new tf 2v heads

I think you guys are really underestimating the stock crank. Yes, I'll agree that the rods and pistons aren't much good for forced induction purposes, but they'll hold up quite well to most N/A horsepower levels. As far as the crank goes, you guys need to keep in mind....when the mod motors were released back in the early 90's....nobody was even coming close to the power levels they are with them now. Why drive up the cost of the vehicle by beefing up the engine when most people were struggling to make 300hp with them. Hell....even the late '90's and the first couple years of the early millennia a 600rwhp street Mustang was practically unheard of.

As it stands, although the rods and pistons are weaker, the crank and block are much, much tougher with the Mod Motor than that of the previous 302W.....and I never heard anyone complain about the way their bottom end was put together? :shrug:

Truth be told…the Forged cranks are nice, but waaaay overkill for 95% of the engine packages out there. Even though the nodular iron crank is said to be rated for 600hp, when was the last time you ever heard one going at any power level...especially in a car designated for street duty? Even for aftermarket purposes.....what good is stuffing your engine with expensive internal components that’ll take 1,200+hp when most engine builders are likely to never push their combo’s beyond the 400hp level.....even with a blower? :shrug:

It reminds me of the old days when the hot rod guys used to run high rise single plane, dual carb intakes and lumpy cams with stock heads, exhaust manifolds and 2” exhaust system. They looked cool and were great for bragging rights, but for the most part.....impractical.
 
which i understand where you are coming from i just think the money could have been spent better somewhere else than building multiple cranks for the same motor is all im sayin.
 
which i understand where you are coming from i just think the money could have been spent better somewhere else than building multiple cranks for the same motor is all im sayin.


Not necessarily the same engine. The steel cranks are reserved for the manual equipped 4V engines. The cast cranks are reserved for the 2V's and automatic equipped 4V's. It was still more cost effective to manufacture the needed amount of steel cranks for one model and manufacture another batch of nodular iron cranks for another, than it would have been to manufacture steel cranks across the board for all of them. Although I’d be guessing as to what they cost to manufacture, when selling them outright, the forged steel crank cost twice as much as the nodular iron unit. When you factory in how many hundreds of thousands of modular engines that have been produced in the last 18-years.....its pretty clear Ford has saved a LOT of money by choosing to run two different types of crankshaft in their vehicles.

Also, it’s not horsepower that generally causes them to fail, its sustained RPM that does. The automatic equipped 4V's and 2V engines have limited RPM ranges in comparison to the manual equipped 4V's, so the need for a crank to run in the sustained high RPM ranges wasn't a necessity.