building a high rpm big block chevy
 

i would like some tips and advice on what to go with and how its been done let me know imm gonna build on this winter i would like 9000 rpm or a lil more with no worrys let me know any advice is better then none thanks :shock:

Re: building a high rpm big block chevy
 

My advice is
spare parts... lots of spare parts.

now that funny!!!!!!true but funny.

$$$$$ It ain't gonna be cheap!!!!

You are talking 15 to 20K worth of parts if you assemble it yourself and want it to live. Callies Magnum or Crower crank and GRP rods would be a good place to start. A block that will handle a very large bore with a short stroke would be the next to look for. And premium valvetrain components will be a must.

Now, why spin it so high? A lot of power to be made these days without resorting to high RPM.

Back in the mid 80's I ran a pure stock L-88 427,12.5:1 pistons and square port heads and it was all balanced. But I added a hugh .775 lift crane cam,triple springs,holley strip dominator intake with a 1050 carb. I buzzed it to 8,500rpm and it held together for one race season. The cam was way to much for the engine but it sure sounded good. Looking back I was very lucky the thing didn't split in two.

Re: building a high rpm big block chevy
 

reading your post word for word and taking it literal...

My straight to the point advise to you is..........

get $40,000 in $100 bills...contact an engine builder such as Gene Fulton, PAR race engines, Rear Morrsion, Steve Schimdt....etc...etc...etc...

take them the money (40k) and it will get you started..they will call you back when they need more...


don't even think the word Budget with what your thinking by reading your post..

seriously ! :shock:

I donot believe there is a 9,000RPM motor made that does not require a lot of maintance, look at the prostock guys, they check valve train every round and changing springs between rounds is common practice and they are running on 1.888 rod bearing and 3.25 stroke with 2.300 main bearings and i'll guarentee you those engines come down between races and everything is magnafluxed for cracks. Nascar engines run 500 miles but low compression and also small bearings and fully rollerized and tese motors cost well over $40,000.00 each. I don't think you can build one that will live like a bracket motor and not have to spend lots of money and lots of maintance. In another post i said i knew a guy who had a 288" Nickens and Brown motor that ran all season comming out of the hole at 10,500RPM and he did not break all season, but the car slowed down from 8.80's to 9.20's after about 50 passes.

JMO

Zip.

Big ask, A really flash valvetrain,really short stroke,& a good amount of maintainance,& of course a healthy budget.That is what I found was required when I had an engine that fitted your description That was a long time ago & whereas it was good at the time Ive now gone soft & use cubes & go faster cheaper

The truth is that what he is asking for in the motor is intirely possible to build, as stated it will not be cheap. Nothing good is. The one thing that stands out to me that can't be done is "9000 rpm or a lil more with no worrys". Can't be done. If you are racing it there will be worries that's why there is maintenance done.

Curtis

hi

the orginal post said building a "9,000 rpm plus Big Block"..with no worries..

with all respect kwkracing you cannot even try to compare this type of engine the original poster made to a High rpm Budget Built Small block.

but just for conversation what type of parts and Money do you think it would take to build the type of Big Block he is wanting to build.

i ask this respectively..

thanks
_________________

Absolutely correct the original post does says B/BLK.

Note the subject line.

Zip.

Can you destroke a BBC to 200 CI, if so that would be the only way to have a 9000 rpm BBC without having a grenade in the oil pan. Under $15000.
Seriously if your mudracing why not build a small block chevy, its lighter up front and with NOS and or a blower can be comparable to BBC numbers. Then turn it like a prostocker.

Guys, thats no way to build a bomb.....


http://img01.picoodle.com/img/img01/...4m_5ffa3a1.jpg



Thats how you build a bomb...

