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 4Likes
03-07-2008, 01:38 AM
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CC Member
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Join Date: Mar 2008
Cobra Make, Engine: bennett
Posts: 15
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Not Ranked
small block vs. big block in a cobra
trying to decide small block or big block? any advice ? pros and cons .any happy big blocks drivers.i am building a classic roadster cobra.
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03-07-2008, 02:51 AM
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CC Member
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Join Date: Aug 2002
Location: Dacula, (Atlanta),
GA
Cobra Make, Engine: Unique 427 SC, Southern Automotive 427W Stroker
Posts: 1,649
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Not Ranked
You HAD to ask!
__________________
After a good hard ride.....oil pressure is over 50, temp is below 190, she idles and no new dents. LIFE IS GOOD!
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03-07-2008, 04:16 AM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,029
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Not Ranked
I'm a very happy big block owner.
I have always preferred a big block due to the reason that it's relatively cheap and easy to get more hp out of one. Regardless of what you do to a small block, it will always be subjected to higher stresses at the same hp levels as a big block. That's just a plain and simple fact.
The real question you have to ask yourself is what do you plan on doing with the car. Determine that, and then pick an engine that fits your use.
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03-07-2008, 04:21 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Shasta Lake,
CA
Cobra Make, Engine:
Posts: 26,612
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Not Ranked
What Silverback said. I have had both and they each had advantages and disadvantages. I still liked the small block stroker for road courses and it would lap as fast as the big blocks. The big block gives you the power and torque normally at a lower RPM range and is great for cruising plus the sound is just deeper. And if you are going to just go in a straight line, I think they call it drag racing, the Big Block is the way to go.
You could also do some searching on this topic as there must be at least 3,000 posts arguing the pros and cons of each.
Ron  |
03-07-2008, 04:27 AM
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CC Member
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Join Date: Jun 2004
Location: Amarillo,
TX
Cobra Make, Engine: Scratch build......a little every day.
Posts: 563
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Not Ranked
Just pop the hood of any BIG BLOCK Cobra and your question will be answered. It belongs there.
It's funny that this question has not been addressed before. 
__________________
55 mph is unsafe at any speed. Huh?
Last edited by elgecko; 03-07-2008 at 04:29 AM..
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03-07-2008, 05:08 AM
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CC Member
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Join Date: Feb 2006
Location: Glenwood Landing or Southampton,
NY
Cobra Make, Engine: Superformance, FRP460 Big Block
Posts: 975
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Not Ranked
Oh believe me, this has been addressed many times...with no real valid conclusions either way 
I've owned both, I prefer BB for fore/aft G-forces, SB for L/R G-forces.
BB - love the rumble, hate the steering.
SB - loved the nimble handling, hated trying to make it look big.
Shall I make popcorn now?
__________________
Ray
New York
SPF#1052 11mpg
CAV GT40 MONO29 9mpg
'94 35th Anniversary Rover Mini Cooper 32mpg
'01 MB CL600 V12 18mpg
'08 Volvo S80 18mpg
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03-07-2008, 06:44 AM
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CC Member
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Join Date: Aug 2006
Location: Jersey Shore,
NJ
Cobra Make, Engine: Superformance SPF#2572, 427 S/O 2X4
Posts: 379
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Not Ranked
If you go small block, you will always wonder "what if". If you go big block, there will never be any regrets.
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Peace through superior firepower...or is it horsepower? Either way, more is always better!
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03-07-2008, 07:19 AM
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CC Member
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Join Date: Jun 2005
Cobra Make, Engine:
Posts: 3,077
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Not Ranked
Unless you are buying an original you are getting a replica which takes advantage of many of the automotive advances through the years. Why not take advantage on engine technology and get a stroked 351 to 4??. Now you have big block performance plus the advantages of a lighter engine.
I have been in and heard both. Unless they are parked next to each other it is hard to dicern the big block. I also did not like the low ground clearance as a result of the big block bell housing. Just my thoughts.
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03-07-2008, 07:35 AM
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CC Member
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Join Date: Apr 2003
Location: Vero Beach,
FL
Cobra Make, Engine: COX 6111 - '66 "AC 289 Sports."
Posts: 1,572
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Not Ranked
You might want to simply ask yourself if you would prefer a sports car or a hot rod. No disrespect to either.
