Previous Thread
Next Thread
Print Thread
Page 10 of 15 1 2 8 9 10 11 12 14 15
Re: big block VS small block [Re: HYPER8oSoNic] #1035595
07/22/11 01:45 PM
07/22/11 01:45 PM
Joined: Mar 2005
Posts: 2,172
Ohio
T
theclutcher Offline
top fuel
theclutcher  Offline
top fuel
T

Joined: Mar 2005
Posts: 2,172
Ohio
another factor is the bore size relative to the valve size and placement.

440s dont open on center but the smallblocks due iirc.
valve shrouding comes into play.

big or smallblock aside,

the largest bore with the most advantageous valve location with the most cycles going thru it will be the better performer when comparing equal size pumps.

Its all about passing the most air. Imo

Re: big block VS small block [Re: mike54] #1035596
07/22/11 02:11 PM
07/22/11 02:11 PM
Joined: Apr 2007
Posts: 2,028
Trumbull,CT.
J
jim sciortino Online content
top fuel
jim sciortino  Online Content
top fuel
J

Joined: Apr 2007
Posts: 2,028
Trumbull,CT.
Quote:

http://www.rehermorrison.com/blog/?p=201


What does he know????

Re: big block VS small block [Re: ademon] #1035597
07/22/11 02:17 PM
07/22/11 02:17 PM
Joined: Nov 2009
Posts: 2,275
Desert Tracker
H
HYPER8oSoNic Offline
top fuel
HYPER8oSoNic  Offline
top fuel
H

Joined: Nov 2009
Posts: 2,275
Desert Tracker
Quote:

It is funny all this talk of 45yo ancient big and small block engines when these modern cars with tiny cid engines like the Boss 302 can kick ass to the tune of 11.70 stock with just drag radials




Umm... I do think Chrysler made the slant six motor. Has two LESS cylinders than YOUR Boss 302. They're ALSO ancient, (in YOUR words). Would you run it against this 45-46 year (young) old ancient engine? I doubt it!!

http://www.youtube.com/watch?v=iuudC21ScB4&feature=related




Last edited by HYPER8oSoNic; 07/22/11 04:23 PM.

"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
Re: big block VS small block [Re: jim sciortino] #1035598
07/22/11 02:22 PM
07/22/11 02:22 PM
Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger Offline
master
RemCharger  Offline
master

Joined: Nov 2004
Posts: 2,825
Sk. Canada
Quote:

Quote:

http://www.rehermorrison.com/blog/?p=201


What does he know????


Hey thanks for posting that! Very good read.

Re: big block VS small block [Re: mike54] #1035599
07/22/11 02:44 PM
07/22/11 02:44 PM
Joined: Nov 2009
Posts: 2,275
Desert Tracker
H
HYPER8oSoNic Offline
top fuel
HYPER8oSoNic  Offline
top fuel
H

Joined: Nov 2009
Posts: 2,275
Desert Tracker
Quote:

http://www.rehermorrison.com/blog/?p=201





Quite interesting!!
Good article and it does hold some truth and merit! But, there are cam/head combos, that will produce good airflow VELOCITY for more effective power at lower rpms in some engine combos. Better burn, in cylinders, more midrange hp/torque so you won't buzz the engine as high to get an identical rate of velocity in the manifold/heads/cylinders. To do the latter you would need more port VOLUME (bigger ports) which rquires MORE engine rpm to be effective. Great for racing, not so good for "street/strip" which would lean towards a bit "wider" powerband.



"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
Re: big block VS small block [Re: HYPER8oSoNic] #1035600
07/22/11 03:07 PM
07/22/11 03:07 PM
Joined: Sep 2004
Posts: 6,906
IL, Aurora
A
ademon Offline
master
ademon  Offline
master
A

Joined: Sep 2004
Posts: 6,906
IL, Aurora
Quote:

Quote:

It is funny all this talk of 45yo ancient big and small block engines when these modern cars with tiny cid engines like the Boss 302 can kick ass to the tune of 11.70 stock with just drag radials




Umm... I do think Chryler made the slant six motor. Has two LESS cylinders than YOUR Boss 302. They're ALSO ancient, (in YOUR words). Would you run it against this 45-46 year (young) old ancient engine? I doubt it!!

http://www.youtube.com/watch?v=iuudC21ScB4&feature=related






I don't have a 2012 Boss, but i bet with some bolt on's and a pc upgrade it would run with it, then kick that /6 in braking, and on a road course, all with the a/c and stereo cranking with better mileage to boot, .

