572 Hemi in 69 Charger

[chrint]

Thinking of putting 572 Hemi in 1969 RT/SE Charger, pros and cons?
Will it fit?
Do i need to modify anything ?
What headers are best for application ?
Hood clearance with 2x4 carb set up?
And anything else anyone has encountered .
Car will be manly street driven and as original looking in appearance as possible .
Just like the look of a Hemi and want around the 700 trq mark, car is factory  727 Auto car.
Looking at FHO engine choice .

[G-man]

If you leave everything factory and just drop the engine in, you will end up with a completely destroyed vehicle. That engine will twist and destroy everything you got, gearbox included.

You have to build the whole car around that motor for it to work safely.

[68X426]

What he said.  You have to modify everything if you want the car to last.

I don't understand your poll choices. 

[Troy]

A 572 has the same external dimensions as the stock 426 Hemi. There shouldn't be any fitment issues with stock type parts (dual 4bbl intake included). You will be limited on the brake master cylinder/booster and wiper motor just like the factory cars. With that much more power over the stock motor you'll want to beef up the transmission. Probably rear axle too. Or you'll be rebuilding both soon after you get it on the road. Your choice. If the tires don't hook you really don't need anything else. However... factory R/Ts got heavy duty suspension and brakes to deal with the extra power and weight. Highly recommended! If you do manage to get traction, you'll at least want the factory Hemi frame modifications (torque boxes specifically) with the addition of some subframe connectors or the car body will twist. Basically, it doesn't matter if you're choosing a Hemi or anything else with that much power - you should build the whole car as a package. The Hemi just has a few "challenges" due to the physical size - but the factory sorted them all out already.

Troy

[Eldovert]

A loose rule of thumb is spend as much on the rest of the drive train as you spent on the engine.

[Kern Dog]

The dose of reality must have scared the OP off somewhere.

[G-man]

 

[6pkrtse]

I have a 853 H.P. 528" Hemi in my 70' Challenger & it dropped right in. As stated above dimensionally it is no larger than a stock 426 Hemi other than the taller valve covers to clear roller rockers.