Small Block & Big Block Chevy Specific - Help me build a 500hp 454..

ok guys last thread I promise :)
anyways I am wanting to build a 500hp I guess 550 so I can get close to 500 at the wheels using a 454 and iron heads....

What heads should I go with to port, a good cam, intake ect.... also want to put a 200+ shot ontop of it... thanks

Find some 781 oval port heads.

Forged pistons would be a good idea, not only for the N2O but for an accidental over rev, piston speed in a big block is a real concern. I have heard of stock rods going 700 hp on a big block, i would go aftermarket scat rods, same i have heard of stock cranks. You can have oval ports hogged out to make the power you want as long as they are not the small peanut ports. Good luck and have fun.

You are pretty much wanting to build my engine with less bottle, you should be ok with the stock crank, aftermarket everything else.

Check out the engine masters BBC challange. They had a 454 that put out 650+ at the crank using mostly stock or off the shelf components except for H/C/I and they were ported and matched. Because you are using nitrous though like everyone else said step up rods, pistons to handle it.

I agree that you should go with Oval ports too. No need for big rectangle ports on that small a motor.

Have you looked at the iron merlin oval port heads?

get a crate motor...

^^^LOL, that takes the fun outta it!

Also might want to look at the weight of a Iron block BBC with aluminum heads and a Iron block Iron head BBC compared to what you have now. I bet you will be pretty shocked at how much more weight those heads are going to add. I think they are roughly double that of aluminum. True, you could get a crate motor.

is this the max you want to make? or just a rough number? my 468(454 bored) makes 790 on motor with a huge cam, all forged internals, and oval port cast heads.

500 on motor plus 200-300 shot of juice

500 on motor plus 200-300 shot of juice

Fairly easy with the right parts...

i love iron heads...... the best thing to do with them is put them in the trunk.... they do alot better there than they do up front....

i love iron heads...... the best thing to do with them is put them in the trunk.... they do alot better there than they do up front....

Wise words............

So it seems easy enough to make 500hp on a bbc what about a gen1 sbc? can it be done with iron heads?

Heads mean weight between the difference, thats it. I say use iron if you are that budgeted but besides that, aluminum allows ever so slightly more detonation forgiviness.

Not trying to be a dick but it sounds like you are trying to do this on more and mor of a budget and I think its going to burn ya.

It will be harder with a SBC, its easier with more CUI,

Get a BBC and find the oval port Iron heads with canted valves.

500 on motor plus 200-300 shot of juice

Easy.

I have an old dyno sheet of a 468ci BBC that made 636bhp on pump gas and iron oval port heads. Stock crank, rods, KB pistons, flat tappets, a Victor jr and a Dominator. PM me for parts numbers.

Not trying to be a dick but it sounds like you are trying to do this on more and mor of a budget and I think its going to burn ya.

It will be harder with a SBC, its easier with more CUI,

Get a BBC and find the oval port Iron heads with canted valves.

+1 on this info!!!!!

Spend you money on a good set of aluminum heads and run a solid flat tappet cam to save some money. But put your money into the heads!! The stock crank should be able to hold what your wanting out of it, so long as you keep the rpm reasonable (7000 rpm or less). You can buy a set of good forged rods from Scat for $170+ shipping ( http://www.cnc-motorsports.com/product.asp?ProdID=10367&CtgID=1134 ). Here is a set of 2618 alloy forged pistons that won't break the bank but will live on the n2o, http://www.cnc-motorsports.com/product.asp?ProdID=18810&CtgID=18789 .

Info on the heads? A buddy of mine has the magazine, it will be a few days before I see him again, when I get it Ill post the casting number, its in the last engine masters magazine, they put big valves in a set.

Here is a nice set of heads that aren't too expensive, http://cgi.ebay.com/ebaymotors/Dart-Pro-One-Chevy-Aluminum-Big-Block-Heads-Pro-1-BBC_W0QQitemZ220216117772QQcmdZViewItem?hash=item2 20216117772 .

I really like Brodix heads. If you have an issue with intake height or exhaust they make a race rite series that keeps ports in the stock locations.