5.3l?
5.3l? with all the talk about 5.3l I'm starting to think about one of these instead of a 6.0l but i don't want to be disappointed. but at less then 1/2 the cost of a 6.0 they are looking better and better. its going to be a carb'd setup with meth/water injection with a D1SC. what kind of power has people made with the 5.3l with a procharger? i don't know much about 5.3l but are there stroker cranks for a decent price? with the saving of buying a 5.3 a stroker crank seems like it would fit the budget. along with of course forged pistons and rods. are the stock heads on the 5.3 any good? or would it be wise to get some 317's? also i would like to be around 550rwhp through a th400. is that even a likely goal with a 5.3?
thanks,
Dan.
thanks,
Dan.
yes the 5.3 is a really good budget boost motor... I made 528hp 491tq with slipping 4l60E.
havent dynod since the th400 swap but i bet its over 600...
its a cheap build 5.3, 317 heads, 02 ls6 cam, diy front mount turbo.... real cheap build that performs like a champ!
havent dynod since the th400 swap but i bet its over 600...
its a cheap build 5.3, 317 heads, 02 ls6 cam, diy front mount turbo.... real cheap build that performs like a champ!
ive been doing alot more searching i think im going to go with a 5.3l.
are the stock heads on a 5.3l any good? what about getting a pair of 317's?
what is a good size to bore a 5.3l out to?
are the stock heads on a 5.3l any good? what about getting a pair of 317's?
what is a good size to bore a 5.3l out to?
317's drop compression to 8.5:1 and flow the same as 243's... alot better than the 5.3 heads..
if your going boost on a budget heres what you do:
5.3
317 heads
Good valve springs
mls gaskets
arp head bolts
02+ ls6 cam
hardened 7.425 pushrods
+
10-16psi boost
=
550rwhp+++ WITH NO METH!!!!
Trending Topics
Keep in mind that the th400 has more rotating mass so it eats up more power
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo sounds nice. thanks for the help/info
thats on ALL stock short blocks?
well i allready have meth injection sitting in the garage from a previous truck. so can the 317s be milled to bring back the compression to about 9 to 1 or 9.5:1 ?
also you said ls6 cam is that cam that good for boost? im going to be carbed would that cam still be a good choice?
what would be better to use a th400 or a 350?
thats on ALL stock short blocks?
well i allready have meth injection sitting in the garage from a previous truck. so can the 317s be milled to bring back the compression to about 9 to 1 or 9.5:1 ?
also you said ls6 cam is that cam that good for boost? im going to be carbed would that cam still be a good choice?
what would be better to use a th400 or a 350?
Last edited by danbap; Nov 29, 2009 at 01:03 PM.
got to bumb this back up top cause there needs to be a good 5.3L boost build...
I'm doing the same in an rx7... turbo'd, not supercharged. I believe most people go that route cause they can get 10lbs of boost cheaper with a turbo. ($550 for a power masters 70mm turbo, plus a few hundred more in BOV's, WG's and turbo plumbing, unless you can do exhaust yourself vs. $2300+ D1SC supercharger...) You are using a carb thoughwhich is a whole other can of worms with turbo's
Here's what I'd like to know though... You can hit the limit of the rods and pistons on stock heads... so why upgrade to the 317's? Higher compression and smaller runenrs equals faster response on the street, right? Sure the 317's flow better, but turbo's aren't that picky when it comes to port runner size, and increasing the size and dropping the compressoin from ~9.5 to 8.6:1 will be noticed down low. Bigger is better for NA applications, but not always necesary for boostest motors...
So if you can hit 600hp with stock heads, and 600hp with 317's, why switch? (this discussion assumes stock internals...)
I'm doing the same in an rx7... turbo'd, not supercharged. I believe most people go that route cause they can get 10lbs of boost cheaper with a turbo. ($550 for a power masters 70mm turbo, plus a few hundred more in BOV's, WG's and turbo plumbing, unless you can do exhaust yourself vs. $2300+ D1SC supercharger...) You are using a carb thoughwhich is a whole other can of worms with turbo's
Here's what I'd like to know though... You can hit the limit of the rods and pistons on stock heads... so why upgrade to the 317's? Higher compression and smaller runenrs equals faster response on the street, right? Sure the 317's flow better, but turbo's aren't that picky when it comes to port runner size, and increasing the size and dropping the compressoin from ~9.5 to 8.6:1 will be noticed down low. Bigger is better for NA applications, but not always necesary for boostest motors...
So if you can hit 600hp with stock heads, and 600hp with 317's, why switch? (this discussion assumes stock internals...)
