87 Iroc-Z 6.0L Turbo Build
04-19-2010, 07:24 PM
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87 Iroc-Z 6.0L Turbo Build Well the car has been through many stages till now here is a quick run down..
355 LT1- 12.90@107mph (314whp/314wtq)(4l60e)
383 LT1- 11.79@114mph (411rwhp/396wtq)(4l60e)
383 LT1 74mm Turbo @ 8psi (583whp/491wtq)(th400)
NOW I just sold all my 383 stuff after finding a cracked the crank so decided now is the time to go LS.
I ended up picking up a LQ4 out of a 2001 2500HD Silverado for 500 bucks complete harnes ,pan to intake cover.
Also the car is currently getting body work done (mazda speed red
, a 8pnt cage (should go 10pnt but oh well)
So here is a run down of the parts I have bought/waiting to get for the engine.
Plans for the build....
2001 LQ4 6.0L
Bore it .030 over (370ci)
Compstar H-Beam rods (6.125) (ARP2000 bolts)
Wiseco -11CC Forged Pistons
Stock Heads (cleaned up/valve job)
Patriot Dual springs .650 lift
SpeedInc. 236/236 turbo cam (TU2)
JP Double Rollar timing chain
Melling Oil pump
LS7 Lifters
LS9 Head Gaskets
ARP STUDS EVERYWHERE
Victor JR Intake
Fast 1375CFM 4bbl Throttle body
Turbo System
Garrett T6 74mm turbo
6.0L manifolds modified (or custom headers)
2.5inch Crossover
50mm Synapse Gate
50mm Tial BOV
4 or 5inch DP
Meth
31x12x3 intercooler (may go bigger)
Plans on 15-20PSI
Drivetrain
Built TH400
Trans Brake
Reverse Manual
Moser 9inch
3.00 Gear (Spool)
Goals
700-800whp
9.99 1/4 mile at least!
355 LT1- 12.90@107mph (314whp/314wtq)(4l60e)
383 LT1- 11.79@114mph (411rwhp/396wtq)(4l60e)
383 LT1 74mm Turbo @ 8psi (583whp/491wtq)(th400)
NOW I just sold all my 383 stuff after finding a cracked the crank so decided now is the time to go LS.
I ended up picking up a LQ4 out of a 2001 2500HD Silverado for 500 bucks complete harnes ,pan to intake cover.
Also the car is currently getting body work done (mazda speed red
, a 8pnt cage (should go 10pnt but oh well) So here is a run down of the parts I have bought/waiting to get for the engine.
Plans for the build....
2001 LQ4 6.0L
Bore it .030 over (370ci)
Compstar H-Beam rods (6.125) (ARP2000 bolts)
Wiseco -11CC Forged Pistons
Stock Heads (cleaned up/valve job)
Patriot Dual springs .650 lift
SpeedInc. 236/236 turbo cam (TU2)
JP Double Rollar timing chain
Melling Oil pump
LS7 Lifters
LS9 Head Gaskets
ARP STUDS EVERYWHERE
Victor JR Intake
Fast 1375CFM 4bbl Throttle body
Turbo System
Garrett T6 74mm turbo
6.0L manifolds modified (or custom headers)
2.5inch Crossover
50mm Synapse Gate
50mm Tial BOV
4 or 5inch DP
Meth
31x12x3 intercooler (may go bigger)
Plans on 15-20PSI
Drivetrain
Built TH400
Trans Brake
Reverse Manual
Moser 9inch
3.00 Gear (Spool)
Goals
700-800whp
9.99 1/4 mile at least!
Last edited by jay_rich; 04-22-2010 at 07:34 PM.
04-19-2010, 07:25 PM
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04-19-2010, 08:54 PM
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Okay im doing the same build and I had a couple. Questions
Can you use the ls9. Gaskets on a. 30 overbore?
And patriot recommended the extreme springs for my Turbo build
Can you use the ls9. Gaskets on a. 30 overbore?
And patriot recommended the extreme springs for my Turbo build
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04-19-2010, 09:06 PM
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also i went with the regular patriots bc summit had them and I was spending 2000 there anyways haha.
My cam is only a .588 lift anyways.
Jay
04-19-2010, 10:03 PM
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hahaha never!!! TH400 is good for me! A glide would probablly get annoying on the street, I drive this car on the street alot and drive 200KM to the track (i know the glides 2nd is a 1:1 like a th400)
Jay
Jay
04-21-2010, 12:15 AM
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Finally got the crank pulley off, now I have a bare block!
Also started unpinning the stock truck harness to delete everything not needed, emissions, rear o2's, oil pressure, maf, ac, transmission etc
started out nice and then ended messy once I undid all the loom and all the harness turned into a big ball haha.
Im gonna get all the sensors in place on the motor tomorrow and do it all on the motor to make it easier haha
Ill have some more pics soon
Also awaiting my motor mounts so I can start my hotside!
Jay
Also started unpinning the stock truck harness to delete everything not needed, emissions, rear o2's, oil pressure, maf, ac, transmission etc
started out nice and then ended messy once I undid all the loom and all the harness turned into a big ball haha.
Im gonna get all the sensors in place on the motor tomorrow and do it all on the motor to make it easier haha
Ill have some more pics soon
Also awaiting my motor mounts so I can start my hotside!
Jay
04-23-2010, 10:55 AM
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More new parts....
Found a great deal on a set of callies rods that will be shipping next week, and on my oil pan and f-body accessories
also started on the wiring, but now that i am going to be putting the PCM on the drivers side I have alot of wires to snip shorter. No biggy Ill prob get that done this weekend or so.
Jay
New door pins! (these are like gold for third gens)
Found a great deal on a set of callies rods that will be shipping next week, and on my oil pan and f-body accessories
also started on the wiring, but now that i am going to be putting the PCM on the drivers side I have alot of wires to snip shorter. No biggy Ill prob get that done this weekend or so.
Jay
New door pins! (these are like gold for third gens)
04-23-2010, 03:32 PM
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This is how it was lookign before I found the crank cracked...
I think the current turbo will run outta steam around the 750ish mark my guess, i will be upgrading to a S480 next.
This time im looking for around the 7-800rwhp mark.
700ish street form would be nice, then crank it to 20psi and give her some 116octane for the track
Jay
I think the current turbo will run outta steam around the 750ish mark my guess, i will be upgrading to a S480 next.
This time im looking for around the 7-800rwhp mark.
700ish street form would be nice, then crank it to 20psi and give her some 116octane for the track
Jay
04-23-2010, 04:07 PM
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what does everyone recommend for header gaskets, i just got those bc thats all summit had in stock. I liked te earls carbon insert ones on my LT1. New to LS so dont know which to get haha
Jay
Jay