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Ned Scudder
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03-07-2008, 08:16 AM
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CC Member
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Join Date: Mar 2003
Location: Kansas City,
MO
Cobra Make, Engine: Unique Motorcars 289 FIA
Posts: 711
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Not Ranked
No way! I am in on page 1 |
03-07-2008, 08:24 AM
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CC Member
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Join Date: Feb 2007
Location: Valencia,
CA
Cobra Make, Engine: BDR #89, KCR aluminum 427 windsor
Posts: 322
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Not Ranked
I've got a 427 Windsor stroker. Has the Dart aluminum block, so is very stout AND light weight. I think I get the best of both worlds... big block power (612 hp/615 tq) with small block weight (car weighs 2240 lbs). Am surprised no one has mentioned a few other advantages of the small block... has more room to "breathe" in the engine compartment & you have better accessability during maintenance/service.
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R. Smith
Santa Clarita, CA
BDR #89- KCR aluminum 427 windsor, TKO-600
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03-07-2008, 08:27 AM
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Senior Club Cobra Member
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Join Date: Oct 2006
Location: Orange Park,
FL.
Cobra Make, Engine: n/a
Posts: 1,596
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Not Ranked
Big block in a big block car, and small block in a small block car......SIMPLE. Which body do you want? That will answer your question.......
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20mph is not fast, unless you are doing it in a 3/2, 1000sq. ft. house on 10 ft. waves! 
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03-07-2008, 08:30 AM
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CC Member
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Join Date: Jan 2003
Location: Atlanta,
GA
Cobra Make, Engine: CAV GT40 with 331 KC
Posts: 2,187
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Not Ranked
Do a search.
You may then want to ask if the 4000 series cars are real.
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03-07-2008, 08:47 AM
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CC Member
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Join Date: May 2007
Location: Goshen,
ny
Cobra Make, Engine: Gary Edwards Racing 460
Posts: 444
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Not Ranked
Huh, I didnt know there was an option. Cobras get a big block!! Nuff said.
__________________
Its not the will to win that matters....Everyone has that. Its the will to prepare to win that matters.
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03-07-2008, 01:13 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,592
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Not Ranked
Quote:
Originally Posted by PatBuckley
Do a search.
You may then want to ask if the 4000 series cars are real.
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03-07-2008, 09:19 PM
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CC Member
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Join Date: Sep 2007
Cobra Make, Engine: Kirkham #492/ 427/482 Keith Craft. Simple, Clean.
Posts: 114
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Not Ranked
Big.
I have a 427/482 KC engine. It is big, but respectful. A pitt bull. Just the way I want it.
Not that it matters....and I acknowledge I am a rookie (no stripes). That said, even though I have just 100 miles on the car, I have been asked TIME AND TIME AGAIN, 'do you have a big bloc 427' or 'do you have a sideoiler'. Hell, I did not know it at the time I ordered it , but is sure feels great to open the hood and say 'yes'.
That and the growl is great.
al
__________________
VNMS 65 
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03-08-2008, 04:05 AM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,291
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Not Ranked
My Pond 482 S/O weighs about the same as a cast iron 302.. No weight penalty for a big block there.. 'cept if it's compared to an aluminum block/head 302/Windsor. 
__________________
Too many toys?? never!
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03-08-2008, 04:27 AM
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CC Member
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Join Date: Dec 2004
Location: Prince Frederick,
MD
Cobra Make, Engine: Unique 427 S/C 427 FE S.O. 484 cu in
Posts: 952
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Not Ranked
I have not driven a stroked Windsor yet that feels like a big block and my cast iron block handles great. |
03-07-2008, 08:44 AM
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Senior Club Cobra Member
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Join Date: Oct 2006
Location: Claremore,
OK
Cobra Make, Engine: RUCC, 289 c.i. with a T-5 "Living the Cobra Experience"
Posts: 994
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Not Ranked
Quote:
Originally Posted by boyd henderson
trying to decide small block or big block? any advice ? pros and cons .any happy big blocks drivers.i am building a classic roadster cobra.
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I went with a small block, I figured that I wouldn't be able to use everything a 600 hp big block has to offer on the streets. But thats just me.
I'm sure a small block Cobra's power to weight ratio will be more than adequate for the street.
Most importantly, it's your car, build it for you, no one else. 
Randy
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Juggernaut
"Living the Cobra Experience"
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03-07-2008, 08:56 AM
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CC Member
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Join Date: Jun 2006
Location: Calgary,
AB
Cobra Make, Engine: Butler Racing/427 side oiler
Posts: 371
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Not Ranked
never heard anyone say " damm I wish I went with the small block" yet
427 S/O is there any other |
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