To 5.3 or not to 5.3, that is the question...

Reply Subscribe

Thread Tools

Search this Thread

Mar 13, 2021 | 04:33 PM

magius231

Thread Starter

TECH Resident

iTrader: (8)

Joined: Aug 2005

Posts: 753

Likes: 5

From: Winston Salem, NC

To 5.3 or not to 5.3, that is the question...

So I have an LS1 already...200k miles on it so it’s probably not worth a ton at this point plus I would need to keep the oil pan, accessories, and intake. Would you pull the LS1 and go 5.3 for your sloppy turbo build hoping someone will buy the rest of it or just cam/turbo the LS1 and run it till it dies? Questions questions...

Mar 13, 2021 | 06:43 PM

LilJayV10

TECH Senior Member

iTrader: (39)

Joined: Apr 2007

Posts: 9,711

Likes: 999

From: Evansville,IN

What are your power goals?

Mar 13, 2021 | 07:30 PM

Pro Stock John

LS1Tech Co-Founder

iTrader: (34)

Joined: Nov 2001

Posts: 45,326

Likes: 1,767

From: Chicago, IL

Not gonna get much for a 200K 5.7... Also curious about your power goals.

Mar 13, 2021 | 08:16 PM

magius231

Thread Starter

TECH Resident

iTrader: (8)

Joined: Aug 2005

Posts: 753

Likes: 5

From: Winston Salem, NC

Right around 550-600rwhp is probably where I’ll stay. That’s already more than enough to break the rest of the car 🙂

Mar 13, 2021 | 10:02 PM

007FJ

TECH Resident

iTrader: (28)

Joined: May 2014

Posts: 873

Likes: 64

From: Texas Gulf Coast

Turbo the ls1. It should be fine at 600 max especially if it’s mechanically sound. Set of valve springs though for sure. Keep mild timing and a good fuel system. Something like a 7875 vs Or whatever of whichever expense level that suits you. Add some deka 80s. Single 450 ought to get the pump side satisfied.