Where is your ls rev limiter set?

JSmithey · Sep 7, 2016

My 5.3 lived a long time at 6000 but then I installed a cam and went 6800 and it came apart first weekend out. So what's fairly safe for a stock bottom end? Or safe for arp rods and mains?

Jduck · Sep 7, 2016

Sounds like 6000 is safe for a 5.3

lowbudgetjunk · Sep 7, 2016

Re: Where is your ls rev limiter se

I imagine miles, abuse on said engine, oil and filter changes, etc will have some bearing on it as well......and x2 for that guy ^^^^^^^^

JSmithey · Sep 7, 2016

Jduck said:
Sounds like 6000 is safe for a 5.3

Haha it was a lot of fun at 6800 though. I just don't want to swap motors that often

SHELBS44 · Sep 7, 2016

Hmmm I'm wondering this too. Building a lq9 6.0 with cam arp head studs upgraded pistons and bearings and all will be new with a 200-250 shot on it. What y'all think my safe rev limit should be? No being a smartass actually asking. First ls build

ranger11 · Sep 7, 2016

Re:

Set it right before it blows. May take a fee more motors to figure out that number. Lol.

Jk. I have s 5.3 and I'm curious as well

d_daffron · Sep 7, 2016

Josh, I'd consider some upgraded rods before you hit that LQ9 with a 250 shot of spray especially if it doesnt have the full float wrist pins. You can ask Meghan those powdered metal rods are not as strong as you'd think. Hell, she isnt even that rough on **** and she did this...

tonybolton · Sep 7, 2016

Lol....Mines usually set here.

zukimaster · Sep 7, 2016

Unless you change rods, crank etc. I would not turn it more than 6k.

fordcontraption01 · Sep 7, 2016

My little 302 is factory 6250 and I sometimes just let it eat on that until it gets hot or I don't make it :****: not being a smart ass and yea I know you said ls motors also

TURNEROFFROAD · Sep 7, 2016

Where Trenton Parks... He ought to know...

bjeep · Sep 7, 2016

zukimaster said:
Unless you change rods, crank etc. I would not turn it more than 6k.

Yeah 6000-6200 is all I would want to turn one as well. :woot:

pholmann · Sep 7, 2016

Mines set at 6000-6200 i believe.

kmcminn · Sep 7, 2016

pholmann said:
Mines set at 6000-6200 i believe.

:smoke:

Is 8k or 9k even b a possibility in a LS platform engine? Reason I ask is I heard one at Srrs GR and it sounded crazy high rpms. No turbo regular headers.

If my memory serves me I think my LT is 5200.

zukimaster · Sep 7, 2016

Spend enough money, anything is possible.

TacomaJD · Sep 7, 2016

My ole single cylinder Polaris 570 spins up to 6950 on a top speed run....never seen 7k yet... :flipoff1:

Lol

1tfrot · Sep 7, 2016

pretty sure my lq4 is somewhere around 6200 range (no tach, but tuner said something like that).

custom cam
texas speed heads
arp studs

she sounds good wide open

Mortalis5509 · Sep 8, 2016

Re: Re:

ranger11 said:
Set it right before it blows. May take a fee more motors to figure out that number. Lol.

Jk. I have s 5.3 and I'm curious as well

Yours is set on a hard limit into the 6's. I think it was 6400 - 6500.

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Mortalis5509 · Sep 8, 2016

Re: Re: Where is your ls rev limiter set?

kmcminn said:
:smoke:

Is 8k or 9k even b a possibility in a LS platform engine? Reason I ask is I heard one at Srrs GR and it sounded crazy high rpms. No turbo regular headers.

If my memory serves me I think my LT is 5200.

I was told yes by a builder in person, and not some damn "reading". Forged lowers with all the right bolts and what nots. The top will need a lot of work not to float the valves.

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