Not Ranked
I ran a Barry Grant modified 650 DP Holley (not a Demon) for many years on my 289. About 5 years ago I installed 48 IDA's and went throught the normal tuning process.
Speaking first hand the flexability of the motor was greatly increased and seat of the pants torque really stepped up. It is possible that the absolute top end HP might favor the 4bbl but the increased flexability and torque are what make the car squirt from corner to corner. My guess is that is why they were installed by Shelby in the first place. As you all know, in Road Racing the engine spends 95% of its time between or in corners not winding out at or near its redline so the flexability would win out.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
|