Quote:
Originally posted by BLOCKER
Here is a thought, why don't we build an I-6 stang, then go race it, I am sure with a little tuning, balancing and porting we could bulid a real "neat" and different mustang.. just a thought. then people couldn't say "you gotta a V8 ya better beat me"
just a thought
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If you stuffed in a 4.9L straight six (which i know you can do) it would be worth it, but the 140/170/200/250 straight sixes aren't worth the time and money. You would have to be able to fabricate a new intake manifold (instead of "intake log" welded to cylinder head) and flow balance it to even have a chance to make 1 hp/cubic inch naturally aspirated, let alone more hp....although that is a novel idea.
With 200 cubic inches and 88 net horsepower, those early 80's straight sixes aren't exactly power houses. I think the 250 six had a little over 100 horsepower, though....which is almost enough to squeek the tires under a redline clutch drop 
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2005 Suzuki Hayabusa GSX1300-R
1980 Ford Thunderbird - 255 V8
ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain
hi-po Mack Truck hood emblem 
1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc.
Sold 02/06/04 
1989 Mustang GT ET: 13.304@102.29 mph (5-24-03)
Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)
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