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.

LS swappers dyno results list

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Old 07-11-2020, 04:51 PM
  #51  
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Car: 89 iroc 98 T/A
Engine: LSX
Transmission: T56
Re: LS swappers dyno results list


517hp/511Tq. 6.0 (408) tea cnc 243’s ,fast 92, Btr stg 3 stroker cam, monster lt1-s twin disc, stg 2 t56 rebuild, strange chromoly driveshaft, stock 10 bolt.
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Old 01-09-2021, 08:32 PM
  #52  
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Car: 1986 Camaro Z28
Engine: 6.0L LS
Transmission: T-56
Axle/Gears: 3.73
Re: LS swappers dyno results list

Afternoon All,
I was able to get the car on the dyno last night down in Victoria, TX. Mods to the car:

Junkyard LQ4 pullout - stock crank and rods
Aftermarket flat-top pistons
Junkyard 799 heads, ported by Katech, milled ~.020", valve job, BTR springs, trunion upgrade
Pat G Cam 231/238 .629"/.615" 112 +2
Stock LS6 intake and TB
Speed Engineering 1-7/8" headers
Walbro 255, 42# injectors

LS1 style T56, Monster LT-1 clutch, 3.73 gear rear
Hooker LS swap true dual exhaust

As for the numbers on a mustang dyno, best run:
Weather Corrected HP/TQ - 499/413
Actual Measured HP/TQ - 462/415

Old 01-09-2021, 09:42 PM
  #53  
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: LS swappers dyno results list

Cool, thanks. Got you added to the list.
I put you down for 449 RWHP because that's what the sheet says.
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Old 05-08-2021, 10:12 PM
  #54  
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Car: 1982 Z28
Engine: LC9
Transmission: AR5
Axle/Gears: 3.23
Re: LS swappers dyno results list

1982 Camaro Z28

5.3 aluminum block 58x (I think 2007-2009) machined and tweaked by a local shop ... nothing stock
Ported 243 heads
Custom cam
LS6 intake with ported LS1 throttle body
Pretty sure the original T10 (dyno pulls in 4th gear)
3.73 gears
Ram clutch and flywheel
Speed Engineering longtubes and single muffler
MS3 Pro drop-in harness and ECU tuned by Peter Florance (PFTuning.com) at Abacus Racing (Dynojet) in Virginia Beach

368/362 (last run, adding some timing up top after a long cool down) -- corrected 360/353

For fun, here is a comparison of the old L98 on the same dyno:



Last edited by slow305; 05-09-2021 at 07:22 AM. Reason: Added corrected numbers and dyno comparison
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Old 06-06-2021, 01:20 AM
  #55  
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: LS swappers dyno results list

@punkmaster98
1984 Trans Am

from 2021:
https://www.thirdgen.org/forums/ltx-...on-recaro.html

LQ4 6.0L
243 heads CNC ported
Martin Smallwood cam 226 / 228 114.5
Dorman LS2 intake
Fast 92 throttle body
T56 and 4.10 gears

450 RWHP / 427 lb-ft


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Old 06-15-2021, 09:38 AM
  #56  
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Car: 91 Firebird
Engine: LY6
Transmission: TR6060
Axle/Gears: 4th Gen w/3.73's
Re: LS swappers dyno results list

Finally got to the dyno! Final pull: 404 whp, 387 lb/ft

LY6 .030" over
SS2 Cam
+4cc dome pistons = 11.5:1 CR
LS3 intake, 92mm TB
LSA injectors
Mid length headers, to F-Body cat back
TR6060
3.73 gear ratio



Last edited by slowbluw91; 06-15-2021 at 11:40 AM. Reason: cam
Old 06-15-2021, 10:01 AM
  #57  
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Car: 1991 Camaro RS
Engine: L03 305 V-8 (for now ;) )
Transmission: T-5 5 speed
Axle/Gears: stock... whatever that means :)
Re: LS swappers dyno results list

Originally Posted by slowbluw91
Finally got to the dyno! Final pull: 404 whp, 387 lb/ft

