps, are the factory big blocks as far out of machine spec as all the 360s I measured?
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Re: Hey How many rpms do big blocks turn
[Re: John_T_Brown]
#355907
06/24/09 11:08 AM
06/24/09 11:08 AM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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Quote:
The current low deck 440 Super Stock engine that I’m running makes power @8500… shift it there and go thru the lights there.
Steve Wann on a normal pass spins his low deck 440 Super Stock engine to 8400 so that seems pretty typical..
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Re: Hey How many rpms do big blocks turn
[Re: Barnstorm]
#355908
06/24/09 12:05 PM
06/24/09 12:05 PM
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Joined: Jan 2003
Posts: 684 St. Charles, MO.
Slingshot383
mopar
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mopar
Joined: Jan 2003
Posts: 684
St. Charles, MO.
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400 block, steel crank, aluminum rods, light pistons, launch at 6200, shift at 7800, through the lights at 8200.
1994 Undercover Chassis 125" altered
stack injected big block, soon blown and injected
Member of The Torque and Recoil Club
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Re: Hey How many rpms do big blocks turn
[Re: emarine01]
#355909
06/24/09 12:58 PM
06/24/09 12:58 PM
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Joined: Mar 2003
Posts: 15,493 the boonies
aarcuda
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 15,493
the boonies
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Quote:
Quote:
thats like asking how high does the tide get
I can answer that , It depends on how hard the wind blows,
close. there are lots of factors. Moon phase, storm activity, winds, etc. and the answer to this question is even more complex but still the same. it depends on what you built.
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Re: Hey How many rpms do big blocks turn
[Re: emarine01]
#355911
06/24/09 02:43 PM
06/24/09 02:43 PM
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Joined: Jun 2004
Posts: 1,226 Peoples republic of clackamas ...
atoetly
pro stock
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pro stock
Joined: Jun 2004
Posts: 1,226
Peoples republic of clackamas ...
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Quote:
In the past I was only intrested in Hp per cubic inch , now days It seems Hp per cubic dollar has to be factored in also
Unless your able to BS companies out of parts for free. I shifted my old engine at 6500 and went through the traps at 7200. Haven't got that all sorted out with the new engine yet.
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Re: Hey How many rpms do big blocks turn
[Re: emarine01]
#355912
06/24/09 05:34 PM
06/24/09 05:34 PM
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Joined: Apr 2007
Posts: 871 WA 98043
thecarfarmer
super stock
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super stock
Joined: Apr 2007
Posts: 871
WA 98043
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Quote:
So stock small blocks and stock big blocks spin around the same speed
Well, my stock 383 (stock except for a 4bbl on a DP4B...) was ALL DONE by 5K RPM. Panting and out of breath.
My last 383 (stock longblock w/ cam) spun a #6 rod bearing at an estimated 6K (4.1 gears, 26.5" tire, 50MPH in 1st w/ stock 2.45), but it was tired. Obviously. Now, it's dead.
I'm getting ready to fire the new 383 (stock block/caps with studs, 6.535" I-beam rods, 4.25" crank) in a couple weeks. We'll see if it ever needs to go over six grand (unported stealths, 262 deg. @ .050" roller) or not. If so, probably not by much.
But I'm not planning on spinning it to the moon, although I know a few members on here who report shifting their low decks with 'Source stroker kits at 7K+ RPM.
FWIW
-Bill
Seduce the attractive, and charm the rest.
******
489 C.I.D., roller cam, aftermarket heads, tunnel ram, stock '54 Dodge rear axle assembly: which of these doesn't belong?
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Re: Hey How many rpms do big blocks turn
[Re: Dunnuck Racing]
#355913
06/24/09 05:43 PM
06/24/09 05:43 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
Mine traps about 6800 to 7000. I shift it at 6500...
That pretty much describes mine: stock block; stock forged 440 crank; aftermarket h-beam rods; aftermarket forged pistons; aftermarket caps; updated oil system.
The bob weight is NOT "light" at 2500 grams, but it is around 300 grams lighter than what it would be using all OEM parts.
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Re: Hey How many rpms do big blocks turn
[Re: BradH]
#355914
06/24/09 05:56 PM
06/24/09 05:56 PM
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Joined: Mar 2009
Posts: 2,475 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,475
Sydney,Australia
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stock 440 block,1977 +055,stock caps and rods,eagle stock stroke crank ,SRP pistons,ARP main studs-rod bolts.prepped stealth heads purple 509 cam with 3.91 gears leave at 22-2500rpm shift at 5900 trap at 6000 3700+lbs runs 11.52@118Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Hey How many rpms do big blocks turn
[Re: aarcuda]
#355915
06/24/09 09:12 PM
06/24/09 09:12 PM
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Joined: Feb 2005
Posts: 28,312 Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Quote:
Quote:
thats like asking how high does the tide get
I can answer that , It depends on how hard the wind blows,
close. there are lots of factors. Moon phase, storm activity, winds, etc. and the answer to this question is even more complex but still the same. it depends on what you built.
For sure,It all depends on what parts you use.
This cast KB motor has been 10400 more than once. It will break valve springs at that RPM but the bottem end lives for any run. I shift it at 9800 and it is real easy to over rev to 10K+ in a split sec. BTW the bob weight on this one is 2250 3.750 stroke 451".500 low deck. Built for RPM, cam makes power from 8800-9800 RPM with 60# of boost. Have two complete motors sitting here.
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