sahwan

Hi


I blow up my ls2 engine and I have 5.3 short block I want to use it




Before I use ls2 short block
317 heads
Ls9 head gaskets
Ls9 cam
Turbo Borg Warner s375 with 1.32 a/r


Can I use my old stuff in 5.3 with ls2 heads ??



How much power can 5.3 short block can Handel ???



It's for fun only

HexenLord

What blew on the LS2?

That stuff will swap over to the 5.3, but you'll need the LS2 timing pieces.

3rd gen 5.3 shortblocks don't start to bend rods until 700 or so flywheel HP. 4th gen, probably a lot higher.

sahwan

It's not blow up its rod bearing moved and the crank have some damage

sahwan

Ls9 is not big for 5.3 ??


And Borg Warner s475 with 1.32 a/r will be good for 5.3??


My transmission is t56

GTO Eric

iTrader: (6)

I'm currently running an 2005 5.3 in my originally LS2 powered GTO.
The 5.3 is taking every bit of 20-22 psi from my S475

I am running a much bigger cam then the LS9 so you will be fine. Also if its a GEN 4 engine everything will swap over easily. If you are using a GEN 3 engine it is still easily done. Knock sensor locations are different and you'll need to use your LS2 front cover and cam gear.
Just make sure your crank trigger wheel is the same as your LS2s. 24x or 58x.

gnx7

iTrader: (28)

Turn the crank and put in new bearings.... slap the LS2 back together. light cylinder hone with new rings if you want to do a cheap rebuild. That's what I'd do.

Or slap in 5.3 and once the LS2 is rebuilt put it back in.