LY6 .030" over
+4cc dome pistons = 11.5:1 CR
LS3 intake, 92mm TB
LSA injectors
Mid length headers, to F-Body cat back
TR6060
3.73 gear ratio

https://youtu.be/MRuaIBcRDdo

​​​​​​
What cam?
Old 06-15-2021, 11:41 AM
  #58  
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Car: 91 Firebird
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Transmission: TR6060
Axle/Gears: 4th Gen w/3.73's
Re: LS swappers dyno results list

Originally Posted by JAYDUBB
​​​​​​
What cam?
Sloppy Stage 2 - Sorry, updated the post!
Old 06-29-2021, 11:15 AM
  #59  
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Re: LS swappers dyno results list

Engine:
gen3 5.3l
fully rebuilt and blueprinted
gm performance main cap hardware
arp rod bolts
stock piston and rods
gapped total seal rings
clevite main and cam bearings
SS2 cam
ls9 headgaskets
ls7 lifters
texas speed push rods
arp head studs
billet oil barbell
ported and shimmed oil pump
double roller timing chain
f-body oil pan setup
sheet metal intake
80lb deka injectors
525lph fuel pump
-8an feed
-6an return
deatchwerks fuel pressure regulator
ngk br7ef plugs
taylor plug wires
rebuilt 862 heads
pac 1218 valve springs
ebay radiator (made to dual pass)

Trans:
rebuilt lt1 t56
rockland gear LS conversion
gto bellhousing
hurst shifter
monster stage 3
lightened flywheel
tick master
gm slave with speed bleeder

turbo stuff:
vs racing 78/75 cast turbo
-4an feed
-10an drain
3 bar map sensor
ebay 31x12x3 intercooler
ebay bov
tial wastegate
turbo guard filter

went in untuned just with the holley self learned stuff and it made 444/430. after a little bit of tuning and cali's 91 octane it made 521/486 the with about half a tank of e85 it made 610/539 to the wheels.



Last edited by Swapper; 07-05-2021 at 01:23 PM.
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Old 11-29-2022, 09:10 PM
  #60  
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Car: 1991 Camaro Z28 Clone
Engine: 350 w/TBI
Transmission: WC T-5
Axle/Gears: Spicer 3:73 Auburn Posi
Re: LS swappers dyno results list

Engine:
1999 5.7 FBody LS1 (45k on block)

Stock Pistons, Rods, and Crank
TSP 228/232 .600 112 LSA cam
Wegner 243 ported heads (300cfm @ .600 lift)
Manley .660” Dual polished Springs
Manley Titanium Retainers
Manley Hardened Spring Seats
Manley Valve Stem Seals
GM Rockers w/ Brass Trunnion upgrade
ARP head studs
GM MLS Headgaskets

LS7 Lifters
LS2 Lifter Trays
Texas Speed push rods
Melling M295 Oil Pump
FAST 92mm Intake
FAST 92mm Throttle Body

FAST 36lb. injectors
Aeromotive 340LPH fuel pump
Aeromotive fuel pressure regulator
SLP 25% Under drive pulley
NGK TR5IX plugs

10mm Taylor plug wires
200 amp alternator
1 7/8” Speed Engineering headers
3” y pipe to 4” Mufflex catback exhaust

Billet oil barbell
LS2 Timing chain w/ damper and bracket

Trans:
Rebuilt LS1 T56
GM heavy duty Bellhousing
Hurst ST shifter
Spec stage 1 clutch and PP
Jeg’s Nodular Iron flywheel
Tick Master
GM slave with speed bleeder

Rear Gear = 3.73
3.5” custom aluminum driveshaft

413 RWHP and 384 TQ

Dynojet Dyno
4th gear 1.0 pulls

Knock sensors failed pulling timing - tuner said I could get another 10HP out of fixing that.

Gained about 90HP and 70TQ from baseline by tuning and other adjustments. Pretty happy with end result.




Last edited by kaotik; 11-29-2022 at 09:42 PM. Reason: Update
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