Banned
Joined: Jun 2009
Posts: 132
Likes: 0
sounds nice. thanks for the help/info
thats on ALL stock short blocks?
well i allready have meth injection sitting in the garage from a previous truck. so can the 317s be milled to bring back the compression to about 9 to 1 or 9.5:1 ?
also you said ls6 cam is that cam that good for boost? im going to be carbed would that cam still be a good choice?
what would be better to use a th400 or a 350?
thats on ALL stock short blocks?
well i allready have meth injection sitting in the garage from a previous truck. so can the 317s be milled to bring back the compression to about 9 to 1 or 9.5:1 ?
also you said ls6 cam is that cam that good for boost? im going to be carbed would that cam still be a good choice?
what would be better to use a th400 or a 350?
i want to go turbo also but i already have the d1sc so im going with it. 600hp im guessing you are talking at the crank. so you dont think its possible to hit 500-550rwhp with a stock short block? i know the procharger is going to eat up some hp. and it sounds unless i go aftermarket swapping heads istn't a good idea.
i want to go turbo also but i already have the d1sc so im going with it. 600hp im guessing you are talking at the crank. so you dont think its possible to hit 500-550rwhp with a stock short block? i know the procharger is going to eat up some hp. and it sounds unless i go aftermarket swapping heads istn't a good idea.
The answer to running the 317 heads is because they flow better yes but the main reason is the ability to run more boost on pump gas and not worry about detonation. on a 5.3 that will put you at 8.5:1 compression but with the right setup you dont need to worry about lag, lol.
I am running 91 octane and 16psi with just an intercooler... dont have to worry about meth.
For as budget as my setup is its pretty nasty.
got to bumb this back up top cause there needs to be a good 5.3L boost build...
I'm doing the same in an rx7... turbo'd, not supercharged. I believe most people go that route cause they can get 10lbs of boost cheaper with a turbo. ($550 for a power masters 70mm turbo, plus a few hundred more in BOV's, WG's and turbo plumbing, unless you can do exhaust yourself vs. $2300+ D1SC supercharger...) You are using a carb thoughwhich is a whole other can of worms with turbo's
Here's what I'd like to know though... You can hit the limit of the rods and pistons on stock heads... so why upgrade to the 317's? Higher compression and smaller runenrs equals faster response on the street, right? Sure the 317's flow better, but turbo's aren't that picky when it comes to port runner size, and increasing the size and dropping the compressoin from ~9.5 to 8.6:1 will be noticed down low. Bigger is better for NA applications, but not always necesary for boostest motors...
So if you can hit 600hp with stock heads, and 600hp with 317's, why switch? (this discussion assumes stock internals...)
I'm doing the same in an rx7... turbo'd, not supercharged. I believe most people go that route cause they can get 10lbs of boost cheaper with a turbo. ($550 for a power masters 70mm turbo, plus a few hundred more in BOV's, WG's and turbo plumbing, unless you can do exhaust yourself vs. $2300+ D1SC supercharger...) You are using a carb thoughwhich is a whole other can of worms with turbo's
Here's what I'd like to know though... You can hit the limit of the rods and pistons on stock heads... so why upgrade to the 317's? Higher compression and smaller runenrs equals faster response on the street, right? Sure the 317's flow better, but turbo's aren't that picky when it comes to port runner size, and increasing the size and dropping the compressoin from ~9.5 to 8.6:1 will be noticed down low. Bigger is better for NA applications, but not always necesary for boostest motors...
So if you can hit 600hp with stock heads, and 600hp with 317's, why switch? (this discussion assumes stock internals...)
I run a master power t70/.96ar at 16psi seen them run at 22psi
317's allow you to run pump gas and not worry about detonation, they also flow better... not worrying about meth is nice.
you can hit 600hp with stock heads yes... but dont think about doing it without meth or race gas.
Heres a stock 5.3. It has nothing but valve springs and an LS6 cam. Made 681/712 to the tires just the way it is in the video. 80e trans, 9.5" rear end, 35 inch tires, 20 inch wheels.
http://www.youtube.com/watch?v=sPzUhQE6iH4
http://www.youtube.com/watch?v=sPzUhQE6iH4
1bad ls1 i thank you once again your build is a very big influence for me. i have meth/water injection already so im not worried about that as for money. is there another good flowing "cheap" head out there that wont lower the compression? i just dont seeing a 8.5:1 engine being very fun and with a blower i do have to be up in the rpms before it starts making power. and im stuck with the D1sc right now i want to go turbo but this is what i have soooo.... i have to make it work 
1bad ls1 i thank you once again your build is a very big influence for me. i have meth/water injection already so im not worried about that as for money. is there another good flowing "cheap" head out there that wont lower the compression? i just dont seeing a 8.5:1 engine being very fun and with a blower i do have to be up in the rpms before it starts making power. and im stuck with the D1sc right now i want to go turbo but this is what i have soooo.... i have to make it work
Yes you are right on the lower compression with the D1sc... wouldn't go below 9:1 IMHO...
Honestly on your setup man since you already have meth I would just run the stock heads...
get an 02+ ls6 cam, good springs, hardened pushrods, 60# injectors, walbro fuel pump...
and for some more insurance: timing chain, ported oil pump, second walbro
then drive it like you stole it! lol
everything sounds good besides the 60# injectors its going to be a blowthrough carb set up!
what is the stock compression ratio of a 5.3 i keep finding 2 different answers?
what is the stock compression ratio of a 5.3 i keep finding 2 different answers?