Hey guys!!...

My friend, who has a '92 Z28 just bought a used BBC... but its not a normal BBC... its a 540ci with a wicked cam/heads and a 6-71 blower on top! He asked me to post a thread asking if this would follow the usual BBC swap (with a hole in the hood of course ) or if this engine is much bigger than a factory BBC (427, 454...) and requires special mods.

Any suggestions?

BTW - 990hp, 1050 ft-lbs and still street legal (no emitions test here)

 

Anyone? Please?

 

Externally the 540 is the same size as all other BBC engines. It's based on a short deck block and will fit just like any othe BBC swap.

The 540 is a 4.5" bore block and uses a 1/4" longer stroker crank than a 454.

Don't expect to drop the engine into a "stock" car and expect it to survive. The rest of the driveline will need to be changed to take that much power.

 

you'll need a new rear new driveshaft new trans. then you need to stiffing your suspension. if you dont do all that. you're gonna blow apart your trans and rear and twist the frame into a pretzel.

 

What they said! lol Beef up the suspension as much as you can and see what it takes. I would like to see what happens myself. Should be pretty sick if you have the money to do it. If done right, i don't see a problem, its been done before. Street legal, probally! Streetable, maybe! good luck with it

 

it'll be a sweet *** ride. but expect to spend alot of money on the car.

 

Oh yea, we know about the driveline/suspension issuses... He recently bought an M22 4 speed (off a '70 454) and brought it in to be toughened up. He also has a custom driveshaft (steel i think) and a REALLY tough Ford 9" rear with 4.10 gears inside. I think the driveline is strong enough, but we still don't know what clutch set to use. Any ideas?

Oh yea, and the suspension/frame work is going to be done by one of the local suspension gurus :lala:

One more thing... the compression ratio is about 8:1 before you include the blower. It will run on pump gas, right? I don't think its pushing alot for boost, prolly around 6psi, but im not 100% on that number.

 

im dont know much about boost but i think you can run up to 12ish. im probably making myself look stupid here haha. o well. 6psi at 8:1 is fine.

 

A 6-71 running 6 psi on a 540 isn't all that much, should live a happy life on the street but IMO 990hp is a bit optomistic for that set up.

 

i forgot this was a big block

 

Oh, i know 6psi is probably not going to make 990hp.. I got the 990 number from the dyno test that was done on it, but it was running with more like about 10psi in that test. He dropped it down to 6psi to put a little less stress on the engine while being used in traffic.

Anyway... That M22 4 speed should hold up, right? I know that all the high performance big block cars (Vettes, Chevelles, F-Bodies) used them and they worked great but will it hold up to this 540's numbers?

 

I'm suprised that nobody has mentioned anything about getting the car in forward motion, cause the stock 245's or whatever rubber isn't gonna cut it. You're gonna need some steam rollers to hold that kinda power.

 

no, this isn't going to work.
he pretty much just bought a big, new, pretty, paper weight.


just because i'm a nice guy, i'll buy it off his hands, but i can't offer much, since it's pretty useless. i just like collecting junk.

 

that's gonna be a wicked ride when it's done...

 

Holy hell!!! That will smoke them ricers fo' sho'! Oh and also the Mustangs, and Corvettes, and Vipers, and other Camaro's, and etc. etc. etc.


I have to hear about this when it's done. I want to drop a 500+ cu. in. big block in a Camaro some day!

 

m-22 hold up i doubt it i wouldnt take that chance.

 

This one blows my mind. I'm going to be really frank with you and even rude for a moment for your own safety. Your questions tell me instantly you don't know the first thing about building or racing a serious drag car. Yet you all of a sudden have 900 Hp and are going to apparently cobble together a "street car" from a '92 Camaro with a Muncie 4-speed and a Ford 9". Your funeral will follow shortly. In fact, whoever sold you this engine should be tarred and feathered. How old are you, anyway?

The Camaro is a production car. You need a dedicated drag car and related safety equipment to throw this engine in. Then you need to keep it on the track. Stuffing the go peddle on the street will result in you going out in a firery ball.

 

Well it is for his friend.

I don't know if a Muncie will be able to handle that. I'd go with a TH-400 or 4L80, and make sure it is built!

 

I'm not really worried too much about how drivable it is on the street as he (and his paycheck ) have decided that it would spend most of its life as a trailor queen... so basically it just has to stay in one peice crawling around on and off the trailor and look cool.

BTW, i am 17, but my friend who is doing this is 25.

To be honest, i would be terrified to drive this thing.

But like i said, it has to be able to be driven (never hard) and stay in one peice as it is now more of a show car than a weekend warrior as originally planned.

 

I was 25 once.....

So does your friend who's planning on this also plan on seeing 26?

 

I said it would only be a show car now... so it will probably never see speeds over 25mph i'd bet.

 

It's certainly good to take safety precautions. I'd say tell your friend good luck and continue with this project. Those are some sick power numbers and I wish I had a car that had that much power. Just make sure the rest of the car can handle the power.

 

I dont think that any"normal" manual trans can be beefed up to take that kind power but i bet one of those planitary trans would hold up (big money) you have a race motor you will need a race trans. As for the car SFC are not gona be enough to hold her together (think that last race in herby the love bug) you will need a full rollcage As for streetable I know about 6 guys that have full blown drag only cars(10s or better) yet they still take them out on the street for our friday nite street racing just have fun and dont get anyone killed oh and take it easy on the 540 if memory serves I think thats a one time use motor keep the boost down the is not much room between cylinders