how strong are lsj crank's?
#1
Senior Member
Thread Starter
Join Date: 11-10-06
Location: Avon/Danville, Indy
Posts: 594
Likes: 0
Received 0 Likes
on
0 Posts
how strong are lsj crank's?
i am getting ready to put a ton of crap on my balt and i am told that with everything on that it should make about 330 hp. i have also heard that the lsj cranks break around 320-350 hp. anyone have any solid proof or know about this?
#4
Senior Member
Thread Starter
Join Date: 11-10-06
Location: Avon/Danville, Indy
Posts: 594
Likes: 0
Received 0 Likes
on
0 Posts
no having serious head work and probably cams. i hear that i should expect around 330 hp after i do the head work. and that is without exhaust or intake. which will also be going on. so i'll be looking at about 340-350.
#6
i have heard this...........but after riding\driving in rice's car i dont see this at all......... his did break but for the reason listed above........look at pauls turbo car.......hes way into the 20+ psi's just fine..........i would be more worried about the rods they r the second weak point......pistons r the real problem tho cause of heat and what not.........
#10
Rattlesnake Race Shop
iTrader: (1)
I have spoke to GM on the issue a few times, and they say that once you start approaching 400hp, you should change the rods... so realistically, they can probably hold 450 or so.
As far as the Crank, that thing is supposed to be Bulletproof as long as you've got everything running like it should. It should hold 500-600+hp easily.
As far as the Crank, that thing is supposed to be Bulletproof as long as you've got everything running like it should. It should hold 500-600+hp easily.
#12
Senior Member
Thread Starter
Join Date: 11-10-06
Location: Avon/Danville, Indy
Posts: 594
Likes: 0
Received 0 Likes
on
0 Posts
i am expecting to have to change out the pistons and rods eventually. they aren't something that i am real worried about right away. i have the gm build book. so i know when i should have to change things. but in one part of the book it says that the crank is good to like 300 and the other says i think 500 or 600. but cranks don't get taken out by the HP. its the RPM's. so i guess i'll just change my redline with hptuners at about 7,000. and not go over that. i don't know
#14
Rattlesnake Race Shop
iTrader: (1)
i am expecting to have to change out the pistons and rods eventually. they aren't something that i am real worried about right away. i have the gm build book. so i know when i should have to change things. but in one part of the book it says that the crank is good to like 300 and the other says i think 500 or 600. but cranks don't get taken out by the HP. its the RPM's. so i guess i'll just change my redline with hptuners at about 7,000. and not go over that. i don't know
Yeah... that's a good idea.
#15
Senior Member
Join Date: 04-03-06
Location: Mesa, AZ
Posts: 7,571
Likes: 0
Received 0 Likes
on
0 Posts
The RPM is all about the balance. A full racing crank, balanced incorrectly will snap at idle if its bad enough. My crank is at a zero balance, meaning there is no variation or vibration when its spinning. My crank is safe to spin to 12,000 rpm because of the extreme balance. Also a better balanced crank makes better power because it spins freer.
#16
The RPM is all about the balance. A full racing crank, balanced incorrectly will snap at idle if its bad enough. My crank is at a zero balance, meaning there is no variation or vibration when its spinning. My crank is safe to spin to 12,000 rpm because of the extreme balance. Also a better balanced crank makes better power because it spins freer.
#17
Senior Member
This thread is very helpful..subscribing. So neutral balance shafts are great internals to get, along with piston rods and actual pistons, eh? And you should get your crank balanced as well as getting valve springs?
#18
Senior Member
iTrader: (1)
Join Date: 01-23-06
Location: on here
Posts: 10,731
Likes: 0
Received 0 Likes
on
0 Posts
depends on what power you want and how hard you wanna run the car. valve springs and neutral balance shafts are for higher reviing cars, pistons need to be upgraded when you start throwing too much heat and power at them.
#19
Senior Member
Join Date: 04-03-06
Location: Mesa, AZ
Posts: 7,571
Likes: 0
Received 0 Likes
on
0 Posts
#20
Senior Member
Thread
Thread Starter
Forum
Replies
Last Post