HAHA, love the title. But as it says, im going to put a BB in my iroc-z. This summer i have enough cash to make it happen. My uncle is getting me a 502 block to start with and he will get me everything i need to build the motor. He is a drag racer and has 3 camaros all running from 10.2 down to a flat 8. Im going to go with 13 to 1 ross pistons, forged bottom end, the biggest AFRs available. And to top it off, tunnel ram with prolly 850 dominators. What should I do besides a roll cage and SFCs. I want about 600 hp to the wheels. My car is also t tops. Im doing this because im so sick of my TPI pig small block and fuel injection crap.

 

please tell me this is a track only car

 

Right now you're just dreaming. Get some hard facts first. I can say this because your combination of parts is already wrong. First of all there's no such thing as an 850 Dominator. They make a tiny 750 for the posers what want the look of having a dominator on a street car and keep it drivable but the next jump is to a 1050.

My engine puts out 600hp and doesn't have as much as what you just listed.

13:1 pistons means either running C14 race fuel or alcohol. Say goodbye to any pump gas.

4340 crank and rods are nice to have but they're also the most expensive. I only use I beam rods. H beam rods are just exotic parts.

Big heads are not always better. Right now I only use Merlin cast iron oval ports. My next engine will have aluminum rectangular ports but still won't be "big" heads. AFR is only one choice for heads but I don't see many of them on big engines. Merlin, Canfield, Pro1, Brodex and even Jegs have very good heads for the BBC.

I'm only using a Holley 850 converted to alcohol. A dominator would be nice but it's too much for this engine.

You mention nothing about a camshaft choice. The camshaft will determin just how much power the engine will make. It will also determine if the car will be street/strip or just strip.

Whatever you decide to spend on the engine, expect to spend at least 3 times that on the rest of the car. Building a 600+hp engine won't run 12's if you can't get the power to the ground. Expect to completey redo the driveline and chassis. A $2000 complete transmission with torque converter isn't out of the question. You'll also need at least another $2000 for a complete diff to take that much power. That's not considering what you want to do with the chassis. Stock suspension just isn't going to cut it.

My car is also T-tops and I've never had a problem with them. I've only run a 6 point roll bar for the last few years. This winter I finally installed a full cage because I'm getting close to the 9 second range.

 

Doug---I want this car street legal.

And stephen, I like your car, and want to do the same to mine but at the same time keep it street legal. This is my decision and just the very first roughing of my ideas hence my terms were wrong. Who has the 84 with the 454 650 hp. He has stock wheels, and what looks like a stock car.

 

AWESOME-----13.1 on the street that takes *****! Man wish my pockets were that deep. Like everyone else is saying you don`t need that much, you can get 600 ponies from a 502 with 10.1 but if you want 13.1 and can afford it cool. With that much squeeze you can probably run a cam with like 1 inch of lift LOL I run a comp street roller in mine it has just under .700 lift and idles better than a tbi with a 225. duration hahahaha! do the RAT!!!

 

i disagree with the application, for what you want to do a bbc is a complete waste of time. You can take a 427 sbc motor that will actually fit in your car that makes 600 hp n/a, itll take high quality parts, but its really not that much of a challenge and you will have already met your goal.

A bbc is a pain to deal with and for a street/strip application it seems like a waste of time to me.

 

Yea, that sounds like a good one, spend a ton of money on a small block you gotta wring out sky high to make any where near 600 horse...that sounds like a street car to me...umm.. not! Build a mild rat and you won`t need pricey parts and won`t need a tach that goes to 11,000 rpms either. The big block will cost more than your average 1 hp per cubic inch small block, but the torque you`d get in return is well worth the money, That`s what a small block can`t match. Dollar for dollar the big block will always make more torque have better driveabiltiy and flow WAY more air thru the heads, then even a large aftermarket sb head. As far as ever making it truly street legal, emission compliant, it`s not gonna happen with the rat, nor a will it with a monster mouse. small blocks are a different sand box, I`m not bashing them, because I deal with them all the time, but the rat is just a different level of performance the mouse can`t rival period.

 

I had a street/stip 540ci big block 13-1/2 stuffed in a 84 camaro it was an awesome thing to see but I liked my little 408ci small block better. It is easier to work on and all plus it is half the money. My car had a 12point bar custom subframe connectors, rollover bar and on and on and there where no problems with the t-tops they still came on and off with no problem and never leaked. Just make sure you have DEEP!!!!!!! pockets to start this is cost 3 times the amount like Stephen said. Also my car went 8:70's @ 162 mph on a 29x10.5 slick so it can be done with a 440ci small block (old owner not me)

good luck
AL


PS think about custom headers they cost big $$$$$$

 

Alright. Everyone telling me that i cant do this just makes me want to do even more. To the one guy with the silver 84 Z with the big block in it. I want to do the same thing but my motor will have tunnel ram . Im probably just going to go with ported exhaust manifolds since i heard they fit no problem. Keep the advice coming. I would do a turbo 427 SB but I wouldnt put it in a 3rd gen. Dollar for dollar the big block is king. Swap starting this summer, roll cage is already being fabbed...

 

I love the way you think. We should hang out.

PS. I was thinking about a .800 roller cam

 

i think you need to do ALOT more research.

and what exactly is your definition of "street legal"? cause it sure isn't gonna be smog legal

personally if i were to build a crazy powerful 3rd gen, i would start with some good cubes...but in the form of a SBC...people would think it's just a 350 or 383

my choice and since it's forged internals, it could probably handle a 100hp NOS shot on top of that

 

I could build the big block i want with more HP than that and still have enough money left over.

 

Let's see .... a 502 big block, a tunnel ram, 13:1 compression, dual Dominator carbs, .800" roller cam - and all this through ported exhaust manifolds.

Right.

 

i don't know how much transxtreme knows, but i'm sure he knows enough to build this engine..I think you should just do a little more research on your parts that you picked out...but if i were you i would go with the big block too...just to be different, but from the sound of it, i don't think its gonna be a street car....big blocks aren't street motors unless they are blown...they just weigh to much, and you don't get that quick snap like you do with a small block...but if you like that feeling of massive torque, go with the big block...and if you want 600+ ponies n/a, don't go with SB because you'll be wrenchin on that thing constantly, cause you'll be breaking parts left and right. but whatever you choose, good luck man, i hope it works out good for ya

 

Hey, klumb15

Come on over to the north side of detroit one nite this summer (gratiot) and I`ll be happy to show you the quick snap a big block can put down...how`s 1.6sec 60ft times on bfg`s with the tires BLAZZIN`!!

let me know when you want a demostration