say this 350 spins to 6000 rpm what is the max hp this thing will take?

IF WE ARE TALKING ABOUT A CAST CRANK UP TO 350 HORSE I WOULD SAY WOULD BE SAFE AS LONG AS ROTATOR IS BALANCED AND FLYWHEEL AND PRESSURE PLATE ARE BALANCED IF USING STD.

Bout 600hp at 6000 rpm.

12lbs of boost and 2 250 horses cheater plates 100 passes and still going strong @ 9:70's

im talking about a cast crank and if this is 68 hot rod is talking about them i think i will just stick with my stock crank and go with better rods and pistons.

Originally posted by 1968 hot rod:
12lbs of boost and 2 250 horses cheater plates 100 passes and still going strong @ 9:70's I TAKE CARE OF 2 SMALL BLOCK CHEVY BLOWER ENGINES ALL ALUMINUM,ONE OF THEM HAS BUICK HEADS 370 CUBIC INCH AND A 8-71 BLOWER AND RUNS ON ALKY AND THE BEST I CAN DO WITH THAT IS ABOUT 1500 HORSE WITH 38 POUNDS OF BOOST AND YOUR MAKING 2250 HORSE WITH ONLY 12 POUNDS OF BOOST AND A STOCK 350 CRANK

BOTH OF THESE ENGINES I DO ARE TOP RUNNERS IN THERE CLASS.

WHAT THE HECK AM I DOING WRONG??? graemlins/clonk.gif graemlins/clonk.gif graemlins/clonk.gif graemlins/clonk.gif graemlins/clonk.gif graemlins/clonk.gif graemlins/clonk.gif

My stock steel crank has survived several nitrous passes (200hp), Then I cut a key way and spun a 8-71 with 12PSI, Now it supports 18psi from my turbo.

As long as the balance is good, And you use good fastners, the stock stuff is tough enough..

I also used a cast crank with a 150 shot and shifted at 6900..

i dont think he's making 2250HP. i think he's runnin (2) shots of nitruos, 250HP each.

Still got a stock cast crank in my combo. I plan on sprayin a 150-200 shot on top of it and shift at ~7200...we'll se how it works out in the spring smile.gif

The car belongs to a friend of mine,70 gto street car.I would guess it weighs 3500lbs with him in it.350 cubes makes about 155lbs cranking compression 6;71 blower 2 600 vac holleys,dart 215cc iron heads with 2 cheater plates on it jetted @ 250hp a piece.cast crank,stock rods cast pistons.i saw it run 9:76@137 Atco Dragway with a 1.32 60fttwisted the axle tube in the process.I think he's a nutz myself but its stayed together for a year or so evidently he has a good tune up.
Cnc I don't know what your doing wrong how fast do those cars go?This combo might make 700 with boost and spray to run those numbers I'd guess with that 60ft.If I can get the time slip from him so you guys can analize the incrementals I will post it.

Originally posted by 1968 hot rod:
The car belongs to a friend of mine,70 gto street car.I would guess it weighs 3500lbs with him in it.350 cubes makes about 155lbs cranking compression 6;71 blower 2 600 vac holleys,dart 215cc iron heads with 2 cheater plates on it jetted @ 250hp a piece.cast crank,stock rods cast pistons.i saw it run 9:76@137 Atco Dragway with a 1.32 60fttwisted the axle tube in the process.I think he's a nutz myself but its stayed together for a year or so evidently he has a good tune up.
Cnc I don't know what your doing wrong how fast do those cars go?This combo might make 700 with boost and spray to run those numbers I'd guess with that 60ft.If I can get the time slip from him so you guys can analize the incrementals I will post it. ON MY POST I SHOULD HAVE SAID THAT 85% OF THE ENGINES I DO ARE FOR CIRCLE TRACK APPLICATIONS
AND RUN MORE THEN 10 SECONDS AT A TIME, SOME OF THESE ENGINES RUN UP TO 6500 LAPS IN A SEASON.AND MAKE UP TO 600 HORSE. IN THIS ENVIORMENT A CAST CRANK WITH NO RADIUS JUST WON'T MAKE IT. I KNOW I SEEN GUYS TRY THIS AND NOT HAVE GOOD LUCK.

