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 4Likes
03-12-2008, 06:09 AM
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CC Member
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Join Date: Sep 2006
Location: Rolla,
MO
Cobra Make, Engine: Superformance, PE 514
Posts: 134
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Not Ranked
Quote:
Originally Posted by fkemmerer
There's no replacement for displacement.
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And:
Nothing exceeds like excess! |
03-08-2008, 12:37 PM
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CC Member
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Join Date: Apr 2006
Location: West Monroe,
LA
Cobra Make, Engine: Joey Manufacturing Inc.
Posts: 343
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Not Ranked
__________________
"Me fodder was King Neptune, me mudder was a mermaid. I was born on the crest of a wave and rocked in the cradle of the deep. Me hair is like hemp, me arms are like spars. When I spits, I spits tar. I'm hard, I am, I is, I are. "
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03-08-2008, 03:43 PM
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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
Stentor,
Not a bad idea, if a Roush is 14,800 how much is aluminium fe? Hopefully the chassis will arrive before next winter, at least I am starting to get sleep again LOL!!
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03-08-2008, 06:06 PM
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CC Member
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Join Date: Dec 2006
Cobra Make, Engine: CSX 4000; Shelby aluminum FE with 58mm IDAs
Posts: 1,116
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Not Ranked
Quote:
Originally Posted by madmaxx
Stentor,
Not a bad idea, if a Roush is 14,800 how much is aluminium fe? Hopefully the chassis will arrive before next winter, at least I am starting to get sleep again LOL!!
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A few months ago Keith Craft was offering 482 ci aluminum FEs for $16,500 (per a post on this site).
You might want to consider this option for $1,700 more over the Roush small block. |
03-12-2008, 01:52 PM
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CC Member
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Join Date: Jan 2005
Location: Rancho Cucamonga,
ca
Cobra Make, Engine: SPF 239
Posts: 820
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Not Ranked
I was going to write a long dissertation praising big blocks while spewing distain for the impotency of the flaccid (thanks David!) small block. But I stopped myself.
I will just say:
Big blocks are better because they are, NENEER, NENEER, NENEER!!
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03-12-2008, 02:59 PM
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Senior Club Cobra Member
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Join Date: Mar 2000
Location: St. Augustine,
FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
Posts: 1,943
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Not Ranked
__________________
Wells's law of engine size: If it matters what gear you're in, the engine's too small!
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04-10-2008, 01:03 PM
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CC Member
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Join Date: Apr 2008
Location: Marietta,
GA
Cobra Make, Engine:
Posts: 2
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Not Ranked
Quote:
Originally Posted by Tom Wells
My tag line gives perspective...
__________________
Wells's law of engine size: If it matters what gear you're in, the engine's too small! |
Yessir, that would be the correct perspective  |
04-15-2008, 11:59 AM
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CC Member
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Join Date: Feb 2002
Location: Gilroy,
CA
Cobra Make, Engine: West Coast Cobra w/ Centrifugally Blown Big Block, Pickles, Onions, on a Sesame Seed Bun.
Posts: 493
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Not Ranked
It's all about what you want.
As far as heat and a big block goes, I can't get mine to run hot enough, and the block is 1/3 filled and the engine is supercharged...so if you're having trouble in that regard I think you have a cooling system deficiency or tune problem. I spent hours on the dyno last saturday with no supplemental cooling fan and a ton of run time and the hottest it ever got was 167deg F.
As far as happy...I'm very happy with my choice. Durable. Makes tremendous power with ease on pump gas even with a very soft tune and low rpm. 600/600 to the tires at 5000rpm having not reached a torque peak yet. If I had to guess, I'll have a torque somewhere around 5500 and peak power somewhere up around 7000...power to burn. And, this is with 16deg total advance and an 11:1 AFR on a 7.8:1 compression supercharged tiny 435" big block pump gas build.
I can only imagine what it's going to make at 12:1 AFR and 24deg advance...which I'll know this Saturday if my fuel injectors arrive. Probably near 700ft-lbs and over 800hp to the tires on pump gas. That looks like a good guess at this point.
The great part is...this is being done with an OEM block and OEM crank, OEM fuel injection, and a 429 based build and a relatively small supercharger (Vortech V7-JT). Just imagine what you could do with a 545" build on a race block with a huge blower. The big valves and big ports of the 385 makes power so much more easily than on a small block platform unless you start looking at exotic parts. It's amazing how much you can do with this platform on a budget. I have less than 8K into my engine; including the EFI and Supercharger.
You'd spend a hell of a lot more to try to duplicate the output on a small block platform. You'd have to start with a race block and a billet crank, then top it with some exotic heads. By that point, you've already come near the price tag of my completed engine assembly. Power per dollar, the 385 is a pretty amazing platform.
