Modman Maniac!

No Buschi - the figures on the right axis are "tractive effort" - fairly irrelevant.

My limiter is set to 6800 rpm...but it was still making power when it hit the limiter.

Above 6800 you need good valve springs and extra oil capacity.

Not sure how the XV would go with a Holley....I would say a Holley 750 DP would be close the the ideal single carb for these motors - using a " normal" intake like the XV.