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The LSX Swap Build Thread

Old 03-15-2019, 06:31 PM
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The LSX Swap Build Thread




Have a 1985 Iroc-Z that I am the original owner. Drove for several years and then collected dust in my garage. Have decided to do a complete tear down and rebuild with a modern drivetrain. Plan is 440CI LSX, 4L60e trans, Moser built 12-bolt, all UMI tubular suspension, sway bars, poly bushings, etc. Complete rewire of car and switching to Holley Dominator EMS. 6-point cage, full paint and body work, and custom leather interior. Wilwood brakes all around along with rebuild of all systems in car not mentioned. Some pics of teardown. I will post more as progress continues.
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Old 03-15-2019, 06:36 PM
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Re: The LSX Swap Build Thread



Engine Setup similar to what I’ll be using except will have a Air Force intake. Built by Late Model Engines in Houston.
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Old 03-15-2019, 06:41 PM
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Re: The LSX Swap Build Thread

Moser 12-Bolt. Wavetrac, 3.55 gear, big axles 35 spline.
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Old 03-15-2019, 07:02 PM
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Re: The LSX Swap Build Thread

Looks awesome. What heads will you be running? Will this be an N/A motor?
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Old 03-15-2019, 07:37 PM
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Re: The LSX Swap Build Thread

Brodix heads with all the bells and whistles. Engine will be N/A. 700FWHP. Mid level power.
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Old 03-15-2019, 07:40 PM
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Re: The LSX Swap Build Thread

Originally Posted by BADMAN View Post
Brodix heads with all the bells and whistles. Engine will be N/A. 700FWHP. Mid level power.
Nothing mid level about that. That power curve will be fat.
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Old 03-15-2019, 11:05 PM
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Re: The LSX Swap Build Thread

That's badass
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Old 03-16-2019, 07:13 PM
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Re: The LSX Swap Build Thread



​​​​​​Sold the car to a neighbor about 11 years ago and he spent a little money on it. Tune, new carpet, stereo. Drove about a year then got caught in an affair and wife took him to cleaners. So, bought car back from him. Point of story is he had the entire inside floorboards and rear area “insulated “ with foil backed butyl based roof seam insulation. Kind of crap you get at Lowe’s/Home Depot. Have spent the last week with a vibrating scraper and then wiping residual tar with lacquer thinner. PITA. I know some folks advocate this as poor mans Dynomat. Dont. Just don’t!
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Old 03-16-2019, 07:22 PM
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Re: The LSX Swap Build Thread




More inside pics.
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Old 03-24-2019, 04:09 AM
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Re: The LSX Swap Build Thread

I look forward to watching this build progress!

Neil
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Old 03-24-2019, 09:37 PM
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Re: The LSX Swap Build Thread

Update: Still cleaning floor pan and rear inside area. Hope to go to fab shop next week for roll cage.
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Old 03-28-2019, 09:14 PM
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Re: The LSX Swap Build Thread

Engine on the dyno in about 2 weeks. Will post video and pics. Still cleaning interior of car. WD-40 and scraper. PITA.
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Old 03-28-2019, 09:26 PM
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Re: The LSX Swap Build Thread

Originally Posted by BADMAN View Post


Engine Setup similar to what I’ll be using except will have a Air Force intake. Built by Late Model Engines in Houston.
This is gonna be a MONSTER
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Old 03-29-2019, 08:55 AM
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Re: The LSX Swap Build Thread

LME 440 LSX Longblock Package - STREET KILLER -

700+HP Monster - Pump Gas Compatible 12.0:1

Compressio Ratio - HYDRAULIC ROLLER

Balance & Bluepri... Balance, Blueprint & Assemble Shortblock: fully deburr

block, line hone block w/ ARP main studs, deck block to

desired deck height w/ BHJ deck true fixture, bore block

on 4 axis CNC, Diamond hone block w/ torque plates,

balance crankshaft to 1/4 oz. in. tolerance, hang pistons

on rods, check all bearing clearances, file fit rings,

assemble shortblock. **All Tolerances & clearances

Optomized For Customers Specific Application



GM LSX std. deck. GM Bow Tie LSX race block. Features: priority main

oiling, billet main caps, increased cylinder wall & deck

thickness, 6 bolts per cylinder(for added improved head

gasket sealing. Block comes w/cam plate, rear cover, all

plugs & dowel pins



Compstar 4.125 St... Callies Compstar 4340 forged 4.125" stroke crankshaft w/

2.100" rod journals



Compstar LS L/J. Callies Compstar 4340 6.125" H beam connecting rods

w/ 2.1.." journal and ARP 2000 7/16" bolts



Diamond LS Shelf Diamond forged pistons w/ tool steel wrist pins & anti

friction coating on skirts: Includes stainless chrome top

ring (for high heat applications, napier 2nd (improved oil

control), 3mm oil rings(reduced friction & improved oil

control)

Clevite MS 2199 H mains, Clevite CB 663 H rods, Dura

Bond CH-23 cam bearings



LSX main studs ARP Pro Series 12pt. main stud kit

Assemble Longblo... Assemble Complete Longblock & DYNO TEST

ENGINE: degree cam, check piston to valve clearance,

adjust valve train geometry & lifter pre load, install oil

pump & heads, Modify & Install Covers



Brodix BR7 CNC Brodix LS7 LME CNC Heads: Competition Valve Job,

Flow Testing, Chambers Milled To Desired CC, Titanium

2.200" Intake Valves, Stainless Exhaust valves, LME

Dual Valve Springs (good to .660" lift), Titanium

retainers, machined locators & locks, Viton Valve Seals,

Bronze Guides (chamber volumes measures & adjusted

for compression, CNC work hand blended into valve job,

spring pressures measured & adjusted for camshaft)