Re: big block VS small block [Re: theclutcher] #1035601
07/22/11 03:25 PM
07/22/11 03:25 PM
Joined: Nov 2009
Posts: 2,275
Desert Tracker
H
HYPER8oSoNic Offline
top fuel
HYPER8oSoNic  Offline
top fuel
H

Joined: Nov 2009
Posts: 2,275
Desert Tracker
Quote:

another factor is the bore size relative to the valve size and placement.

440s dont open on center but the smallblocks due iirc.
valve shrouding comes into play.

big or smallblock aside,

the largest bore with the most advantageous valve location with the most cycles going thru it will be the better performer when comparing equal size pumps.

Its all about passing the most air. Imo





on the passing air concept. Everything else is just a "pathway" into the cylinders. Some designs are more "frictional" to the airflow than others. In light of your "large bore" theory, which is well-documented , the theory of a "longer" cylinder
stroke which increases the volume at LESS operating speed, holds truth too!!



"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
Re: big block VS small block [Re: ademon] #1035602
07/22/11 03:34 PM
07/22/11 03:34 PM
Joined: Nov 2009
Posts: 2,275
Desert Tracker
H
HYPER8oSoNic Offline
top fuel
HYPER8oSoNic  Offline
top fuel
H

Joined: Nov 2009
Posts: 2,275
Desert Tracker
Quote:

Quote:

Quote:

It is funny all this talk of 45yo ancient big and small block engines when these modern cars with tiny cid engines like the Boss 302 can kick ass to the tune of 11.70 stock with just drag radials




Umm... I do think Chryler made the slant six motor. Has two LESS cylinders than YOUR Boss 302. They're ALSO ancient, (in YOUR words). Would you run it against this 45-46 year (young) old ancient engine? I doubt it!!

http://www.youtube.com/watch?v=iuudC21ScB4&feature=related






I don't have a 2012 Boss, but i bet with some bolt on's and a pc upgrade it would run with it, then kick that /6 in braking, and on a road course, all with the a/c and stereo cranking with better mileage to boot, .




I think I would rather LEAVE the radio and A/C
out, if I had one, driving on the "track". Can't do nothing about the heat in the helmet and suit.
Besides, I would want to be "focused" on the track
and car's handling condition, rather than the radio. I don't like spinning out and ending up hitting haybales or tire walls, even worse guardrails!!



"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
Re: big block VS small block [Re: w7smallblock] #1035603
07/22/11 03:45 PM
07/22/11 03:45 PM
Joined: Nov 2009
Posts: 2,275
Desert Tracker
H
HYPER8oSoNic Offline
top fuel
HYPER8oSoNic  Offline
top fuel
H

Joined: Nov 2009
Posts: 2,275
Desert Tracker
I agree the big block torque curve will be broader, but I said with gear and converter to match the combo's. With that said a big block with a 275/60/15 tire with 3.23 shifted at 6000 rpm would fall back to 3500 in second, then back to 6000 and fall back to 4000 in drive. While a small block with the same tire and with 4.10 shifted at 7500 would fall back to 4500 in second and back to 7500 then fall to 5200 in drive. That small block would have 500rpm more pull in 1st-2nd shift and 300rpm more pull in 2nd-drive thats 800 rpm more total. This is figured on both cars with a 727 and stock gear ratio's. This would also be with the converter dead locked which we know don't happen, but still more useable rpm from the small block.




Great point!!



"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
Re: big block VS small block [Re: HYPER8oSoNic] #1035604
07/22/11 04:01 PM
07/22/11 04:01 PM
Joined: Apr 2007
Posts: 2,028
Trumbull,CT.
J
jim sciortino Online content
top fuel
jim sciortino  Online Content
top fuel
J

Joined: Apr 2007
Posts: 2,028
Trumbull,CT.
It's amazing that in 2011, people still don't understand important things, like "shift recovery" and "useable rpm".

