The much hated longtube and turbo question!
05-25-2007, 04:39 PM
#1
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The much hated longtube and turbo question! muahaha..well here me out.
is it really to my advantage having a built motor, to go back to manifolds for a turbo?
i know that for stock the debate is clear,MANIFOLDS KICK ***.
but im running these motor modifications..
Motor-383ci stroker:
Internally balanced, blueprinted, decked/Bored .030 over lt-1 block
ARP bolts/studs
Eagle 4340 internally balanced crank
Eagle "h" beam connecting rods
Comp Cams high energy hydraulic lifters
Comp Cams 1.6 roller rocker
Comp Cams chromemoly pushrods
Cloyes double roller timing chain
Wiseco dish pistons/ring kit with floating wrist pins
Comp Cam custom 230/244 cam 580 lift w/ 114
lobe seperation
setup for roughly 10/10.5-1 compression
NGK TR-55 plugs
MSD 8.5 wires
Mellings high volume oil pump
Intake:
ported and polished lt-1 intake(to match heads and throttle body)
BBK 58mm throttle body
ported and polished lt-1 heads with Ferrea valves, guides, retainers
AFR Hydra rev kit
AERO adjustable fuel pressure regulator
EGR delete
Ford 30lb injectors
im thinking with that much stuff done i might be just fine keeping my long tubes and running only 5-7lbs of boost.
if i go higher than that with a meth kit down the road i might consider more strongly the manifolds but i think ill have enough back pressure with those mods for a t70. .68ar and a 38mm wastegate.
is it really to my advantage having a built motor, to go back to manifolds for a turbo?
i know that for stock the debate is clear,MANIFOLDS KICK ***.
but im running these motor modifications..
Motor-383ci stroker:
Internally balanced, blueprinted, decked/Bored .030 over lt-1 block
ARP bolts/studs
Eagle 4340 internally balanced crank
Eagle "h" beam connecting rods
Comp Cams high energy hydraulic lifters
Comp Cams 1.6 roller rocker
Comp Cams chromemoly pushrods
Cloyes double roller timing chain
Wiseco dish pistons/ring kit with floating wrist pins
Comp Cam custom 230/244 cam 580 lift w/ 114
lobe seperation
setup for roughly 10/10.5-1 compression
NGK TR-55 plugs
MSD 8.5 wires
Mellings high volume oil pump
Intake:
ported and polished lt-1 intake(to match heads and throttle body)
BBK 58mm throttle body
ported and polished lt-1 heads with Ferrea valves, guides, retainers
AFR Hydra rev kit
AERO adjustable fuel pressure regulator
EGR delete
Ford 30lb injectors
im thinking with that much stuff done i might be just fine keeping my long tubes and running only 5-7lbs of boost.
if i go higher than that with a meth kit down the road i might consider more strongly the manifolds but i think ill have enough back pressure with those mods for a t70. .68ar and a 38mm wastegate.
05-25-2007, 05:22 PM
#2
If you are talking about a rear mounted turbo, there is no better solution to aid in spool than stock manifolds.
Stock manifolds should lower your backpressure vs headers.
A t70 is really small for that size motor, T76 minimum. .81 a/r works great.
Your comp is really high to be going FI on pump gas.
Stock manifolds should lower your backpressure vs headers.
A t70 is really small for that size motor, T76 minimum. .81 a/r works great.
Your comp is really high to be going FI on pump gas.
05-25-2007, 08:16 PM
#5
Originally Posted by 95 Camaro Z28
so is a t70 not even worth buying then?
05-26-2007, 09:46 AM
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have stock LQ4 block with rod bolt, head stud, main stud, cometic gaskets and plasma moly file fit rings how much boost can i put on it, with race gas before get into trouble
05-26-2007, 10:45 AM
#7
Originally Posted by 2fast02TA
have stock LQ4 block with rod bolt, head stud, main stud, cometic gaskets and plasma moly file fit rings how much boost can i put on it, with race gas before get into trouble
