LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

Lots of LSx part numbers and specs

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Old 01-08-2010, 12:18 PM
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Car: 91 Z28, 2000 T/A
Engine: SBC 355, LS1
Transmission: T56, T56
Axle/Gears: 10bolt 3.73, 3.42
Lots of LSx part numbers and specs

Found this looking for some cam info, figured I'd post it up here maybe it would help someone out.


Gaskets & Bolts:
88862586 – GM EOS Assembly Lubricant (breakin oil) List: 23.53 Cost: 17.66
12557840 LS1 Harmonic Balancer Bolt List: 5.42 Cost: 4.07
12610311 new part # - 12588372 Water pump gasket (each) List: 5.98/ea, Cost: 4.49
12610046 GM MLS 5-layer 6.0/6.2 Head Gaskets List $39.88 ea, Cost $29.91 each
12589226 (5.7 MLS) and 12589227(6.0L MLS) Head Gaskets
12498544 MLS 5.7L Z06 Head gaskets (price per pair) – List $54 Cost $33.75
12575329 stock 5.3l head gasket ($27.59)
12498545 LS1 head bolt kit[ one head] part number $16.95/set.
17800568 04+ head bolts (one length)
12558760 LS1 oil pan gasket
12585673 front main seal
12558178 Valley cover gasket
12558573 Header

gasket
12560696 Valve cover gaskets
89060436 rear main seal
12568069 GM LS1 factory rod bolt
19170420 4.250” Bore GMPP LSX 6-bolt Head Gaskets (Pair) $113
LS6 PCV plug 12568011
16mm x 1.5mm oring style is oil pressure fitting size (top rear of block)
12mm x 1.5mm oring style is water temp (side of the head fitting)

Cam/Valvetrain/Timing Set etc
12499225 Set of LS7 lifters (16)
17122490 LS7 individual lifter (each)
12600325 LS2 Timing Cover - grey cam sensor (for use on ls1 swapped cars)
12586481 LS7 upper sprocket 4x (NBS 3-bolt truck cam swaps) List 24.19 Cost: 18.14
12600326 LS3 Timing Cover brown cam sensor (for use on 58x reluctors)
12499224 LS2 Yellow Valvesprings ($65 cost)
12605527 LS9 ZR1 Camshaft 562"/.558" and 211*/230* @ 0.050" - $115.49
12576407 Upper sprocket 2x for LS2 into LS1 car (LS2 sprocket)
12586482 LS2 timing chain
12588670 Timing Chain damper for LS2
12574294 LS1 front timing cover
12574293 Ls1 rear timing engine cover

Flexplate/Clutch/Transmission Related:
12621399 – New part # for 6.0L flexplate,spacer/bolts for longer crankshaft ($57.30)
24248985 – LS7 Clutch
12571611 – LS7 Flywheel
89059282 - LS6 C5 Slave Cylinder – 127.79
12564455 - LS6 C5Master Cylinder – 130.33
14061685 – LS1 Pilot Bearing – 12.41
12563533 longer bolts for crank spacer (th350/400 onto ls1 engine) 12563533
12557583 Extended pilot bearing for Muncie, tremec into LS1

Intake Manifold/Cooling System/Accessories:
12602544 Ls6 style front crossover coolant pipe
12602540 Coolant plug
12590124 L76 intake manifold
12559885 power steering replacement pulley Fbody
GM F-body Power steering reservoir: 26068934 fbody List: 74.83 Cost: 52.50

LS2/LS7 Engine Parts:
LS2 cam sensor 12585545
LS2 bare block = 12568950
LS2 crate motor = 19156261 (formerly 12499750)
LS2 longblock assembly = 89017654
LS2 camshaft = 12574519
LS2 timing chain = 12586482
LS2 front cover = 12600325
LS2 rear cover (same as LS1/LS6) = 12572014
LS2 90mm throttle body with actuator (same as LS7) = 12570790
LS2 throttle body attachment fastener x4 = 11519971
LS2 throttle body attachment seal = 12576549
LS2 MAP sensor = 16212460
LS2 intake manifold = 89017648 or 12589181
LS2 intake to cylinder head gasket x8 = 12580833
LS2 intake manifold attachment bolt x10 = 12552344
LS2 intake manifold sight shield, LH = 12568998
LS2 intake manifold sight shield, RH = 12569246
LS2/LS7 valley cover = 12570471
LS2 fuel injector assembly x8 = 12569113
LS2 fuel injector o-rings (orange) = 89017587
LS2 fuel injector retainer clip x8 = 24503227
LS2 fuel rail = 12572174
LS2 fuel rail attachment bolt x4 = 12590276
LS2 front coolant tube = 12578838
LS2 rear coolant plugs x2 = 12563325
LS2 polished rear wheel = 9594349
LS2 valve springs (same as LS6) = 12586484
LS2 valve pushrod cover guide (lifter tray) = 12595365
LS2 cylinder heads (same as LS6) = 12564825
LS2 cylinder intake valve (same as LS1) = 12563063
LS2 water pump = 89017457
SSR/Trailblazer 5.3L/LS2 oil pan (has front sump with hole for 4wd front axle) = 12579723
GTO LS1/LS2 oil pan (has front sump) = 12581209
LS2/LS7 spark plug wires = 89018058
LS2 flywheel = 12571611
LS7 Throttle body 12570790