LSX 6 bolt studs ARP 2000 Pro Series 12 pt. head studs for LSX 6 bolt

block (offers 40% more clamping force than the standard

ARP 8740 chromoly material)


Cometic MLX R 4... Cometic MLX 6 Bolt Head Gaskets with 1/2" Bolt Holes

For Extreem Boost Applications 4.200" x .51" x 6 bolt x

1/2"



Cam Motion LSx ... Cam Motion 8620 Billet Core Custom LSx Hyd. Roller

Camshaft



LS7. GM LS7 hydraulic roller lifters

Manley 3/8" x .135" Manley One Piece 3/8" x .135" Heavy Wall Pushrods

GM LS7 intake rocker arms

LS7 exh. GM LS7 exh. rocker arms

Comp Cams Comp Cams LS Intake & Exhaust rocker modification

(installed)



Roll Master Dbl. 4... Roll Master Double Roller Timing Set w/Torrington

Bearing & Nitrided Gears



Melling 10295 HP. Melling 10295 high pressure, coated oil pump/ ported

LS2 cover. GM LS2 front cover w/ cam sensor, gasket, seal, and

bolts



GM LS2 GM LS2 valley cover w/ gasket and bolts

LME Billet LS w/... LME Billet Aluminum Valve Covers: Includes two -10

AN Fittings, Two -10 AN Plugs, Factory Gaskets,

Stainless Mounting Hardware.



Powder Coating Powder Coating

GM F body. GM F body aluminu oil pan w/ gasket & bolts

GM F body. GM F Body pick up tube

GM F body. GM F Body windage tray

ATI F-body ATI SFI F-body balancer w/ A/C pulley

ARP LS1. ARP LS1 balancer bolt

MSD LS7 MSD Air Force LS7 Intake Manifold (makes 24HP over

FAST)



NW 102mm Cable Nick Williams Billet 102mm Cable Throttlebody

FAST 65# LS3/LS7 FAST 65# Fuel Injector LS3/LS7

GM Non resistor ... GM Non Resistor Spark Plug Wires

NGK TR6 NGK V Power TR6 spark plugs

GM LS coils GM LS coil pack
ENGINE SPECS FOR THOSE WHO KEEP MESSAGING ME ABOUT THEM.
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Old 04-01-2019, 12:14 PM
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Re: The LSX Swap Build Thread






Engine bay stripped. All wiring out of car. Removed rear impact and side lower body parts. Now on to doors to remove glass, motors, etc. After that roller to fab shop for small floorboard repair(dented) and 6- point safety cage.
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Old 04-01-2019, 12:20 PM
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Re: The LSX Swap Build Thread

Originally Posted by ShiftyCapone View Post
Nothing mid level about that. That power curve will be fat.
I live near the Houston area. Believe me, around here 700+HP is mid-level. 😜
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Old 04-21-2019, 05:00 PM
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Re: The LSX Swap Build Thread

Body at fab shop for roll bar and frame and floorboard work. Then to paint shop.
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Old 04-24-2019, 09:51 PM
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Re: The LSX Swap Build Thread

Wow! Can't wait to see more.
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Old 05-01-2019, 12:13 PM
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Re: The LSX Swap Build Thread



Custom cage by Jeff and Greg at Lucas Automotive.

Last edited by BADMAN; 05-01-2019 at 12:31 PM.
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Old 05-01-2019, 12:35 PM
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Re: The LSX Swap Build Thread


Driver’s side view. Lower door bars tied into sub-frame connectors.
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Old 05-01-2019, 08:26 PM
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Re: The LSX Swap Build Thread

You're not going to pass tech at the drag strip. Does that matter or not?
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Old 05-01-2019, 08:39 PM
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Re: The LSX Swap Build Thread

Originally Posted by QwkTrip View Post
You're not going to pass tech at the drag strip. Does that matter or not?
No. Built mainly for structural strength and some safety makes me feel better. I see cars at the track with no cages and no safety gear and they let them roll down the strip. My car is mostly for the street. If I do go to the track and they won’t let me run, won’t bother me. I didn’t want a Interior I had to crawl in.
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Old 05-01-2019, 08:58 PM
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Re: The LSX Swap Build Thread

Originally Posted by BADMAN View Post
No. Built mainly for structural strength and some safety makes me feel better.
Yep, I totally get it. Track legal bars kill on the street anyway. Too close to the brain bucket.
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Old 05-10-2019, 11:05 PM
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Re: The LSX Swap Build Thread

Great start on the build. Your doing it right with all best parts. This car is going to be badass all around car. street, drag, or road race. Cant wait to see more...
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Old 05-16-2019, 07:37 AM
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Re: The LSX Swap Build Thread

Dyno run completed. 714FWHP, 636Torque. Can someone tell me how to download video?
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Old 05-16-2019, 10:07 AM
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Re: The LSX Swap Build Thread

Originally Posted by BADMAN View Post
Dyno run completed. 714FWHP, 636Torque. Can someone tell me how to download video?
Upload it to YouTube, then paste the link in the thread
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Old 05-16-2019, 11:42 AM
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Re: The LSX Swap Build Thread

. Pickup tomorrow. More pics to follow.

Last edited by BADMAN; 05-16-2019 at 02:59 PM.
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Old 05-17-2019, 07:27 PM
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Re: The LSX Swap Build Thread



LS7 440CI.
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