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Old 04-13-2016, 09:01 AM
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moore_rb moore_rb is offline
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Cobra Make, Engine: All original, with Chevy engine since 1964
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Quote:
Originally Posted by blykins View Post
Do some research on valve angles, valve diameters, bore spacing, etc. An LS head will bolt directly to a Windsor block. Don't have time to get into a back and forth on it.....
This is not accurate - It's true that GM LS style engines share bore centerlines with Ford Windsors, but they also share bore centerlines with GenI GM small blocks.

They will not "bolt directly" to a Ford Windsor. They can be made to bolt on by re-machining and re-threading the corner bolts in the Windsor block, but that accomplishes nothing, unless you designed a custom cam and pushrods to activate the valves.

Quote:
Originally Posted by blykins View Post
Ford guys will be Ford guys and Chevy guys will be Chevy guys.
Very true, and I don't begrudge anybody for brand loyalty (We all know the best, most wicked sounding engine for a Cobra would be a Mopar 426 Hemi anyway, right..?)

Quote:
Originally Posted by blykins View Post
I personally don't understand what the big deal is about the LS motor. Exhaust side of the head is so inefficient that the cam needs about 30 degrees of duration split to crutch it.
This is also technically inaccurate - The excess exhaust duration in stock GM LS engines is to improve the engine's "natural EGR" abilities. It has nothing to do with exhaust scavenging or HP - LS racing engines all run tighter cam patterns than stock street engines

Quote:
Originally Posted by blykins View Post
New Corvette is rated at 460 hp with 378 cubic inches. What's so outstanding about that?
Haha - I'll let those numbers speak for themselves - 460 NET HP from a naturally aspirated, 378 Cubic inch engine.

If that engine was tested and gross-rated the way they rated engines back in the 60's you'd be talking about 550+ HP- All from an engine that has also been durability tested, and EPA certified, to be US Federal emissions compliant for over 100,000 service miles (and also gets well over 20 MPG on the highway).

You show me Ford's equivalent NA engine, and I'll go crawl back under my rock.

Quote:
Originally Posted by blykins View Post
to make a stupid statement like it's a better engine than anything that Ford ever had is well........a stupid statement.
Show me the evidence.
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Last edited by moore_rb; 04-13-2016 at 09:01 AM.. Reason: fixed typos
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