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CC Advertisers
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09-07-2011, 07:14 PM
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CC Member
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Join Date: Apr 2006
Location: Los Angeles,
ca
Cobra Make, Engine: Hurricane Motorsports, 427w
Posts: 439
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Not Ranked
show me yours and I'll show you mine
Displacement: 427
Block Type:Dart iron
Compression Ratio:10.2
Caburetor Size/EFI: 750
Peak Crank HP @ RPM:550
Peak Torque @ RPM:560
Other: ceramic coated muffler bearings
Matt
__________________
Hurricane Motorsports #1053; 427w
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09-07-2011, 07:21 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
How much are you wanting? In terms of "streetable" engines that run on pump gas, have rpm ranges that are somewhat "sane", etc., then 600-625hp isn't that hard to achieve with the normal 427-460 sized engine.
If you want to get into some higher rpms and higher compression engines, then basically open the checkbook and pick a number.
I have several Windsor combinations that will hit over 600hp without missing a beat....all in by 6500 and running on pump gas.
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09-07-2011, 08:16 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
Displacement:302 / 354
Block Type: 1996 5.0 Ford
Compression Ratio:10.67
Caburetor Size/EFI: EFI 80MM
Peak Crank HP @ RPM: 402 rear wheel hp @ 5600
Peak Torque @ RPM:416 rear wheel tq @ 4500
Other: Anything else "trick" you have above and beyond a street performance motor. Great exhaust system, Keith Craft Brodix heads and KC Comp custom cam.
Dwight
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
Last edited by Dwight; 09-07-2011 at 08:17 PM..
Reason: correction
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09-07-2011, 09:46 PM
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CC Member
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Join Date: Apr 2011
Posts: 1,092
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Not Ranked
Thanks guys ...
Matt, nice numbers so must be a solid build with a great VE.
blykins, looking for 400+ at the rear wheel in a reliable "no fuss" motor. It's already built and I will dyno when car & motor are delivered. I'm pretty sure I'll get 400+ RWHP, I was just curious on what SBF owners typically were getting.
Dwight, also very nice numbers for a 354 and VE near 1 I'm sure.
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09-08-2011, 02:45 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
Quote:
Originally Posted by AL427SBF
Thanks guys ...
Matt, nice numbers so must be a solid build with a great VE.
blykins, looking for 400+ at the rear wheel in a reliable "no fuss" motor. It's already built and I will dyno when car & motor are delivered. I'm pretty sure I'll get 400+ RWHP, I was just curious on what SBF owners typically were getting.
Dwight, also very nice numbers for a 354 and VE near 1 I'm sure.
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What's your engine Al? Always exciting to get a new toy....
Most engines will be over 100% VE these days.... |
09-08-2011, 04:30 AM
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CC Member
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Join Date: Apr 2011
Posts: 1,092
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Not Ranked
Yes, it's an aluminum DART 351W/427 block "naturally aspirated" as they say. Brett's 427 S/B Cobra Motor 2011
Bearing clearances are tight @ <.0025 so I'm hoping for a VE around 100%. I'll probably re-do that air cleaner cover, didn't come out quite as expected, a tad too loud when all is said and done lol.
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09-08-2011, 04:35 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
For a street engine, the bearing clearances are spot on. I usually shoot for between .002-.0025". You have to remember that the Dart blocks use Cleveland main sizes (2.750") and the cranks use SBC rod journals (2.100"). Very small compared to the standard 3.000" main sizes and 2.311" journal sizes of a factory 351W.
Volumetric efficiency mainly has to do with how much air can be shoved into the cylinders. With a modern head/cam package, 100% is certainly achievable.
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09-08-2011, 04:38 AM
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Senior Club Cobra Member
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Join Date: Jan 1999
Location: MARKSVILLE,LA.,,
Posts: 3,235
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Not Ranked
Quote:
Originally Posted by AL427SBF
Yes, it's an aluminum DART 351W/427 block "naturally aspirated" as they say. Brett's 427 S/B Cobra Motor 2011
Bearing clearances are tight @ <.0025 so I'm hoping for a VE around 100%. I'll probably re-do that air cleaner cover, didn't come out quite as expected, a tad too loud when all is said and done lol.
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You may want to change out your crankshaft pulley,you have underdrive pulleys on it now and may have overheating issues.....For a street car, your crank pulley should be at least the same diameter as your water pump pulley,if not slightly larger.........
BTW: looks like a really nice package you have there..........
David
__________________
DAVID GAGNARD
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09-07-2011, 09:51 PM
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CC Member
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Join Date: Mar 2009
Cobra Make, Engine: FFR
Posts: 388
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Not Ranked
331 ci
Dart block
9.0 comp
60 lb injectors
563 rwhp @5650 and 13.6 lbs boost. The video in my sig was 2 lbs higher boost.
586 rwtq @4600 (this may be off because they had to ease into the throttle 2nd to wheel spin at lower rpm, my previous turbos were 740 rwtq at 3000 rpm at this lower boost level).
Idles at 650 rpm with wonderful street manners and 20 mpg on the hwy.
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