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  #31 (permalink)  
Old 12-07-2012, 02:38 PM
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550 horse BB is not rocket science.Just find heads that flow around 285 plus cfm on the intake side with moderate size intake runners

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  #32 (permalink)  
Old 12-07-2012, 05:49 PM
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Quote:
Originally Posted by BigBlock76Fbody View Post
I contacted AFR today, via email and phone number, just waiting on them to call back to reccomend stuff with their heads. I also contacted Brodix i've heard theyre the way to go for big blocks
add dart to that list
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Old 12-09-2012, 07:43 PM
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I contacted AFR, and Brodix and still no reply. I left a message on their tech line and emailed them.....waiting.....waiting....waiting. The brodix facebook page is active because they replied to me giving their email but nothing from them yet
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Old 12-10-2012, 08:21 PM
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so Brodix has emailed me back and suggested a set of heads and intake that would be best for me. They told me to contact a cam company to figure out what i need. I still have yet to hear from AFR. So looks like im going with Brodix.

these heads rr bb-0 Race-RiteŽ Big Block Series Cylinder Heads/26°

this intake manifold HV2017 Brodix HV2017

still not sure on cam, carb, or bottom end.


those heads pushed a 540bbc to 624hp and 644ft lbs at 10:5 cr and a hyrdaulic roller cam. he also emailed me a dyno chart for that setup
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Old 12-10-2012, 08:33 PM
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post number 4?

all you need is a decent set of anybodys heads,
any heads that flow 280 ish plus CFM intake side will give you 550 hp potential.

the small AFRs would be very street friendly
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Old 12-11-2012, 11:42 AM
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I'd much sooner chase 500 hp with the 396, than with a small bore that you're wanting to do. The 396 bored over will give you a better winding engine, and it can be built to get there also. Your biggest drawback to reaching 10's will be the 3700 lb. Camaro. Even with major lightening the fellas I know racing them are still in the 3300 lb. range. Mine is 3500, but it's a '71 and started a bit lighter than a '76.
My best times with a "normal" 427 BBC were low 12's and high 11's occasionally. But I drove mine daily to work, and couldn't build or strip it to try and reach 10's.
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Old 12-11-2012, 04:23 PM
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where did ten second E.T.s come in?

better build a 540 so you have enough HP. A 650 H P 540 would get you there
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Old 12-11-2012, 04:30 PM
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Quote:
Originally Posted by vinniekq2 View Post
where did ten second E.T.s come in?

better build a 540 so you have enough HP. A 650 H P 540 would get you there
The OP siad he wanted to go 10's in the 1/4 in his very first post.
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Old 12-11-2012, 04:53 PM
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Its possible to build 550 HP and use the 454 crank in a 396 block,wow. why? build a 540,,,or spend some time and money on an odd combination.
Let us know what direction you will take?
I missed the 10 second ET wish in the first post and said,yes,550 hp is do able.
I would guess a 550 HP odd ball stroker would go low 11s
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Old 12-11-2012, 05:24 PM
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Quote:
Originally Posted by BigBlock76Fbody View Post
so Brodix has emailed me back and suggested a set of heads and intake that would be best for me. They told me to contact a cam company to figure out what i need. I still have yet to hear from AFR. So looks like im going with Brodix.

these heads rr bb-0 Race-RiteŽ Big Block Series Cylinder Heads/26°

this intake manifold HV2017 Brodix HV2017

still not sure on cam, carb, or bottom end.


those heads pushed a 540bbc to 624hp and 644ft lbs at 10:5 cr and a hyrdaulic roller cam. he also emailed me a dyno chart for that setup
A call to comp and isky are next to get cam specs for your bore and stroke and those heads and see what type of cam is needed then you can find out what the cam needs as far as compression and rpm. That will guide your bottom end build.

Brodix is top of the line. When you first unbox the heads they will look like a work of art and worthy of a place on the mantle. Afr has similar heads a few bukcs less may he worth a call. Sometimes these companies are not as internet ready as you may think. Usally its a phone based bizz.

A good cam guy with heads and any cr he wants should be able to at least guestamate a hp number for you and come close to it if the engine is built right. Best to ask about the bore you have and let them and the rpm needed to hit your numbers guide the bore and stroke changes. If 5500 rpm will hit your number with stock bore and stroke dont stroke it. Usally bigger hp engines are short stroke. It is not uncommon for high rpm engines to make more power with shorter stroke just by being able to raise the rpm or more importantly the rpm the volumtric effecency approches its highest percentage.

If the 396 does the job let it do it. If not replace it with a proper large block of strong small block ls engine. I understand the idea of doing what someone told you cant be done but with a big block experiments are not cheap or easy to pull off.

Buy the brodix heads loaded if possible for high rpm running with high lift cam. You will hit some big numbers. Now running tens is not easy but also not to hard if the engine has some big tq to go with the hp.
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  #41 (permalink)  
Old 12-11-2012, 05:30 PM
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Since we are still in the theroy section of the build here is an et calc. So you can figure the power you need.

1/4 Mile ET Calculator

Now maybe add 100 hp and drop a few tenth and you can guess you et ina perfect world. Calculator is right but most of the time the real world steps in and makes things work differently on the day the clock is running.

But 2900 lbs car with 550 hp will run 10.6 now will your car run that number with just the engine NO but its a place to start. Maybe you will want to over shoot it a little.
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Old 12-11-2012, 05:59 PM
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A 650 hp 540 would run high 10s at 3550 pounds.

3000 pound car would need 550 hp
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