Recent content by Whipple Charged

Correct, but I said with the proper air inlet system...... The stock air box, with new filters is EXTREMELY restrictive to the positive displacement SC. At 20psi with a 4.0L, the right air inlet system is worth well over 50hp. Since the TT doesn't have the inlet restrictions, its not apples for...

Correct, but I said with the proper air inlet system...... The stock air box, with new filters is EXTREMELY restrictive to the positive displacement SC. At 20psi with a 4.0L, the right air inlet system is worth well over 50hp. Since the TT doesn't have the inlet restrictions, its not apples for...

Give me some info like boost, engine rpm and I'll get you some info.

Get me the serial number from the top of the compressor/bearing plate.

A beautiful install at Fischer Motorsports with a FM custom air intake system....

275ax with elliptical TB.

Turbo's are not "free HP". Back pressure takes energy too. At 20psi, there is only a slight difference. Many don't realize how restrictive the stock air box is. Remove that and the proper SC vs TT is rather close. Now at 30 and up psi, there is a significant difference as the power consumptions...

Closer to peak efficiency through the entire rpm range. If your just chasing HP, then you want the compressor to be as close to the "sweet spot" near peak rpm. If your chasing torque, you want the smallest compressor as it hits sweet spot early but sacrifices HP. But in general, keeping SC...

3.3L and 4.0L are CARB legal.

Do you mean 4.0L vs 4.5L? That answer is really complicated. At the same airflow, the larger compressor is slightly less but the 4.5L has more capacity so per rev it takes more. Its always best to fit the SC that best fits the airflow required. The 4.5 is by far our best compressor. Bigger...

From our records, very few. Yes 4.0 is better, 4.5 is even better yet.

Customer asked if you had a failure in a 4.0, your reply said 2. I know of only 1 4.0 failure and it wasn't yours, hence my statement.

Ed, you purchased a 3.4L from us, not a 4.0L. Not sure if you did some swapping with someone or not.

I addressed that on page 4 of this thread. 10,000 is not even remotely accurate. As for 3.3 vs 3.4. The 3.3 was from Lysholm, which we distributed throughout North America. When we built our own, we modified the rotor profile, housing, etc and got it 3.4L.

We only know by serial number, there are no identifying marks on the sc. If your discussing a ford GT, then there was never a 3.3, only a 3.4. Both gen 1 and 2 are 3.4L. Gen 2 was higher flowing then gen 1. Gen 3 is slightly higher flow as gen 2 with new shaft/bearing and internal SC housing...