MM& FF did an article on this a few years back and dynoed a lightly modded mustang with both unequal and equal shortys and the equal shortys had 2 hp more that the unequal and said they were not woth the extra hassels but did say that the story might be different on a highly modded mustang. I would and did go with the long tube headers.
1 5/8" on a lightly modded mustang and 1 3/4" on a heavy modded, nitrous injected, or blown mustang.
__________________
James Cox
RHC Member #44
nochevy@hotmail.com
1991 Mustang LX
Dart iron eagle block, 4340 28oz 347 crank, 4340 h-beam rods, probe ultra light pistons canfield heads “race ported by Brent Frazier”, solid roller cam and lifters “custom grind”, kooks 1 7/8" race headers, and much more.
Engine built by Brent Frazier.
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