Is this True??

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Is this True??

Post  Dark Horse of Apocalypse on August 8th 2014, 11:08 am

I know that what you read on the internet must be taken with the appropriate grain(or shaker given some sites Shocked Rolling Eyes ), but I read the other day a stock block 429-460 BBF is good for about 750-850 HP(over bores within reason).

This sound reasonable to you folks? What about the guys running N2O with Cheater Plates & or Foggers on stock blocks are they playing Russian Roulette with engines?
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Re: Is this True??

Post  Frank Merkl on August 8th 2014, 11:21 am

if the tune is good they will take more but too much timing and you get into detonation and the main caps start walking around
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Re: Is this True??

Post  cool40 on August 8th 2014, 11:39 am

Very true! My 526 is unfilled .080 over 2 bolt d0ve block.
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Re: Is this True??

Post  dfree383 on August 8th 2014, 11:49 am

I've done 900+ on them, but was experiencing cap walk. Currently have a 800 hp 466 heading for my 1983 back half car, with a stock block and crank, tore it down and inspected everything after a few passes and a lengthy dyno thrash and no cap noticed..... But the rod bearings where not nice looking.
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Re: Is this True??

Post  Rickyt630x on August 8th 2014, 11:57 am

70' block 80 over with 4.150 stroke and made 932 hp, no problems been running this motor for 14 years now.

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Re: Is this True??

Post  J.Toney on August 8th 2014, 12:19 pm

About 5 dune seasons and 1000 street miles on a 521". 700hp and used 150-200 plate alot on the sand. Some cap walk, but also had too much timing early on. This was a 2 bolt stud deal. Some say the stock bolts are even better, but i never tried. I got the timing more inline and it never seemed to progress damage wise. I also tried a tip Paul Kane mentioned somewhere about some ain't-seize under the cap to limit metal transfer.
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Re: Is this True??

Post  Dark Horse of Apocalypse on August 8th 2014, 2:17 pm

Could some building a stock block stroker for N2O usage hedge their bets by installing aftermarket 4 Bolt Mains & limiting over bore to +.040?

For instance a 502(4.39 bore) would be serviceable longer than a 552(4.42 bore) with a 250-350 HP shot of N2O
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Re: Is this True??

Post  J.Toney on August 8th 2014, 2:56 pm

I hope not, the 528" I'm starting on is going to be a 4.420 bore and plan on working up to a 300 kit.
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Re: Is this True??

Post  Paul Kane on August 8th 2014, 5:07 pm

Dark Horse of Apocalypse wrote:...I read the other day a stock block 429-460 BBF is good for about 750-850 HP (over bores within reason).

This sound reasonable to you folks? What about the guys running N2O with Cheater Plates & or Foggers on stock blocks are they playing Russian Roulette with engines?
That's all?  Ford production 2-bolt passenger car blocks have been proven to over a 1000 hp, actually in the 'teens (not that I recommend you try to push one that far).
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Re: Is this True??

Post  maverick on August 8th 2014, 5:10 pm

Been flogging a D9 block for many hundreds of passes. Tuneup, tuneup, tuneup....
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Re: Is this True??

Post  gmsmkr on August 8th 2014, 5:44 pm

X2 d9 block here also.
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Re: Is this True??

Post  Dark Horse of Apocalypse on August 8th 2014, 5:50 pm

Good info here fellas.
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Re: Is this True??

Post  dfree383 on August 8th 2014, 7:05 pm

Dark Horse of Apocalypse wrote:Good info here fellas.

But 750 hp is a safe realistic number as long as it put together and tuned right.
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Re: Is this True??

Post  fordguy69 on August 8th 2014, 9:30 pm

One of the magazine articles quoted Kaase saying his 950hp 2 bolt main dyno mule has made hundreds or thousands (can't remember) of pulls with no problem.

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Re: Is this True??

Post  Lem Evans on August 8th 2014, 9:37 pm

Two things that I suspect.......

1] most of those pulls were nowhere near 950 hp

2] And, he damn sure was smart enough not to put the engine in detonation.

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Re: Is this True??

Post  fordguy69 on August 8th 2014, 9:53 pm

Somehow I don't think "smart enough" has ever been in doubt with Mr. Kaase.  Very Happy 


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Re: Is this True??

Post  Brenden on August 14th 2014, 10:03 am

Use some good fasteners and that should be no problem.
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Re: Is this True??

Post  rmcomprandy on August 14th 2014, 1:54 pm

Brenden wrote:Use some good fasteners and that should be no problem.

OEM fasteners are as good as any when using a stock production block. I have actually witnessed MORE carnage with aftermarket main studs or bolts.

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Re: Is this True??

Post  dfree383 on August 14th 2014, 2:45 pm

fordguy69 wrote:One of the magazine articles quoted Kaase saying his 950hp 2 bolt main dyno mule has made hundreds or thousands (can't remember) of pulls with no problem.  

I was talking to him the other day about his mule.... He did laugh about the power it has made and how long it's been together.
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Re: Is this True??

Post  Dark Horse of Apocalypse on August 14th 2014, 3:14 pm

Good to know unlike most of the Small Block a race block isn't the cost of entry. Shocked Very Happy 
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