500 rwhp 5.3l

[949c1]

I'm looking to make 500rwhp with a 5.3l. what i'm looking at doing is a twin turbo setup (10lbs of boost). What kind of cam and valvetrain should i get to reach this point?

[the_target]

before you start with the top end I would look at building the bottom end.

[1989K1500]

Originally Posted by 949c1

I'm looking to make 500rwhp with a 5.3l. what i'm looking at doing is a twin turbo setup (10lbs of boost). What kind of cam and valvetrain should i get to reach this point?

So what are you looking to do, just make 500 rwhp, you dont care what else it does?

[kybray44]

he wants to go fassssssst

[XLR8N]

yeah, have you made the bottom end bulletproof yet?

[the_husk]

A 5.3 can handle 500rwhp easy if the tune is there. I would get a turbo cam custom ground. What you do is tell the manufacturer your specs and what it's going to be used for and they will custom make you a cam, but remember to inform them that its going in a turbo'd application. I would run hardened pushrods and double springs.

[Gran Patron]

There's one at PT's.net with a 'charger and some NOS and a boost cam that made 533rwhp I believe. He's name is trevor.

[garrissonj]

Man you need to get on a truck site thats more performance based bud like Ls1truck.com or performancetrucks.net anyways pushing 500rwhp outta a stock 5.3 is very doable ill prove it in about 3 weeks, but just remember the 5.3 only has a 600hp crank shaft, which means you start pushing 600+ HP at the flexplate/flywheel youre gonna rip that bitch apart, im at 400HP at the flexplate 350 to the wheels all on a stock block and stock heads, and im about to squeeze a 200 shot to it, it'll be really close to the 600hp limit but it should be fine. Anyways your cam depends on what youre gonna do. Turbo, supercharged, NOS, N/A, it all depends on what kinda set up you are going to do, all different cams work better for your specific application, like my cam is a good all motor cam but also works well with the juice, anyways jump your ass over to ls1truck.com and ask this question there is an abundance of guys over there that will give you some good info. I mean i could sit here and tell you everything, to get it done, plan on spending at least around $5,000 thats if you do all the work yourself and just shoot the spray to it.

[the_husk]

Originally Posted by garrissonj

Man you need to get on a truck site thats more performance based bud like Ls1truck.com or performancetrucks.net anyways pushing 500rwhp outta a stock 5.3 is very doable ill prove it in about 3 weeks, but just remember the 5.3 only has a 600hp crank shaft, which means you start pushing 600+ HP at the flexplate/flywheel youre gonna rip that bitch apart, im at 400HP at the flexplate 350 to the wheels all on a stock block and stock heads, and im about to squeeze a 200 shot to it, it'll be really close to the 600hp limit but it should be fine. Anyways your cam depends on what youre gonna do. Turbo, supercharged, NOS, N/A, it all depends on what kinda set up you are going to do, all different cams work better for your specific application, like my cam is a good all motor cam but also works well with the juice, anyways jump your ass over to ls1truck.com and ask this question there is an abundance of guys over there that will give you some good info.

Parish got a little more than 600hp out of the stock engine... . Then he switched to a 6.0

[garrissonj]

Originally Posted by the_husk

Parish got a little more than 600hp out of the stock engine... . Then he switched to a 6.0

yea didnt say it wasnt possible its just the motor probably isnt gonna last long, and im pretty sure parish went to a 408 i could be wrong.

[91_bowtie]

Originally Posted by garrissonj

Man you need to get on a truck site thats more performance based bud like Ls1truck.com or performancetrucks.net anyways pushing 500rwhp outta a stock 5.3 is very doable ill prove it in about 3 weeks, but just remember the 5.3 only has a 600hp crank shaft, which means you start pushing 600+ HP at the flexplate/flywheel youre gonna rip that bitch apart, im at 400HP at the flexplate 350 to the wheels all on a stock block and stock heads, and im about to squeeze a 200 shot to it, it'll be really close to the 600hp limit but it should be fine. Anyways your cam depends on what youre gonna do. Turbo, supercharged, NOS, N/A, it all depends on what kinda set up you are going to do, all different cams work better for your specific application, like my cam is a good all motor cam but also works well with the juice, anyways jump your ass over to ls1truck.com and ask this question there is an abundance of guys over there that will give you some good info. I mean i could sit here and tell you everything, to get it done, plan on spending at least around $5,000 thats if you do all the work yourself and just shoot the spray to it.

wow... It sounds like you have some learning to do yourself.



Why do you want a twin setup? You could easily attain your goal with a single turbo, and it'll be much cheaper.

[dc96819]

Twins.1 turbo would be good enough on that 5.3

[the_husk]

Originally Posted by garrissonj

yea didnt say it wasnt possible its just the motor probably isnt gonna last long, and im pretty sure parish went to a 408 i could be wrong.

Yeah he went to a 408 after the 6.0. With the stock 6.0 he laid down 1000+hp/tq. He never got the 408 running right to my knowledge.. and sold it.

What i mean was he couldn't get it to leave right at the line and never really cranked up the boost on the 408.

[XLR8N]

Originally Posted by dc96819

Twins.1 turbo would be good enough on that 5.3

turbo lag is in the past nowadays.

[the_husk]

Originally Posted by XLR8N

turbo lag is in the past nowadays.

As long as you don't get an insanely big turbo on the stock engine! you can run a little larger turbo but just make sure you get the right a/r sizing and it'll spool quickly.

[garrissonj]

Originally Posted by 91_bowtie

wow... It sounds like you have some learning to do yourself.

Well why dont you learn me something than.

[garrissonj]

Originally Posted by the_husk

Yeah he went to a 408 after the 6.0. With the stock 6.0 he laid down 1000+hp/tq. He never got the 408 running right to my knowledge.. and sold it.

What i mean was he couldn't get it to leave right at the line and never really cranked up the boost on the 408.

i just read that post again, he may have got 1000 hp outta a 6.0 but it damn sure wasnt stock, i know the video youre talking about, i garauntee he had after market crank, heads, and internals. On a stock crank and block the stock rods and pistons start letting go at around 600hp so maybe you didnt mean to put stock 6.0

[91_bowtie]

Originally Posted by garrissonj

i garauntee he had after market crank

wanna bet?

[1989K1500]

Originally Posted by 91_bowtie

wanna bet?

Ive got $50 on your side. I need some gas money.

I didnt even know Parish had a 6.0 in it, I thought he went right to the 408 first with a single turbo then the twins.

[the_husk]

Originally Posted by garrissonj

i just read that post again, he may have got 1000 hp outta a 6.0 but it damn sure wasnt stock, i know the video youre talking about, i garauntee he had after market crank, heads, and internals. On a stock crank and block the stock rods and pistons start letting go at around 600hp so maybe you didnt mean to put stock 6.0

No it was stock, just a change to a different cam, I cant remember. I have talked to him on this issue. He is also running the current fastest stock ls shortblock right now in his fairmont. He is in the 9's with a stock 5.3 except a cam swap pure boost fed.