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Old 07-06-2011, 08:10 AM
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sbc 406

i just purchased a 400 complete engine it was still running but im lookin to build a 406 whats the best way to go on a budget? thanks

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Old 07-06-2011, 09:03 AM
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To be used in what type application?
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Old 07-06-2011, 09:07 AM
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I'm not sure what u mean??....
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Old 07-06-2011, 09:10 AM
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What are you going to use it for, cruising, racing only, both, what vehicle, weight, trans, differential, how much power do you want to make, how much money to you want to spend?
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Old 07-06-2011, 09:17 AM
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I'm putting it in a 87 ss Monte Carlo wit a 700r4 373 rear end... I want between 400 and 450 horses... I'll race a little bit with it
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Old 07-06-2011, 09:19 AM
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Do a search here, there's tons of information on SBC's and builds.
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Old 07-06-2011, 01:36 PM
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Quote:
Originally Posted by okc87ssmonte
I'm putting it in a 87 ss Monte Carlo wit a 700r4 373 rear end... I want between 400 and 450 horses... I'll race a little bit with it


what kind of money do you have to spend and what are you going to do with the 700r4 as it will surely shread with that much power. next thing i would ask is that i can't remember which rearend comes in the late 80's Monte Carlo's. if they had the 8.5 the you should be fine with just freshining up the rearend some with new seals, bearings and fluid. but if it is the 7.5 rearend then you will want to look into get a better set of after market gears, and a much better carrier unit, and even after that stay away from slicks or ever drag radial tires as you will likely end up ripping that rearend apart due to the amount of tq the 406 will make.

a few years ago i started with a 87' camaro with an aftermarket 700r4 and a 7.5 rearend, i bought new 28 spline axles, 600.00 easton carrier, and aftermarket 4.10's and i had M/T drag radials. the motor was making alomst 500tq. and not 3 weeks after i got it all togther i was leaving from a stop sign at a bout 1/2 throtle when the rear end just "blew up". i say this because when i got it towed back to my house and pulled the cover the internals looked like metal soup. i have my suspison that the weaker/smaller 7.5-4.10 gear failed but almost everything was damaged. i ended up buying a complete 12 bolt unit from Moser. i spent over 1000.00 on the stock rearend to get it to the point where i thought it could handle that much power, just to turn arond and spend another 3200.00 to have Moser send me a knew rearend.
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Old 07-06-2011, 08:55 PM
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I thought the Monte SS came with a TH200-4R tranny, atleast mine did and if I'm not mistaken they can be built to handle quite a bit of power, more than the 406 will ever produce http://www.carcraft.com/techarticles...ild/index.html
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Old 07-07-2011, 08:06 AM
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they did come withj a 200 r4 i still have ie but was goin to use a 700r4
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Old 07-07-2011, 10:28 AM
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The last time I checked the 700R4 could be made stronger than a 200-4R for less money. But that may be different now. I do know the 700R4, built properly will handle a well built 406.

You will need a more robust rear end also, a 12 bolt GM is minimum in my opinion, because you'll have no traction unless you go to a DOT drag radial and rear suspension mods to control wheel hop.
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Old 07-07-2011, 01:56 PM
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Quote:
Originally Posted by Overdriv
The last time I checked the 700R4 could be made stronger than a 200-4R for less money. But that may be different now. I do know the 700R4, built properly will handle a well built 406.

You will need a more robust rear end also, a 12 bolt GM is minimum in my opinion, because you'll have no traction unless you go to a DOT drag radial and rear suspension mods to control wheel hop.


from everything i have seen the 700r4 can be built for more power for less money than the 2004r.

i will say that with my experiance with the 700r4 and a set of low gears you wont like your first gear very much. i had 4.10 at first with the low 3.06 first gear of the 700r4 makes for a very snappy launch and for a very early shift into second. it was almost too much. but then you have the 3.06:1 to 1.625:1 jump of first to second gear. it is a very big jump difference from the th350 which is 2.52:1 to 1.52:1 i didn't like it very much and ended up swtiching to a ATI th350 and stall. i like it far better.
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Old 07-07-2011, 02:51 PM
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http://www.chevyhiperformance.com/te...ild/index.html
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