that motor was one bad mother wasnt it
and they were useing some kind of special brodix heads i think
but if they were looking for driveability why didnt they use a peressed on iron gear on the cam that way they wouldnt have had to use a broze gear just my thoughts

 

Yeah it was crazy...Major Major $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

 

I saw the same thing but I came in on it late. They did say it was a srteet motor and that it had a really flat power curve. it made 670 Hp or something rediculous like that. it had a 4.20" bore and 4.2" stroke or around there. Did anyone catch what block they used? Was it an aftermarket 400 that was bored? This opens up a whole new potential for big inch NA small blocks with a mullti port set-up on it.

 

That's why you go buy the big boy...the 572 that they have in Project "SuperNova" and "Copperhead."

 

That is a big block though. A 427 small block with a NA 600hp is pretty good and is a direct fit into any 3rd gen.

 

its actually a 472 not a 427

speaking a 472's what was the bore stroke onthose caddy 472's

next will be a 502 small block

 

Yup you are right. You caught my typo

 

yeah that 472 was awesome, shafroff does some awesome work and plus its in my which is good for me. THey used a motown 415 small block. i check their site and they didnt have the big dog 472 yet. But they did a 434 up which was 595 hp on 93 octane and it cost 8995.

 

I was kind of disappointed personally
That is a sick motor don't get me wrong, but that just didin't make the power I thought it would.
I saw a 406 make very similar numbers for a major fraction of the cost.
They used a Brodix reinforced high rise block to make it to answer someones question.
The cam was higher to fit the crank, it was a totally custom block
LOTS of $$$$$$$

 

My friends 406 makes over 700dynoed hp with some "wierd Brodix heads"

(Brodix 18degree)

Stock block, stock cast crank. streetable 10.5:1 cr

 

My 427 Ls1 sb is making around 600 to the flywheel. All motor. I could change the heads and make over 700. Why go that big.



Wait! To say you have a 472 small block would be good enough, no matter what the hp would be.

 

the only problem with motors of that displacement for a small block is that the head selection available for small blocks will never provide enough air for those motors. BBC heads are 335cc while the largest SBC head I know of is 240cc, unless you go 18 degrees, then you get 270 and 280cc heads, still to small and the motor will no longer be streetable because most of these large cid motors are high compression with large chamber heads. Anything larger than 427ci is better as a big block because you can maximize power out of them. Mild 454 = 600 HP, wild 427 sbc = 600 HP

 

actaully i thought they said it was a dart iron eagle block?

 

basically a tall deck small block with a clearance camshaft location for big stroker motors.

 

we had this discussion over at the nsca boards and someone suggested the little chiefs. what are the cc ratings on those bad boys...also check out the sbc2 heads and the splayed valve heads. their is all kinds of wierd heads out there but they are expensive...

 

After I had work done to my AFR210's I was going through their book comparing numbers when I ran across a set of sbc2 heads they did, while I dont remember what lift the flow was measured at -wanna say in the .700-.750 range? they flowed 434cfm@28" plenty a flow for a 472 sbc.

 

It was an aftermarket block that was a tall deck I think it came from World......It must be nice to have the money too spend on building this stuff on TV......but you know I bet all the parts were given to them by the manufacture for free.....its all about advertisement.....giving the parts for free is money in the bank and money well spent......almost free advertisement.

 

it was a BRODIX block. i wouldn't suggest you use anything World in those types of applications. for a mild/moderate street motor, that's one thing, but not for something like that.

 

that wouldn't be very streetable as SB2 engines tend to be, .700-.750" lift is monstrous, most BBC heads flow 434 around .550" with some port work and larger valves. SB2 heads also have very small combustion chambers so again, difficult for streetability with CRs nearing 15:1

 

 

who said anything about being streetable! lol

 

I would like to see some flow sheets of these "most BBC heads that flow 434cfm @28"

not trying to start a pissing contest here, but right now I'm looking at my AFR catalog and checking out their 357cc 100% CNC ported BBC head-biggest one they offer in their catalog with 2.250Int/1.880Ext valves. I'm looking at .500 lift with 354cfm, .600 with 393cfm, .700 with 415cfm, and .800 with 425cfm all at 28"H2O. Now for me looking at an after market head manufacturer that purpose built these heads for racing I would think that if "most" BBC heads could flow 434cfm @.550 with port work and bigger valves, they would have saved a ton of money on R&D for their own head design and just copied a head that is capable of what you have stated. I know I would, why spend many thousands when we can purchase a set of heads for $3-4000 and mold off that? Curious to hear what "most" of these BBC heads are as I'm sure every BBC guy in the country would love to know as well. Why spend $3-4K on heads when you could just get a valve job and port work and be better than after market heads, Unless your idea of "most heads" is 18* Big Cheifs or Big Duke which I would not consider "most BBC heads" I have seen factory 078 heads flow 338cfm @28" which is pretty dam impressive considering factory cast design. Lemme know so I can start buying large quantites of these to throw some bigger valves in and port out, think I'll call them MBBC Heads aka Most Big Block Chevy Heads

 

Actually to correct you all, it was a DART block

 

You musta seen the rerun of it last night too huh?
Still be fun to tell people it's just a bone stock 350, then blow their doors off. To bad you'd have to be tubbed with good slicks to stick it from an all out full throttle pass

 

who the hell says AFR makes the best heads for BBCs? or for any motor for that matter. I think AFRs are junk compared to Dart, Brodix, or Pro Lines. still, 428cfm out of them. a factory head flowing 338 can be ported to flow over 430 cfm if taken to a competent porter. point is a big inch small block will never be able to make the same power as a similar size BBC because of the selection of heads and induction. yes you could run 15 or 18 degree heads or SB2.2s and get the 400+ cfm of air to feed the motor for a ton of power, but then you'd also be running unstreetable compressions and if you are going to go all out race, BBC race heads are far better. you also can run a milder cam with the BBC and keep it streetable.