It has nothing to do with....."my big block is better than your small block, or vice versa.

Pity, I tell ya.

Re: big block VS small block [Re: jim sciortino] #1035605
07/22/11 04:20 PM
07/22/11 04:20 PM
Joined: Nov 2009
Posts: 2,275
Desert Tracker
H
HYPER8oSoNic Offline
top fuel
HYPER8oSoNic  Offline
top fuel
H

Joined: Nov 2009
Posts: 2,275
Desert Tracker
Quote:

It's amazing that in 2011, people still don't understand important things, like "shift recovery" and "useable rpm".

It has nothing to do with....."my big block is better than your small block, or vice versa.

Pity, I tell ya.




There are no given right or wrong answers here,
just opinions and facts. Both can be useful to learn from.



"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
Re: big block VS small block [Re: HYPER8oSoNic] #1035606
07/22/11 04:25 PM
07/22/11 04:25 PM
Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger Offline
master
RemCharger  Offline
master

Joined: Nov 2004
Posts: 2,825
Sk. Canada
Turbo small blocks and diesels......

Re: big block VS small block [Re: RemCharger] #1035607
07/22/11 04:43 PM
07/22/11 04:43 PM
Joined: Nov 2009
Posts: 2,275
Desert Tracker
H
HYPER8oSoNic Offline
top fuel
HYPER8oSoNic  Offline
top fuel
H

Joined: Nov 2009
Posts: 2,275
Desert Tracker
Quote:

Turbo small blocks and diesels......




They DO make power. But unfortunately, they aren't the topic at hand!



"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
Re: big block VS small block [Re: HYPER8oSoNic] #1035608
07/22/11 05:36 PM
07/22/11 05:36 PM
Joined: Apr 2007
Posts: 2,028
Trumbull,CT.
J
jim sciortino Online content
top fuel
jim sciortino  Online Content
top fuel
J

Joined: Apr 2007
Posts: 2,028
Trumbull,CT.
Quote:

Quote:

It's amazing that in 2011, people still don't understand important things, like "shift recovery" and "useable rpm".

It has nothing to do with....."my big block is better than your small block, or vice versa.

Pity, I tell ya.




There are no given right or wrong answers here,
just opinions and facts. Both can be useful to learn from.




Yes, there are opinions and facts in this thread.

Re: big block VS small block [Re: Thumperdart] #1035609
07/22/11 05:42 PM
07/22/11 05:42 PM
Joined: Feb 2007
Posts: 2,578
sweden
1
1Fast340 Offline
master
1Fast340  Offline
master
1

Joined: Feb 2007
Posts: 2,578
sweden
Quote:

I have the BADDEST big-block on my street............PERIOD.




you have a very impressive bigblock for sure

Re: big block VS small block [Re: 1Fast340] #1035610
07/22/11 09:03 PM
07/22/11 09:03 PM
Joined: Jul 2004
Posts: 19,318
State of confusion
T
Thumperdart Offline
I Live Here
Thumperdart  Offline
I Live Here
T

Joined: Jul 2004
Posts: 19,318
State of confusion
Quote:

Quote:

I have the BADDEST big-block on my street............PERIOD.




you have a very impressive bigblock for sure


I said "my street" cos there`s always someone around the corner who`s faster. This topic is good for both sides big and small blocks guys and gals alike as for me; I`d rather have the big block torque in a street/strip car and keep the r`s down than have a small block high revving monster that taxes even the best of parts.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: big block VS small block [Re: Thumperdart] #1035611
07/22/11 10:08 PM
07/22/11 10:08 PM
Joined: May 2008
Posts: 48
New Zealand
B
Big-Mike Offline
member
Big-Mike  Offline
member
B

