11.96 on pump gas, what about race gas?

[JeffG]

take Red Regal T's advice....shoot for mid 11's and stay there...particularly if it is your only car.......you'll have plenty of downtime at that power level

Amen to that..........

 

[Devil Car]

I don't believe cubes is the biggest factor. Hell, how is it an EVO can make 600+ whp with 2.0 & 2.3 liters(aftermarket) with a GT-35R which are the same wheels in the PT61? That may not be 800 hp, but that's over 700 at the engine with a 1/3 less cubes. I have far too many dyno pulls on my computer from these 4 cylinders making ridiculous power with similar size turbos and 1/3 less cubes. I believe it's more breathing related.

Well the big factor relies on the fact that HP is related to the product of torque and RPM (HP is approximately equal to Torque (lb-ft)*RPM/5252). Those little DOHC engines rev a lot higher than our pushrod Buicks. Therefore, they have the potential to make more horsepower even while making less torque.