 

Slow down there kiddo. Go back and read what I wrote, I want proof of these BBC heads that flow so incredible like you think. The BBC factory heads I was reffering to that flowed 338cfm had EXTENSIVE, I repeat EXTENSIVE port work, acid dipped, multi angle valve job, etc... We're talking about a ton of money stuck into a factory head for class racing. The only reason I quoted AFR flow numbers is because I have their catalog in front of me and my personal head flow sheet mimics what they had claimed in their catalog-read- no hype. As far as your claim as them being junk okay there buddy, now I really know your full of chit.

Better stick to subjects you know like chrome wire loom and chrome oil pans, leave the real life car stuff to guys that know. I see this stuff everyweekend and am buddies with alot of guys running what you read about in car magaizines and watch on tv. From what I've read your just a fan that watches alot of television then thinks their an authority on real world application. You obviously dont have a clue, so all I can offer is get off your butt, quit reading and watching all this super tuner stuff and get with guys that do it every week and really learn something so you dont make claims that make you look like the fool you are.

 

AFR is trash compared to Dart or Brodix, anyone who races knows this. **** off. I am the one questioning some garbage seen on TV, i.e. this 472 SBC, I think a 472 BBC will kick its *** because of the better selection of parts available for it. doesn't take a rocket scientist to figure out that a head with a 345cc intake runner will OUT FLOW a head with a 230 cc intake runner. p.s. AFR is junk. I run a set of 220cc motown heads on my car, they've been ported, polished, big valves, flow much better than any AFR junk and cost 1/4 the price. I don't waste my times reading magazines OR trusting brochures from a company trying to sell you heads like you, so shut your gob. I don't even know why you're getting hostile, but you better back the **** down punk ***.
btw: your fireturd is slow. go figure the fast car has DART heads on it... not AFRipoff

 

before this gets out of hand, 338 for an extensively ported stock head is still far better than ANY ported stock SBC head, hold an LS1. 434 at .550" isnt common, but over 300 cfm @ .500" is for a BBC head, which is superior to all but the 15, 18, and SB2 race heads at that lift. port flow at max lift is irrelevant, port flow at cam lift is, as BBCs can run milder, smaller cams with better flow than an SBC can, making it a better big inch STREET motor.

 

You just concreted the fact of what I and everybody else was thinking about you and your opinions. Gonna have to have mom and pop turn on the parental control for this sight too

As far as the Dart's being on the fast motor, hmmm let me see. My 355 is a bone stock rebuild made for a truck with 4 vavlve relief pistons 9:3.1, peanut cam, 305 heads with maybe $2K with the way it sits in a 3400lb car. Now the 383 not 338 you gomba has the dart 230cc heads which were flowed and actually flow 20 cfm less than my AFR 210's read that again gomba 210cc runners, mine are out of the box, the 230 darts have been touched up-nothing major, cast shift removed. Again 230cc Dart Pro 1 DID NOT flow as much as my AFR 210's. Read this a few times until it sinks in. Oh and this 383 is a 12.5 motor with monster solid roller, 8" convertor in a glide and weighs 2900. Now given the price difference between the 2 mills, the ole 383 really aint that impressive for the money for an extra $7K. In fact it only dynoed at 555hp and 501tq which is about all it can and will make since the Dart heads dont allow for much more hp because of flow unless massive port work is done, acid dip, angle mill, etc...

I dont remember disputing the fact a BBC could make more power than a sbc, for less money or whatever. A person almost has to have a rocket scientist degree to figure that out??!! ?So you musta heard that from somebody too, well at least they have given you sound advice there.

Now pop the Rocky movie back in the vcr and then come back with another intelligent response. Oh, dont forget to tighten down the bolts on your chrome oil pan goof ball Hope you got your chrome tranny pan and diff cover too so you can chase leaks and retain all the heat in these parts, this way your not on here wasting my time.

Thanks for the intelligent info again, dont know what we'd do without you.

Oh, I dont know where you got your Motown heads or if you even own a set, but you better take your math class over again. Even for the cheapest set of Mtown 220's in Jegs they're $479.99.ea assembled for a hydraulic roller and $549.99 ea for mech roller. now how does that add up to 1/4 of the price of my AFR's? $1360.00 set up for mech roller. If you do have these heads, good job. You just got a really nice set of heads for $340, you the man, you engine guru you Still waitng for any info on your factory BBC heads that flow the outstanding numbers you were so sure of. But with your vast knowledge of things based on what I've read so far, I'm sure you have little time to look for things that dont exist, especially with NASA always bugging you for your knowledge. Oh wait, you cant do math either as I stated above, I'm sorry. Get a glass of milk and then go night night, leave the keyboard alone.

 

hahaha Don't you hate when punks come on a board and want to call names and act stupid? You told him IHI. roflmao

 

LOL, kids gotta love 'em:lala: Would'nt be so bad if anything he's said made any sense, but so far with his responses to other posts and his stuff and this bs especially about the BBC heads that told me completely how full of chit this kid was. So with trying to state information that is so far from the truth when he obviously has no clue just makes him a gomba He's doing it to himself and if he's like the other internet wizards will just keep digging the hole deeper, but that's what keeps this internet so interesting with the experts like him

 

That guy is a ****** i saw the same show, but i was too high to remember any of it ahah good times.'

SSBO