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Re: Small Block vs Big Block [Re: WHITEDART] #2623236
02/19/19 10:38 AM
02/19/19 10:38 AM
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Trumbauersville PA
ric3xrt Offline
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Fwiw all BBC use a 6.135 C to C connecting rod
…………396/402......……...….427/454
bore 4.094/4.126..............4.250
stroke 3.760...........……….3.760/4.000


Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View



Re: Small Block vs Big Block [Re: WHITEDART] #2623261
02/19/19 12:15 PM
02/19/19 12:15 PM
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New York
polyspheric Offline
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... wish I'd said that.
Oh wait...


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Re: Small Block vs Big Block [Re: polyspheric] #2623265
02/19/19 12:24 PM
02/19/19 12:24 PM
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Trumbauersville PA
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Originally Posted By polyspheric
... wish I'd said that.
Oh wait...



Yes you did, I just thought I'd clarify the rod length,...I see you still have not fixed the Hemi Magnum info for the 6.4 on your http://victorylibrary.com/mopar/m-table-c.htm#Boss chart...Thank you for all the other correct info in that chart


Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View



Re: Small Block vs Big Block [Re: WHITEDART] #2623409
02/19/19 07:04 PM
02/19/19 07:04 PM
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Posts: 655
Huntsville, AL
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Airwoofer Offline
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Huntsville, AL
Originally Posted By WHITEDART
I was looking at the rule package 4 nmca.n/a 10.5.. they call out big block Chrysler gets a weight break but yet they do not give the small block Chrysler a weight break.. so is there a cylinder head deficiency for the big block. I think at the highest level Australian Pro Stock small blocks make the most horsepower per cubic inch they are at 3 or maybe even slightly above.


Sounds like a way to slip in a KB alum block and still get a weight advantage. Mega block is way heavy, KB not so much.

The KOS Demon I bought from Mike Robbins had the original motor. 4.500 bore, 3.81 stroke. Huge 47cc B1 heads with 1.7 Jessels, 16-1 and 300* cam. The first time I took it into the water box it had no rev limit chip and I was used to my 416 SB, so I just mashed it in 2nd and watched the guy who tells you to go open his eyes as big as silver dollahs. Next time I asked him what he was looking at and he said it was gonna blow. So that burnout I actually looked at the tack and saw 9300 right away. Mike said he shifted at 8600 or something.

I will sell it BTW.


Last edited by Airwoofer; 02/19/19 07:22 PM.
Re: Small Block vs Big Block [Re: WHITEDART] #2623468
02/19/19 10:37 PM
02/19/19 10:37 PM
Joined: Oct 2007
Posts: 4,205
New York
polyspheric Offline
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My goal is to be less wrong than the Supreme Court.
I'm winning.


Boffin Emeritus
Re: Small Block vs Big Block [Re: polyspheric] #2623511
02/19/19 11:45 PM
02/19/19 11:45 PM
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Bend,OR USA
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Originally Posted By polyspheric
My goal is to be less wrong than the Supreme Court.
I'm winning.

Is that with you being the judge or someone who is not biased whistling stirthepot grin


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Small Block vs Big Block [Re: Cab_Burge] #2623530
02/20/19 12:29 AM
02/20/19 12:29 AM
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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WHITEDART Offline OP
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Well we are going heads up all motor racing this weekend I will report back how many Big Blocks and small blocks they're were


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: Small Block vs Big Block [Re: WHITEDART] #2623541
02/20/19 12:50 AM
02/20/19 12:50 AM
Joined: Feb 2005
Posts: 1,556
New Smyrna Beach FL
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scottb Offline
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New Smyrna Beach FL
Good luck this wknd

Re: Small Block vs Big Block [Re: scottb] #2623544
02/20/19 01:05 AM
02/20/19 01:05 AM
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bean town ....Ca
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WHITEDART Offline OP
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Originally Posted By scottb
Good luck this wknd
. Thanks man going to need it


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: Small Block vs Big Block [Re: WHITEDART] #2623752
02/20/19 03:59 PM
02/20/19 03:59 PM
Joined: Oct 2007
Posts: 4,205
New York
polyspheric Offline
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I have a reliable method of avoiding rude remarks: stop helping.
Did you think my questions are answered here? Not in many years.

For those not sure about the Supreme Court thing, explain:
Kelo
Citizens United
Batson
Dual sovereignty
FISA


Boffin Emeritus
Re: Small Block vs Big Block [Re: WHITEDART] #2623754
02/20/19 04:01 PM
02/20/19 04:01 PM
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Posts: 9,866
Weddington, N.C.
Streetwize Offline
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When I built my first W2 340 I concluded that a 340" motor turning 7600 RPM was as "BIG" (in terms of pumping air..ie, at the same relative VE) as a 440" motor of the time turning 5800. Back it those days (late 70's early 80's) Mopar people were just starting to routinely pull their 440 wedges and swapping in 340 and 360" "giant killers"...In Cudas, road runners, I even remember a 67 Charger. at 7600 my W2 was peaking, by 5800 most BB wedges of the time were already nosing over or else they had comparatively narrow "light switch" powerbands. We didn't have bolt on BB heads that flowed 380 back then, I doubt few flowed much over 290 with a lot of port work and wafer thin or epoxied ports. Back in those days the quickest cars were BB Chevies and Cleveland fords and Hemi's but there weren't really that many Elephants around.

