70 gtq BB precision with .96 ar 4 bolt housing on 5.3 ls

sdteb

trying to get it like you
Joined
Feb 10, 2003
any thoughts on this setup? i already had the 70 gtq, so i bought a .96 ar ex housing from limit to make it 4 bolt to put on 5.3 ls im building...

any thoughts on power? ported ls heads from texas speed with their turbo ls cam. stroker crank etc. ls2 intake...in my daughters gn drag car. 3k lbs with her in it approx
 

Chuck Leeper

Toxic old bastard
Staff member
Joined
May 28, 2001
Donations
$50.00
Might you have a compressor map for that turbo?
What's the new displacement with the stroker?
 

Mr.Spool

Well-Known Member
Joined
Nov 6, 2006
any thoughts on this setup? i already had the 70 gtq, so i bought a .96 ar ex housing from limit to make it 4 bolt to put on 5.3 ls im building...
It will lite up fast on that combo and
That compressor is small for that motor combo.
The turbine wheel and housing will out flow the compressor wheel significantly it's very old compressor teck.
I understand you have it.
So it will spool fast and make right to where the compressor runs out.
You could send it out and have a new compressor put on it 76mm is what I would recommend.
 

V6sleeper

Well-Known Member
Joined
Jan 18, 2011
Donations
$150.00
I agree with Mr.spool, although 70mm is pretty big for the v6 its pretty small for the 5.3 v8 it might be out of breath low in the rpm's. look into a 7675 .81ar
 

sdteb

trying to get it like you
Joined
Feb 10, 2003
It will lite up fast on that combo and
That compressor is small for that motor combo.
The turbine wheel and housing will out flow the compressor wheel significantly it's very old compressor teck.
I understand you have it.
So it will spool fast and make right to where the compressor runs out.
You could send it out and have a new compressor put on it 76mm is what I would recommend.
who could do that for me?
 

SCOOBY DOO

I'M NOT A MONSTER, I'M JUST AHEAD OF THE CURVE!!!
Joined
Feb 18, 2007
I know you're asking for a 5.3 but a local went 9.68 at 138 with one of these 109's with a 70GTQ.
 

Chuck Leeper

Toxic old bastard
Staff member
Joined
May 28, 2001
Donations
$50.00
"What's the new displacement with the stroker"?
Comparing this unknown engine size to what the turbo can/did do on a 109 is inaccurate.
 

TTA976

Active Member
Joined
Jun 22, 2014
t70.jpg
 

sdteb

trying to get it like you
Joined
Feb 10, 2003
so, is this a bad turbo to use on an LS? it will be used on my daughters first drag car....mainly 1/8th
 

V6sleeper

Well-Known Member
Joined
Jan 18, 2011
Donations
$150.00

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