This is the question of the day .... everyday

anyway (no pun intended) I would like to hear opinions and any numbers if available to weigh the pros and cons of a built 4v vs built 2v in a turbo charged application... what are the limits of each? are there any real differences that can be solved with a few more pounds of boost?

Consider A HCI 2v, stage 3 heads and blower cam vs pretty much stock 4v heads with new springs and valves
Forged everything on both accounts - so they both can spin 8k rpm, and lets say the power goal is 700 rwhp on BOTH cars, so BOTH cars are tuned to 700 rwhp... i dont know what the torque differences would be if any (you can explain your theory)

Now also consider this question will all else being equal - both cars running t-56's or what have you, both cars with 3.73 gears, same suspensions - only difference being the motor type 4v vs 2v... what is the outcome?
4V>2v?
2v>4v?
Drivers race?

please discuss

 

03-04 4 v cobras are good for 1000hp stock, where as no stock 2v is good for that much!

 

i would think itseasier to achieve higher numbers with a 4v motor? or is bieng forged the only real advantage?

 

The 4v lower ends have been shooting out some insane numbers, the big advantage on the rotating assembly is the crankshaft seated deeper into the block, it lends itself to less flex under load. However what you do have to understand is that these motors are mass produced and are not always the most consistent. If you go for an aftermarket motor the 4v builders out there have been doing a great job of correcting the weak points of the motor and selling a product that is worthy of huge numbers.

I have seen the 2v modular motor turn 675rwhp (on a stock bottom end), and 4v's bigger than that 700+rwhp, of course at that reat no motor is going to stay together forever, no matter how good you prep

 

well again some of you arnt reading the question properly, its not about the power. yea duha 4v will always be able to make fore power - the question is if power output is the same, then what.... does the 2 or 4v come into its band more quickly? who has an advantage and why?

 

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