4l60e Transmission Cooler Parts Kit (Summit Racing part #'s)
Tranny Cooler Kit: SUM-230620 (20 ft hose - $67), BMM-70266 (Cooler - $76), SUM-220687B (90 deg 6an – 2 qty - $24), SUM-220649B (1/2 npt to 6an – 2 qty - $6), SUM-220655B (1/4” NPT 45 degree to 6an – 2qty - $12), sum-220690B (6an hose end – 2 qty - $8 )

PCM Part #'s
99-00 Service # 09354896
2001 Service # 52369718
2002 Service #12200411


Engine Block Part #:
Lq9 Block,eng (cstg) 12551364
Lq4 Block,eng (cstg) 12551364
L76 Block,eng (cstg) 12568952
Ls2 Block,eng (cstg) 12568952
L76 Block,eng (cstg) 12577461
L92 Block,eng (cstg) 12584724
Ls3 Block,eng (cstg) 12584724
LS6 engine block casting number 12561168
LS1 engine block casting number 12559378
LSX block------225 lbs.
GM 6.0L block--171-178 lbs.
GM LS2 block--103-110 lbs.

Aftermarket Parts for LS1 applications:
TAC module GM#12574221 for 90mm on DBW truck setups

3/8” fuel rail quick disconnect Russell 640850, 5/16” 640860
512K6 - shortbelt for the ASP pulley, stock alternator pulley
ARP- 234-4319 LSx block head stud kit
255lph hi-vol forced induction pump HLY-12-914
MEL-10295 Hi-Pressure Standard Volume Oil Pump
MEL-10296 Hi Pres/ Hi Vol
AER-FBM2608 (16mmx1.5 O-ring to 6an p/s pressure fitting LS1)
160 deg thermostat Mr Gasket – 6367 180 degree – 6368 LS2/LS3
LS1 Male EFI Fuel line fitting 3/8” (same as on factory fuel rail) dorman 800-155

Oxygen Sensor Location:
bank 1 sensor 1 = driver front (pre-cat)
bank 1 sensor 2 = driver rear (post-cat)
bank 2 sensor 1 = pass. front (pre-cat)
bank 2 sensor 2 = pass rear (post-cat)

OBD-2 Wiring for your diagnostic connector:


Head bolt torque sequence:
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Block part #'s:
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Common LS1 Valvespring specs:
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Part #'s and information for head gaskets for different applications:
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Engine block info:

Fbody Oil Pan Dimensions:
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Truck Pan:
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Oil Pump:
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Old 01-09-2010, 09:31 AM
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Car: 1989 IROC-Z, 1979 Malibu Classic
Engine: LSx 5.3
Transmission: MN12 6-speed, 4L60E
Axle/Gears: 4th gen 3.42
Re: Lots of LSx part numbers and specs

Cool, I have also found this site to be quite resourceful in finding part numbers and pictures.

http://www.compnine.com/
Old 03-26-2010, 10:52 PM
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Car: 84 Z28......99 TA
Engine: Lq9 6.0... Ls1
Transmission: 4L60E X's 2
Axle/Gears: 3.73 on both
Re: Lots of LSx part numbers and specs

12605527 LS9 ZR1 Camshaft 562"/.558" and 211*/230* @ 0.050" - $115.49

wow just checked this out hope its not a typo with gm lol

http://www.gmpartsdirect.com/results.cfm
Old 03-27-2010, 09:54 PM
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Car: 92 Firebird
Engine: Supercharged 6.0
Transmission: T56
Axle/Gears: 8.8 3.73
Re: Lots of LSx part numbers and specs

Seems legit, several guys on tech are using it

Too bad its GEN IV so GEN III guys like me would need the LS2 timing cover/sprockets and some rewiring
Old 03-27-2010, 10:06 PM
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Re: Lots of LSx part numbers and specs

Don't even think it unless you already have either a supercharger, or a big single turbo, or a pair of medium turbos. the lobe sep. is WAY TOO wide for good power without boost.
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