That said, I've found that more than 500rwhp in a Cobra is pretty ridiculous; that's near the traction limit starting at freeway speeds. If you have no experience behind the wheel of low-tech cars with big power, I wouldn't recommend more than 400rwhp for the first time out; that's enough to scare most anyone. Mine is basically a half-throttle street car; WOT is reserved for straight line track duty.
B
Last edited by ByronRACE; 04-15-2008 at 12:16 PM..
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03-08-2008, 04:07 PM
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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
If I had the option to go with a 427 BB or a 427 SB same hp...I still am going with the BB
just something to be said for the ole 427 S.O ...the way it was ment to be
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03-08-2008, 08:20 PM
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CC Member
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Join Date: Jul 2000
Location: Shreveport,
LA
Cobra Make, Engine: CSX4083, NOS 427 SOHC, serial number 589. Dyno'd in 1967 at 629HP with single 4v 560 Holley. Now with 4 Webers.
Posts: 295
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Not Ranked
My vote is for the ultimate big block:
Alan Sorkey
Shreveport, LA
The Cammer Cobra
CSX4083 |
03-12-2008, 05:33 PM
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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
Quote:
Originally Posted by Full Throttle Al
My vote is for the ultimate big block:
Alan Sorkey
Shreveport, LA
The Cammer Cobra
CSX4083 |
Every time I see that picture I get a lump in my fur.  |
03-10-2008, 10:51 AM
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CC Member
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Join Date: Dec 2003
Location: Lehigh Valley, PA,
PA
Cobra Make, Engine: Look-a-like cobra POS
Posts: 955
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Not Ranked
Friggin' art, that is...............
__________________
B. Ewing
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03-10-2008, 12:22 PM
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CC Member
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Join Date: Jan 2008
Location: Sacramento, CA,
Posts: 636
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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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the small block is smaller than the big block.... i think...  |
03-10-2008, 12:31 PM
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CC Member
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Join Date: Dec 2003
Location: Lehigh Valley, PA,
PA
Cobra Make, Engine: Look-a-like cobra POS
Posts: 955
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Not Ranked
Come on Bxx1,
Give him some detail.......
OK,
There are small-small blocks, regular small-blocks, and big-small blocks, there are small big-blocks, medium big-blocks and big-big blocks.
..............and then there are REALLY REALLY BIG blocks.
Got it.
__________________
B. Ewing
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03-10-2008, 01:25 PM
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CC Member
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Join Date: Jan 2008
Location: Sacramento, CA,
Posts: 636
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Not Ranked
Quote:
Originally Posted by bret a ewing
Come on Bxx1,
Give him some detail.......
OK,
There are small-small blocks, regular small-blocks, and big-small blocks, there are small big-blocks, medium big-blocks and big-big blocks.
..............and then there are REALLY REALLY BIG blocks.
Got it.
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Got it. would you repeat that again, more slowly please? |
03-10-2008, 06:01 PM
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CC Member
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Join Date: Sep 2006
Location: Rolla,
MO
Cobra Make, Engine: Superformance, PE 514
Posts: 134
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Not Ranked
The main attraction Cobras have for us is the raw, unadulterated power of a monster motor in a small car. Our big block was built to have respectable HP and torque numbers without being out on the ragged mechanical edge. If those numbers can be reliably obtained in a lighter package, go for it if that's your vision of the "perfect" car.
Even with the horsepower and torque available to us, there are times I'd sure like to have more.
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03-10-2008, 06:26 PM
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CC Member
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Join Date: May 2005
Location: Riverside,
CA
Cobra Make, Engine: Cutting Edge, Boss 429
Posts: 377
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Not Ranked
BDHE,
That really about sums it up.
It should be about "whatever flips your switch".
Big cubes - Big torque - Big block = |
03-11-2008, 08:09 AM
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CC Member
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Join Date: Dec 2003
Location: Lehigh Valley, PA,
PA
Cobra Make, Engine: Look-a-like cobra POS
Posts: 955
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Not Ranked
Quote:
Originally Posted by Bxx1
Got it. would you repeat that again, more slowly please? |
 .........
__________________
B. Ewing
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03-12-2008, 07:20 PM
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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
"Every time I see that picture I get a lump in my fur":
Jesusuuus f((((( Chrisjlj that was nasty!!! LOL!!
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03-12-2008, 09:56 PM
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CC Member
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Join Date: Apr 1999
Location: cleveland,
OH
Cobra Make, Engine: CSX4000, 427
Posts: 1,999
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Not Ranked
Quote:
Originally Posted by boyd henderson
trying to decide small block or big block? --any happy big blocks drivers
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I don;t know of one.
Quote:
Originally Posted by boyd henderson
thanks for all the input ,i guess i will be happy with either.you cant make a bad choice
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You can make a bad choice on who builds you the motor.
__________________
"After jumping into an early lead, Miles pitted for no reason. He let the entire field go by before re-entering the race. The crowd was jumping up and down as he stunned the Chevrolet drivers by easily passing the entire field to finish second behind MacDonald's other team Cobra. The Corvette people were completely demoralized."
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