PACKETFOCUS

iTrader: (2)

What head bolts should I use on a LM7 5.3 with 6.0 heads for boost?

Gasket recommendation?

PACKETFOCUS

iTrader: (2)

Not exactly what year, but crank is 12552216, block is 12567392, 24x wheel

PACKETFOCUS

iTrader: (2)

Hmmm... .857 NARROW FLANGE crankshaft. Any problems with this working with a glide or turbo 400? I read somwhere on here that I needed a different flange crank .875?

Seems to me all I need is a flexplate and LS to TH400 converter

PACKETFOCUS

iTrader: (2)

found this is what I need to run a Lm7 with a Th400 or Glide

Crankshaft spacer# GM 12563532..Bolts# 12563533

salemetro

iTrader: (5)

OEM 6.0 Head gaskets and arp bolts...studs it ya wanna spend the $$$, but it all depends on how much boost ya wanna throw at it. 15-18 should be no problem with a good set of bolts.

PACKETFOCUS

iTrader: (2)

yeah this is just a budget setup to play around with a turbo on a stock shortblock. May try to push it to 20lbs for a couple passes.

Got two lm7 shortblocks on a good deal so I gotta backup hehe.

Thanks for info. Didn't know if Ls9 head gaskets would help or not.

wildcamaro

iTrader: (15)

Ls9 head gaskets are 5 or 7 layer and made for boost I would use those if possible.

chrisfrost

iTrader: (8)

There's a Youtube video of a silverado 5.3L pushes it up to 24lbs. it's a dyno vid and supposedly is crankin 2000ponies ,,,,,,,course it would'nt last too long but a cpl passes should be no problem depending on mileage of You're engines.