Thanks Zip

Whats the deal with everyone scared to rip one up. A close friend of mine runs a 555 bbc with eagle crank and GRP rods, and spins it to 9000 rpm every pass. Another has a 598 bbf with Grp rods and spins it to 9000 rpm every pass. I run a 434 sbc with Lunati crank and GRP rods and spin it up to 9200 rpm every pass, sometimes up to 9600 rpm. I had a 532 bbc 4.625 bore x 4 stroke and turned it up to 9000 rpm every pass, it had a stock gm steel crank, and Bill Miller alum rods. The trick is in the valve train, you cant shimp there, T&D Shaft Rockers (or Jesel) are a must, well designed camshaft, good springs, strong push rods. We check valve train before each race and stay on to of springs. They are not low maintenance, but they winn alot of races. These are not drag racing engines, we mud race too. I can see where this may cause problems if you were running 1/4 mile maybe, but a run for us is under 3 seconds. So to the oroginal poster of this thread, it can be done and is done quiet often around here. The 555 bbc had been running for 3 seasons without a freshen up and upon teardown the bearings looked brand new. It will go back together with new bearings, same rods and crank with new rod bolts. It will get new pistons because we are raising the compression.

You must let your camshaft co know what you intend to turn so that they build the cam accordingly. We use either LSM, Harold Brookshire, or Bullet.

Sorryyyyyy! i posted it in the wrong message, there is a post for a 10,000 rpm sbc....... And they were asking me for details. Sorry to all i offended.

No offense taken here Bro..i just wanted to know what you knew...lol :D

i do understand ANYTHING can be done..but putting the word budget and practical in the same sentence and making it sound convincing is tough on this Subject..i think Zip summed it up with his PRO-STOCK example.....IMO

i think the orginal post was a catch 22 post...if the 9,000 plus BBC didn't get you...the "WITH NO WORRIES" statement would.


:D

I have run a 540" BBC with a set of 14 degree brodix heads on it in a pulling truck for five years. The average run is about 14 seconds long. The engine spins between 8800-9200 EVERY single run. I use a Dart block, Bryant crank (4.25" stroke), GRP aluminum rods, and Venolia pistons (4.5" bore), the engine has a peterson dry sump, also have all titanium valves and good springs with T&D shaft rockers. I still run a standard diameter camshaft and lifters. I check valve lash and spring rate after each weekend of racing along with regular oil changes. The engine has won countless events and championships without a failure. So I would say it CAN be done. :D

I don't believe anyone is saying it can't be done. Look at the last sentence in bjuice's post above.

I would have absolutely NO WORRIES twisting a BBC to 9 grand plus........as long as it wasn't mine. :D

I second that Tod74!! my rev/lim kicks in 7200 & at that point, the fat lady has sung. But at 9000, it really needs to be in someone elses car.

I get to work with 9000 rpm and even 10,000 rpm big blocks often, ..
it's damn cool, .. and can be a fairly reliable bottom end, ..

but these are HIGH maintenance engines, .. changing or at least checking
valve springs every run, checking bearings often, .. etc, ..
and it's expensive.

If you really want to do this, .. go to a professional engine builder.

Curtis

and the above Statement comes from a professional that is around this stuff on a day to day basis..this should say it all.

Bjuice

Absolutely agree with the last 2 post, and as stated in my first post, no way without lot's of maint. that's just the way it is to run fast with lot's of RPM.

Zip

I miss my 377 shift at 9200

Will have my high revving BBC finished soon! 630+ci. Will let you know how it does. Should be running by December. It's taken me about 6 months to build so I'm ready to race!!

I would miss mine too if I tried to shift it at 9200.....cause it would explode. :lol:

but it is a 540

9000 rpm
 

I run a BBC in my duprtgsd 34 chev thats short stroke 3.72 and the 4.56 bore, we really like cuz it buzzes up real nice but takes out soime of the torque when it comes off the throttle stop.. 9.90 154mph, work well for us, freshen avery 200 runs of so

Re: 9000 rpm
 

Sounds good to me.good revs ok on cubes not too bad on maintainance.

Re: building a high rpm big block chevy
 

i think the key is good quality parts period
crank, rods,(pistons) , valve train,springs (bolts/studs)
balance it -if you want a lasting motor - just build it right
nascar engines run what all day long??- when you deal with bb, the long stroke is what is so hard on them, keep it all balanced , and im sure it could be done cheep , so many ppl are blowing smoke up ppls asses , just to make other 80,000 builders look good,and to degrade the everyday week end warriors
i remember when bb motors were nothing but high rpm engines, and the 283/ 327 /427 's were the high rpm engines-lol
so much has changed in this world its funny to sit back ,and see it
(my ford is better than your chevy, my chevy is better than your pontiac, my mopar is better)- blah blah blah-lolol
no ppl realize there all competitive, with the right combo's