whether or not its been posted before, here it is again. i did a search and didnt come up with much, just looking for some opinions.

first, 500-550 hp at the crank is a must, whatever that means to the wheels is secondary. can the stock bottom end take this kind of abuse on a weekend to weekend schedule? i'm talking about just doing the full bolt-ons, along with rockers, cam, intake, and heads (the specifics have yet to be ironed out). if needed, possibly N2O, but that's a worst case scenario. first i need to know if the stock bottom end can handle that kind of power and for how long.

i don't know if i feel comfortable spinning the stock b/e to upwards of 6500 RPM, especially on a 2-bolt main.

the motor(1994 LT1) has 85,000 miles on it and is all stock.

if the stock LT1 bottom end can't take this, then i'll be looking into another Chevy small block crate motor, because big block takes a little more fabbing than i'm looking for to fit in, and i'd rather buy something w/ a strong b/e to start off with for a reasonably cheap price(like a ZZ4 crate motor or something of the sort) and make that pretty radical.

i'm just throwing ideas around right now, hit me with your thoughts.

 

I wouldn't throw 550 horse at stock bottom end, and if I did, I wouldn't expect it to live very long.

To be honest, I wouldn't do any of your options. I would rebuild the LT1 with a solid forged rotating assembly and then you would have a motor that could tolerate 550 horse for a long time.

 

point taken. anyone else?

 

my car yields WAY over 550fhp on the dyno on the "just in case/lets get froggy" button.. BUT i am not foolish and spray the **** outta it, matter of fact i have gone through 1 bottle in 6 months ...

With 503rwhp on n2o however I take care of my car and realize that stock bottom end was designed to exceed the 275hp rating, but not by 300 horses...


Build yourself a HIGH compression (min 11.0:1) 355 set up for a big shot of nitrous... you'll be there with room to spare...

Forged bottom end
AFR's
+TNT
------------
the death for many to come

 

Throwing a sbc chevy crate motor would be just retarded, you can achieve at MINIMUM 400 flywheel ponies with a head and cam swap... The crate motor would just be expensive and then you STILL have those hyperpathetic pistons to throw away...

 

I made 447 RWHP and 470 RWTQ with a 115k miles on stock bottem end daily driver so est. 536 FWHP 564 FWHP and there are alot more people out there making more power than me but I don't know if too many of them have as many miles as I do.

 

LT4 conversion kit, but ditch the Hotcam and throw in a CC306 cam...anyone had any experience with this setup???

 

ttt for the nightime crew

 

spin mine to 7k couple times and 6800 atleast once each time i drive the car. daily driver.
on n2o makes right around the 500 rwhp mark

 

i think that 550 hp at the fly is kindda pushin it, but it can still manage. what i have an issue with is at what RPM will you be revving it up to? high rpms have more destructive power than just a few spurts of full power, IMO.



as far as high compression and nitrous? uhm, i thought nitrous was for low compression pistons.

 

plenty of people are running N2O on the stock compression, even on stock motors for that matter, its really not that big of a deal if you're not using it every single time you drive the car.

i wont know exactly how high to run it until we're finished and i can get a few dyno pulls in to really optimize my shift points. i'm guessing somewhere in the 6400-6700 RPM region, but that's merely a guess.