THE 2 BLOWER ENGINES I DO RUN UP IN CANADA IN THE TRACTOR PULLING CLASS,ALL ALUMINUN WITH 8-71 LITTLE FEILD BLOWERS ON ALKY, ONE WITH 18 DEGREE
CHEVY HEADS AND THE OTHER HAS BUICK HEADS AND RUN
FOR ABOUT 20 SECONDS AT A TIME AND I SEE THEM ENGINES EVERY 2 YEARS FOR FRESHEN UPS. THESE ENGINES ARE ABOUT 36000 DOLLARS A PIECE, I DON'T THINK THEY WOULD LAST LONG WITH A CAST CRANK.

AND WHAT DO YOU MEAN BY SAYING (I DON'T KNOW WHAT YOUR DOING WRONG)

Cnc
When you type in CAPS it implies your shouting.
Reread you post you asked:
"What the heck am I doing wrong" in the last sentence sarcasticly.When you implied that what I posted was Bullsh**t.IMHO I don't think your doing anything wrong if you can make that type of power and make it live,none of this is sarcastic so don't take it that way.As you stated you can get away with more abuse drag racing than a circle track application.

1968 HOT ROD
I TYPE ALL MY POSTS IN CAPS ITS FASTER FOR ME AND I DON'T IMPLY ANY ANGER WHEN I DO THAT DIDN'T MEAN TO MISLEAD YOU.

I ONLY DO THIS TO HELP PEOPLE OUT HERE AND MAYBE LEARN SOMETHING AS WELL AND I THINK THIS IS A GREAT WEB-SITE AND HOPE TO BE HERE FOR A WHILE.
CARL

Carl
What is the typical price for a BBC square decked,bore plate hone,line bored etc?
Is your Haas a horizontal mill?

Hey Orange Juiced what rods do you have in your engine?

1968 HOT ROD
SQUARE AND DECK TO ZERO 160.00
BORE TO PRINT OR PROBED LOCATION 150.00
PLATE HONE 150.00
LINE HONE 160.00

I WOULD REPLACE GM HARDWARE WITH ARP BOLT KIT
AND IF WE HAD TO CLEAN AND MAG ADD 90.00
AND FREE SHIPPING ON THE WAY BACK TO YOU.
ITS A VERTICAL MACHINE

THANKS FOR YOUR INTEREST CARL

CNC -
I don't mean to be mean to you - but when you type in caps you imply shouting to everyone else reading your post, whether or not you mean it. For the courtesy of others, caps are only used if you need to shout something.

That said, it looks like you have a real nice shop up there. I'm sure your presence here on the board will be very welcome.

Ryan

Ryan
I'll try to change, I'm a creature of habit and never thought of it that way and I see your point, Thanks

Also thanks for comments on my shop its been a long 28 years getting this far.
Carl

Originally posted by Chopper:
Hey Orange Juiced what rods do you have in your engine? Chopper, i have the Eagle SIR rods. Theyre rated at 500 hp, and i should be pushing close to 750 on a 200 shot. Im really not expecting this motor to last long. Its more of an experiment than anything. smile.gif I dont reccomend anybody follow the path ive chosen. My motor will probably be in 1000 pieces by the end of next season :D

I used a stock GM Cast crank for about 6 yrs. In my 355 The engine made 480 HP at the rear wheels and I made well over 800 passes at the track with it. I finally took it out after it needed turning again and was already at .030 / .030.
Just like anything else.. some will last forever and take abuse you never expected it to and others will die for no apparent reason
Duane

I have been racing a 69 ElCamino in G/SA for the past 4 years.Its a 2 bolt cast crank all stock engine that runs 11.40's all day.Good fasteners(ARP)and attention to detail when you build and stock parts are plenty strong.Btw,cast crank 2 bolt block is lighter than forged crank 4 bolt block.Lower weight=go faster:)
Steve