When do you need 4V heads

[billfisher]

look in the dyno sticky it's in there. you will see how the the stock cam timing affects it.

 

[jivepepper]

4V'S ARE CHEATERS!!

 

[Stan Weiss]

look in the dyno sticky it's in there. you will see how the the stock cam timing affects it.

Just one question. I see in one of your post that you have your redline set at 5500. Why did the dyno operator only go to 5000? I wanted to see how bad it dropped off up there.

 

[hotmustang331]

SOOOOO what is your take here Stan?
So far the only person you have quoted is Bill....and it hasnt even really been about 2V vs 4V.

Comeon, lets bench race here and get to the point of the thread....this isnt a social club!

 

[Stan Weiss]

My 2V is stock and I have never built a 2v. I have built engines GM and chrysler but that was some years ago. So all I am doing is guessing and all guesses will be flywheel HP with 4.6l displacement and the short block will take what ever HP is generated. Looking at some of the flow numbers from companies Patriot, Total engine airflow, CAPA performance, BH Performance, Fox Lake, Steen Racing
Using no more than .600 lift N/A 450 HP Street / Strip
Using any lift N/A 525 HP Strip
FI 3.0 Density Ratio 1200 HP - I will leave how you get the Density Ratio up to the individual.
N2O with sheet metal intake mutli stage 1050 HP