Air flow and efficiency determine how BIG a motor is, how much air it can move efficiently is generally more important than static displacement. And we're just talking naturally aspirated here....Turbos are a whole 'nother level and less, generally speaking smaller/lighter engines are more thermally and volumetrically efficient overall.

Last edited by Streetwize; 02/20/19 04:06 PM.

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: Small Block vs Big Block [Re: polyspheric] #2623784
02/20/19 05:09 PM
02/20/19 05:09 PM
Joined: Nov 2009
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St. Paul , Mn.
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Originally Posted By polyspheric
My goal is to be less wrong than the Supreme Court.
I'm winning.


To steal a phrase from virtually every judge I have seen on television series from the 60's , " one more outburst like that and I'll clear the court. ".
After careful deliberation , I enjoy reading your input and addition to the posts on here.
You are right a lot more than I am. ;-)

Re: Small Block vs Big Block [Re: WHITEDART] #2624235
02/21/19 03:19 PM
02/21/19 03:19 PM
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Posts: 19,304
Las Vegas
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Are we done with the political stuff now? Is everyone bored and stuck inside because of the weather?

People share their opinions/experiences on here, take them for what they are worth. Some are more theoretical opinion than practical application. I prefer to live by the moto that its all theory til its put into practice. Ive been in and around this business for a very long time and seen some great ideas fail miserably and some folks throw things together that have no right to even work, that work very well. We learn more from mistakes than successes sometimes.

BTW Shiloh 2.55 per cube is a great goal. Build it smaller and shoot for 2.6 wink


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: Small Block vs Big Block [Re: Streetwize] #2624269
02/21/19 04:20 PM
02/21/19 04:20 PM
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Posts: 1,400
Trumbauersville PA
ric3xrt Offline
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Originally Posted By Streetwize


Air flow and efficiency determine how BIG a motor is, how much air it can move efficiently is generally more important than static displacement. And we're just talking naturally aspirated here....Turbos are a whole 'nother level and less, generally speaking smaller/lighter engines are more thermally and volumetrically efficient overall.



this point a few people always seem to forget,


Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View



Re: Small Block vs Big Block [Re: WHITEDART] #2624272
02/21/19 04:21 PM
02/21/19 04:21 PM
Joined: Jan 2006
Posts: 1,400
Trumbauersville PA
ric3xrt Offline
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Trumbauersville PA
Originally Posted By WHITEDART
Well we are going heads up all motor racing this weekend I will report back how many Big Blocks and small blocks they're were


Knock down some score boards for us Good Luck


Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View



Re: Small Block vs Big Block [Re: WHITEDART] #2624274
02/21/19 04:24 PM
02/21/19 04:24 PM
Joined: Jan 2006
Posts: 1,400
Trumbauersville PA
ric3xrt Offline
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ric3xrt  Offline
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Trumbauersville PA
Love you Jeffery ......seriously have a ton a respect for Poly and his Library


Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View



Re: Small Block vs Big Block [Re: Al_Alguire] #2624528
02/22/19 01:03 AM
02/22/19 01:03 AM
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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WHITEDART Offline OP
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bean town ....Ca
Originally Posted By Al_Alguire
I prefer to live by the moto that its all theory til its put into practice. Ive been in and around this business for a very long time and seen some great ideas fail miserably and some folks throw things together that have no right to even work, that work very well. We learn more from mistakes than successes sometimes.

BTW Shiloh 2.55 per cube is a great goal. Build it smaller and shoot for 2.6 wink
. I have made more mistakes broke and ruined more good parts by trial and error myself sometimes I wonder what I'm doing... . 2.6 would be great just really depends on how generous the dyno is to me that day.


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: Small Block vs Big Block [Re: WHITEDART] #2624594
02/22/19 05:35 AM
02/22/19 05:35 AM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Originally Posted By WHITEDART
Originally Posted By Al_Alguire
I prefer to live by the moto that its all theory til its put into practice. Ive been in and around this business for a very long time and seen some great ideas fail miserably and some folks throw things together that have no right to even work, that work very well. We learn more from mistakes than successes sometimes.

BTW Shiloh 2.55 per cube is a great goal. Build it smaller and shoot for 2.6 wink
. I have made more mistakes broke and ruined more good parts by trial and error myself sometimes I wonder what I'm doing... . 2.6 would be great just really depends on how generous the dyno is to me that day.

Do us be racing dyno now whistling devil
Flog that motor and car wrench up twocents


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Small Block vs Big Block [Re: WHITEDART] #2624632
02/22/19 12:02 PM
02/22/19 12:02 PM
Joined: Oct 2007
Posts: 4,205
New York
polyspheric Offline
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My actual field is divorce law...


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Re: Small Block vs Big Block [Re: WHITEDART] #2624651
02/22/19 12:46 PM
02/22/19 12:46 PM
Joined: Jul 2009
Posts: 489
IL
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EchoSixMike Offline
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IL
Most of the reasonably intelligent racers I know plan out their build around the rules, with the chassis first, figure out how light they can afford to make it, then figure how many cubic inches that they can run at that weight.

one local guy I know just couldn't get his SBC light enough within the rules, at 275-something radial class and this was a 3 stage nitrous car running 4.8's. Now he runs a 582 BBC, and is working on making 4.5's. S/F....Ken M

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