Joined: May 2008
Posts: 48
New Zealand
Good grief! I can't believe the "bitchiness" of some of the small block guys in this forum.
Small blocks are great, I had a worked 360 in my car for a few years in the late eighties; but the i went big-block. Wow! what a difference! And that was with much the same sort of combination as the 360.
For a very hard-driven street car(& i'm talking 70-135 mph)they would jail me today,i guess)the small-block just couln't compete.
I used the 440 for 18 yrs & then i went with a 440 Source Stroker.
Oh boy! The smile just couldn't be taken off my face.
Cubes equals Torque,& that rules.
With 2:75 gears & New-Process I do 12:00-12:25@ 117-118mph with a 4000 lb Charger.
As for Turbo's. Great! Thats probably what i'll play with next.
But isn't that just artificially making a small-block think its a big-block.
Kinda kills the argument some of the replys have used.
The stroker has all the parts except for crank,rods & pistons.
It gained one full sec: & 4-5 mph through the 1/4,& gained 5-6 mpg imperial.
Better volumetric efficiency I guess as the shorter rod ratio along with bigger cubes reading all parts as being smaller than what the 440 see's.
Mike in New Zealand My

Re: big block VS small block [Re: Big-Mike] #1035612
07/22/11 10:27 PM
07/22/11 10:27 PM
Joined: May 2008
Posts: 48
New Zealand
B
Big-Mike Offline
member
Big-Mike  Offline
member
B

Joined: May 2008
Posts: 48
New Zealand
Just one more thing too.
A sensible combination of parts at an affordable price, 7000 revs is a sensible ceiling for both big & small blocks for an everyday street car.
My 440 with TRW 2355 six-pac pistons on just polished & shot-peened rods did 10,-Yes! Ten years before it needed a tear-down. Nearly 180'000 miles. And I used to do about 50 1/4 mile drags a year using street tires so that i could sit on 6700-7000 doing wild full-lock to full-lock power slides. Wasn't fast, but who cares,the crowd loved it & so did I.
Thats why Fuel Altered's wer a crowd favourite in their day.
In this country there is a huge following of American Muscle Cars doing cercuit racing as well. Crowds of 10,000 easy,& for a country of 4'500'000 people, thats big.
We even have Mopar National Drags,& over 100 Cars arrive. Awesome!
Mike

Re: big block VS small block [Re: Big-Mike] #1035613
07/23/11 12:00 AM
07/23/11 12:00 AM
Joined: Jun 2010
Posts: 469
Tennessee
S
steeldust Offline
mopar
steeldust  Offline
mopar
S

Joined: Jun 2010
Posts: 469
Tennessee
If you take a big block and it makes the same HP as a small block and the weight is the same the car will run close to the same but i know a small block with a turbo on it and it runs with the big blocks and real close but the more you spend the faster you will go.

Re: big block VS small block [Re: w7smallblock] #1035614
07/23/11 01:12 AM
07/23/11 01:12 AM
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
S
Sport440 Offline
master
Sport440  Offline
master
S

Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Quote:


I agree the big block torque curve will be broader, but I said with gear and converter to match the combo's.


With that said a big block with a 275/60/15 tire with 3.23 shifted at 6000 rpm would fall back to 3500 in second, then back to 6000 and fall back to 4000 in drive. While a small block with the same tire and with 4.10 shifted at 7500 would fall back to 4500 in second and back to 7500 then fall to 5200 in drive. That small block would have 500rpm more pull in 1st-2nd shift and 300rpm more pull in 2nd-drive thats 800 rpm more total. This is figured on both cars with a 727 and stock gear ratio's. This would also be with the converter dead locked which we know don't happen, but still more useable rpm from the small block.





You stated matched optimized combos between the two. A 500 HP BB is not optimized with a 3.23 gear. Further, it wouldnt fall back to 3500 rpm in second with the right vert.


The original question, 500 HP BB 440 vs 500 HP SB 360 in a 3000# car. In this case alone, at this level of performance, the broader torque range of the BB,s extra stroke should win.

The argument of Mechanical advantage with more gear has merit. But you can overgear IMO, Ive found that with my 500HP combo, it likes to dwell a little in first gear with the verts torque multiplications aspects.

Ive tested 3 gears with the same HP. RPM and gear multiplication isnt always the fastest way to the stripe at these 500 hp levels.

Pro stocks 500CI and 10,000 rpm,s sure different story.

Page 10 of 15 1 2 8 9 10 11 12 14 15






Powered by UBB.threads™ PHP Forum Software 7.7.1