Results: LS3 427 stroker=639HP 610 lb-ft TQ
#1
Burning Brakes
Thread Starter
Engine Dyno Results: LS3 427 stroker=639HP 610 lb-ft TQ
My freshly built LS3 based 427 stroker made 639hp and 610tq and 560 lb ft @ 3600 RPM on a Superflow engine dyno!
Not too bad for a small cam!
The engine build consists of stock LS3 intake, stock LS2 TB, comp 239/247 cam, Mast Motorsports Black Label large bore heads and a forged rotating assembly at around 11.2 compression ratio.
Hopefully it won't lose too much through the drive train with a 6L80e...
Not too bad for a small cam!
The engine build consists of stock LS3 intake, stock LS2 TB, comp 239/247 cam, Mast Motorsports Black Label large bore heads and a forged rotating assembly at around 11.2 compression ratio.
Hopefully it won't lose too much through the drive train with a 6L80e...
Last edited by firefighter813x; 04-23-2012 at 03:14 PM.
#3
Burning Brakes
Thread Starter
LOL hey... the car is still going to rip! Technically the engine dyno numbers are a tad more than a ZR1 for a lot cheaper without a supercharger! It can be my wannabe ZR1.
639hp at the wheels would be nasty!
639hp at the wheels would be nasty!
#7
Le Mans Master
Where did you go to Dyno on a Superflow engine dyno?
Only shop I know in so CA is Westech (and they have two along with a chasis dyno).
#8
Melting Slicks
When you get it together it would be great to get a whp figure then guys could have some better info available in converting whp and crank hp figures for auto cars near your power range. Should be a monster on the street
#10
Sweet numbers......I'm assuming SAE correction factor were used ?
Your package is making bigger numbers than the Katech Street Attack engine they just performed an engine dyno test on....and it had a FAST 102 on it.
http://forums.corvetteforum.com/c6-z...580ft-lbs.html
Last edited by FNBADAZ06; 04-23-2012 at 04:15 PM.
#12
Burning Brakes
Thread Starter
#13
Burning Brakes
Thread Starter
#14
Burning Brakes
Thread Starter
I'd much prefer an engine dyno sheet than a chassis dyno sheet any day of the week
Sweet numbers......I'm assuming SAE correction factor were used ?
Your package is making bigger numbers than the Katech Street Attack engine they just performed an engine dyno test on....and it had a FAST 102 on it.
http://forums.corvetteforum.com/c6-z...580ft-lbs.html
Sweet numbers......I'm assuming SAE correction factor were used ?
Your package is making bigger numbers than the Katech Street Attack engine they just performed an engine dyno test on....and it had a FAST 102 on it.
http://forums.corvetteforum.com/c6-z...580ft-lbs.html
#15
Burning Brakes
Thread Starter
Found the specs via Katech's website-
Bore: 4.125”
Stroke: 4.000”
Displacement: 427ci/7.0L
Horsepower: 630
Torque: 565
Redline: 7000RPM
CR: 11.4:1
Block: LS7 aluminum, billet main caps
Crankshaft: 4140 forged steel
Connecting rods: Powdered metal titanium, rebushed with bronze bushing
Pistons: 4032 forged aluminum
Camshaft: Torquer LS7 110 or 116LA, high speed lifters, C5-R chain
Cylinder heads: CNC-ported LS7
Valves: Titanium intake, hollow sodium filled exhaust
Induction: FAST LSXR 102mm
Oiling system: LS7 dry sump
This makes my Ls3 seem more impressive after seeing the engine specs. Makes you wonder....
Bore: 4.125”
Stroke: 4.000”
Displacement: 427ci/7.0L
Horsepower: 630
Torque: 565
Redline: 7000RPM
CR: 11.4:1
Block: LS7 aluminum, billet main caps
Crankshaft: 4140 forged steel
Connecting rods: Powdered metal titanium, rebushed with bronze bushing
Pistons: 4032 forged aluminum
Camshaft: Torquer LS7 110 or 116LA, high speed lifters, C5-R chain
Cylinder heads: CNC-ported LS7
Valves: Titanium intake, hollow sodium filled exhaust
Induction: FAST LSXR 102mm
Oiling system: LS7 dry sump
This makes my Ls3 seem more impressive after seeing the engine specs. Makes you wonder....
#17
Le Mans Master
Hope you report back. Would love to know the power loss thru that tranny\stall just for knowledge sake.
Nice motor
#19
Burning Brakes
Thread Starter
It's going to be a long time until it's back together due to an unfortunate event.... I have to save some $ for other parts to put it back together. I plan to rebuild the whole car and I'm in no hurry.