572 CID Big Block Ford Kaase P51 Head 900 HP @ 7000 rpm all motor

[madtownmadman]

Thats seems like a lot of cubes, with a shitload of compression to make just 900 hp.

[pwkid]

@madtownmadman lol how else could you pull that off N/A

[madtownmadman]

@pwkid More RPM and Kaase's Boss '9 heads!

[FutureMarine246]

@madtownmadman show me a 4 banger that can do that without a turbo

[jamesandrewjohnson]

It wouldn't let me post the links so I replcaed the . with spaces.

[Y0B0YCHRIS]

@sloscort not if their the same horse power with a turbo/ supercharger and nos

[robbedoes1985]

#1 say if you'd compare this engine to a 900 hp 350 ci (maybe NOS'd supercharged or turbo'd) how much weight difference would you have between the fully prepped engines? #2 what would be the best weight efficient USA v8 to get 700-900 hp at max and around 20.000 dollar? (incl all brands and block materials alu for example).

[slowscort]

@robbedoes1985 that motor would kill a 350 doesn't matter what has been done to it 350 is gay piece of shit

[jamesandrewjohnson]

@robbedoes1985 You know it really doesn't work that way. For a 350 to make 900 hp it'll take some high revving, with or without a supercharger, turbocharger, or nitrous oxide. The 573 big block Ford (I know it says 572 but the math is off) will have a lot more torque than the 350 and torque is what gives it the ability to overcome weight. Because of the torque difference even if the 350 makes the same power at the same RPM the 573 will accelerate quicker because of the torque.

[jamesandrewjohnson]

@robbedoes1985 Not to mention a factory 460 block can and has handled 900 hp, and with 4 bolt caps and ARP studs can easily handle over 1,000 hp. Also, if you're really lucky, some blocks can have enough wall to go to a 4.5" bore on a $50 junkyard block. It's not likely, although almost every junkyard 460 block can handle a 4.44" bore, making a 557. You'll need that $20K budget to build a 900 hp 350 most likely, however it should take you well under $10K for a 900 hp N/A 460.

[robbedoes1985]

@jamesandrewjohnson Nice thanks your comments make a lot of sense.If you are interested this is my problem: If you have a jeep with slipping tires on any given gravel/sand hill, what will get the jeep up the hill, a light low torque engine or a heavy high torque engine? and what if its a rock hill or mud?

[jamesandrewjohnson]

@robbedoes1985 Well that's a little different, for a lot of sand or gravel you usually want a high revving motor whether it has low end torque or not, but for rocks and mud you'll want plenty of torque because on rocks you need low end torque and really low speeds to crawl up them and in mud it takes torque to get through anything really thick and/or deep.

[robbedoes1985]

@jamesandrewjohnson so for a nice allround performing jeep an alu chevy smallblock or a ford 4.6L with a compressor would nice and light to rev high and produce acceptable low end torque, right?

[jamesandrewjohnson]

@robbedoes1985 Oh yeah, for sure. But if you have money to build a high revving motor there's a few key areas you should turn your attention to. Firstly, you'll want all ARP bolts in the rotating assembly and ARP studs (important that you use studs and not bolts) for the main caps and heads. Secondly, you'll want forged/billet aluminum pistons, chromoly wrist pins, and steel H beam rods. Thirdly, you'll want a valvetrain that's up to par. (see next comment)

[jamesandrewjohnson]

@robbedoes1985 For the valvetrain you'll want to run a good high revving cam. summitracing com/parts/CRO-62801-2/ This is a good set of cams for the 4.6L. summitracing com/parts/CCA-CL12-771-8/ Here's a good cam for the Chevy. Also you'll want some stiff valvesprings for high RPMs. Look for a set of springs on Summit Racing with a spring rate of around 300 in/lbs for the Ford and 450 in/lbs for the Chevy. Good luck if you decide to build one of these!

[jamesandrewjohnson]

Also if you want a good middle ground, a 408 stroker is a good idea. It can make some decent torque and still rev safely about 7,000-8,000 RPM with the types of parts I suggested. You can build a 408 stroker from a Ford 351 Cleveland/Windsor, a 350 Chevy, or a 340/360 Dodge. All of these engines have a tall enough deck height to do it, and all you need to do is buy a stroker kit intended for a 408 and bore the engine .030" over. If you do a Ford, use the Cleveland. The block is a lot stronger.

[jamesandrewjohnson]

@robbedoes1985 And not to ramble, but when you say a compressor do you mean a supercharger? Because if you add a roots supercharger like a 6-71 or 8-71 Weiand, that will dramatically increase low end torque. In fact, what I would go with is a 408 Cleveland stroker with H beam rods, forged aluminum gas ported pistons, a street/strip solid roller cam, an 8-71 Weiand blower, and all ARP bolts and studs. That should handle some good RPM and still make tons of torque.

[zjm92]

Beautiful motor. Would love to put that on my lawnmower. Haha jk, good video!