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Discussion Starter · #1 ·
Just thinking out loud here...
If I swapped out my f/t hydraulic Ultradyne 280/288 adv. 223/231 @.050 .525/.550 112 LSA for the Ultradyne f/t hydraulic 288/296 adv. 231/239 @.050 .550/.575 110 LSA what MPH or HP gain could I reasonably expect?
Current MPH is 107.9 to 108 MPH thru the exhaust.

Thanks in advance
 

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I dont know if this will help you at all, I had the same cam (UD 280/288)
The only change to the motor was installing a custom ground Comp XE Solid.
My current cam is 273/279 236,[email protected] .570,.580 lift on a 107 LSA
I changed my converter and added 4.10 gears.
Previous best with the UD cam and 3.31 gears was a 12.81,(about 1.82 avg.60ft) running about 107 to 106.9/8 consistently. New bests are in my signature. I know with the UD cam and the 3.31 gears I wasnt crossing the stripe anywhere near peak HP. Maybe the change to the solid was worth 30 HP? I dont know. I know I lowered my ET significantly by getting that 60ft number down.
 
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