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  #1  
Old Apr 27th, 06, 12:54 PM
chadrafuse chadrafuse is offline
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Default how much can a 3970010 block handle, it has the 010 high nickel casting

how much hp can a 3970010 block handle. it has high nickel content 010 casting on it. currantly my motor is pushing 515 hp on the dyno with 10.5:1 comp. world 4340, 383 stroker kit, dart pro1 230cc cylinder heads, performance ported, i forget the exact grind of the cam but i have it some where. anyways i wanna up the compression with a piston change and a slightly larger cam, i just don't know what the block will handle. i dont really have the funds for a block swap right now and i don't really want to grout it either cause of other peoples heating problems i've seen. can somebody help out............................................... ....
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  #2  
Old Apr 27th, 06, 01:03 PM
Silver69Camaro Silver69Camaro is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

The only way to tell is when it decides to break on you. There is no definitive answer.
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  #3  
Old Apr 27th, 06, 03:24 PM
camaro1973 camaro1973 is offline

 
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

that engine block should just about anything you want to throw at it. i have one in a 1973 that supercharged pushing 650 hp and plan to add even more to it and i am not worried a bit because i build alot of 350 engines for people
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  #4  
Old Apr 27th, 06, 05:55 PM
camaroman7d camaroman7d is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

You didn't say if it's a 4 bolt block or two botl? If it's a splayed 2 bolt block (with splayed 4 bolt caps) then that is as strong as it gets.

I would be more worried about your rods than I would the block.
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  #5  
Old Apr 27th, 06, 06:52 PM
chadrafuse chadrafuse is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

its a four bolt block
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  #6  
Old Apr 27th, 06, 08:21 PM
chadrafuse chadrafuse is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

my rods are forged 4340 as so is my crank.
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  #7  
Old Apr 28th, 06, 08:06 AM
camaroman7d camaroman7d is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

I wouldn't be worried about taking it to the power level you listed. It should hold up fine.
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  #8  
Old Apr 28th, 06, 08:30 AM
NER perf NER perf is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

ive personally run dyno proven 976 hp on a factory 2 bolt block with aftermarket caps and a half fill .biggest problem was keeping head gaskets on, because everything moved so much at those power levels. also had some main cap walk .had to be very careful with tune up not to detonate it .
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  #9  
Old Apr 28th, 06, 09:06 AM
Eric68 Eric68 is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

From what I've been able to gather a factory block is usually safe (with good prep, splayed 4 bolt caps, etc) to 600 horse. Have heard of a few that have gone to 700 or more, but it starts getting risky IMO over 600. Somewhere above 600 the factory blocks can split and lift the deck.

The problem is, different castings have subtle differences and even blocks with the same casting numbers are not 100% exactly the same due to date, core shift, over bore, metal fatigue / work hardening, etc.

Sonic checking can help find core shift, plugging the deck, filling the jackets, etc all help, but by the time you get into the expense of all the extra prep work you might as well go to an aftermarket block and not worry about it for a high HP application.
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  #10  
Old Apr 28th, 06, 06:35 PM
CNC BLOCKS N/E CNC BLOCKS N/E is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

On some of the 010/020 blocks with 2482 center capswe have run 500 those in 500 horse applications and I believe GM rates them at 450 horse but with the splayed caps added we run them up to 600 horse with no problem.
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  #11  
Old Apr 28th, 06, 07:51 PM
oger oger is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

What is the casting date? That will have a very large effect on what the block will handle.
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  #12  
Old Apr 28th, 06, 08:00 PM
Busted Knuckles Busted Knuckles is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

NER perf, I'd like to know a bit about that combo. That's a lot of hp from a 350, no doubt!
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  #13  
Old Apr 28th, 06, 08:11 PM
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sc68z28 sc68z28 is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

I copied this info from a post at HOT ROD, earlier this year. It said that the figures were aquired from SUPER CHEVY, POP HOTRODDING, and some local shops. None completely agreed, so lower values were used and rounded down.

2-bolt w/ OE main bolts = 400hp
2-bolt w/ ARP studs = 550 hp ++high nickel blocks =700hp
4-bolt w/ OE bolts = 475hp
4-bolt w/ ARP studs = 700hp
OEM blocks w/ splayed 4-bolt studs = 950+hp
Bowtie blocks w/ splayed 4-bolt studs = 1500+hp!

RPM plays a larger factor.

OE 2-bolt = 6000 rpm
2- bolt w/ studs = 7000
OE 4-bolt = 7200
4-bolt w/ studs = 8500
Bowtie or OE splayed studs = 8500++

In the article, it stated that a 250hp engine that was spinning at 7500rpm exerted more loading force on the main-caps than a 550hp engine spinning at 5500rpm. this means power and RPM must be considered.

The HP figures are good reference, but the RPM limit of the motor is a better way to choose a block.

So my 383 ci, OE- 010, splayed cap & studs, makes 800hp at the crank. The blower uses 100hp so thats 900 actually being made and I want to spray it with another 100shot N2O. Thats 1000hp at 7000rpm, think it will hold?
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  #14  
Old Apr 29th, 06, 04:59 AM
CNC BLOCKS N/E CNC BLOCKS N/E is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

Quote:
Originally Posted by sc68z28
I copied this info from a post at HOT ROD, earlier this year. It said that the figures were aquired from SUPER CHEVY, POP HOTRODDING, and some local shops. None completely agreed, so lower values were used and rounded down.

2-bolt w/ OE main bolts = 400hp
2-bolt w/ ARP studs = 550 hp ++high nickel blocks =700hp
WOW this info does not seem very factual. Look in the GM catolog as they have the horse power ratings of what there blocks are good for and i find there info to be very factual.

The customers we do work for are not that stupid to build a 700 horse engine and use a 2 bolt MAINS and I know there will be people say there engine 600 horse and its a 2 bolt block but are basing there info on 1 or 2 engines they have done in there life time.

Here is a good link to read http://www.chevelles.com/forums/showthread.php?t=38173


Here is a pic of a block that came in that was just over 400 horse and it did have studs and studs DO NOT MAKE A CAST CAPS ANY STRONGER AS IT STILL THE SAME MATERIAL.



Funny any time we have seen this its been a 2 bolt main block and after installing splayed caps the problem goes away.HMMMMMMMMM
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  #15  
Old Apr 29th, 06, 05:49 AM
Dominate67 Dominate67 is offline
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Default Re: how much can a 3970010 block handle, it has the 010 high nickel casting

Well he already said he cant afford a aftermarket block so its all mute at this point. We had a 383 solid roller putting out 550hp getting sprayed with a 200 shot that lived for years. My personal 377 was about the same and got turned 7800 ( now this did eventually fail, BUT i think the spacers i was using augmented the effects cap distortion at that high RPM ) the 408 thats in my car ( 2 bolt studded ) makes over 600hp and routinely gets driven on the street and sprayed with a 200 shot. Its 3 years old and doin aight.

Point is he only wants to change compression and cam. He'll be looking at what 575hp? He doesnt have the money to try after market block so we are debating all this for nothing. Build it and run it, are you pushing it? yea, but you really have no choice do you.
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