David@Vengeance

iTrader: (2)

This beautiful 2002 Camaro SS came in for a full top-end refresh. This Camaro arrived with a relatively subtle 383ci LS1 still utilizing stock 241 cylinder heads, an LS6 intake, and very mild camshaft that was already in the car when the customer purchased it. After the customer had installed his own aftermarket clutch kit and Midwest Chassis, Inc 9" rear-end, the car laid down 382rwhp and 380rwtq on our dyno on 93 octane. The car was also fitted with full suspension and a set of American Racing wheels wrapped in Nitto drag radials in preperation for the upcoming power bump here at Vengeance.






The customer's goal was to build something both powerful and unique, while still retaining reliability at the track and on the street. For this, we created a combination using the following parts that would compliment his current stroker shortblock as well as give performance with a well balanced powerband that he was seeking. For this particular setup, we came up with the following:


• Mast Motorsports 240cc small-bore LS3 cylinder heads
• FAST - 102mm LSXR LS3 intake manifold
• AirMotive Fuel Rails
• Nick Williams 102mm throttle body
• Fast Toys 98mm Air Lid
• GM LS7 lifters
• Vengeance Racing Kaotik camshaft
• Melling 10296 oil pump
• C5R timing chain
• Vengeance Racing 42lb fuel injectors
• Racetronix F99 fuel pump kit





After less than one week in the shop to complete this work, we headed to the dyno to wrap up ECU tuning. The final output was an extremely impressive 492rwhp and 460rwtq on 93 octane fuel and through a 9" rear end!! This was a gain of 110rwhp and 79rwtq with just a few simple modifications! The customer is loving the new sound, driveability, and performance of the combination and can't wait to head to the local track to see what this combination can really do.


If you are interested in a similar combination for your LS based vehicle, or would like any more information on our LS/LT performance offerings, feel free to contact us at sales@vengeanceracing.net or 678-513-7105 today! You can find all the products used in this build on our Online store @ https://vengeanceracing.net/online-store
I will include links to some of the featured products.

MAST 24-cc LS3 Cylinder Heads:
https://vengeanceracing.net/1998-200...-960-bore.html
Vengeance Racing KAOTIK Camshaft:
https://vengeanceracing.net/vengeanc...624-113-2.html
Nick Williams 102mm Throttle body:
https://vengeanceracing.net/nick-wil...ttle-body.html

G Atsma

IMPRESSED! That dude gonna HAUL!

Darth_V8r

iTrader: (4)

i don't think his power even peaked yet. Probably clears 500 just revving it past 6500

morepwr

Very solid numbers!

G Atsma

Just looked again; you are right, that line is still on the up-slope! Just depends on how high he wants to wind 'er up! Hope he has GOOD valve springs.... though I think it will be done juuust past 6500...

big hammer

With that much torque that setup is capable of 540+ rwhp with mid runners and he right cam. Very cool setup

Darth_V8r

iTrader: (4)

I just noticed torque peak is at 5300 rpm. That should put peak power around...6700?

Either way, for the love of Mike, rev that bitch, find the peak, and see how it carries past peak!

big hammer

And another thing.... those damn ls3 ports and their poor low end torque...

dr_whigham

iTrader: (49)

MAST Small-bore LS3's getting it done!

98_WS6_M6

iTrader: (18)

Nice results! I wouldn't mind trying a setup like that on my 383 eventually. I've been told before it's probably one of the best setups for a 383 stroker. I'd probably run an LLSR cam and lifters though and rev to the moon lol

Darth_V8r

iTrader: (4)

I want to see how your mamo 220's do first!

98_WS6_M6

iTrader: (18)

100% agreed. It's that car building ADHD lol.

I'm hoping to get close to your SBE heads cam car with my current street build.

redtan

iTrader: (5)

The lack of low end torque people complain about is usually at part throttle driving around town where big *** ports with big *** valves on small bores (4" for example) can feel lazy. I don't think anyone complained that square ports don't make torque down low at WOT.

Second, those MAST LS3 small port small bore heads are not even on the same planet as a stock port stock valve LS3 head. Slap on a stock LS3 head on that bitch and you ain't getting anywhere near the torque seen in this dyno graph.

But keep spewing your agenda

Darth_V8r

iTrader: (4)

It's a complete joke. There's a few guys that are all cathedral ports all the way no matter what. Hammer was making fun of them. Hammer has these same heads on his 388.

But it's beena running joke for a few months now -- "Do you have enough torque to idle?" "How can you even cruise down the highway?" Stuff like that

big hammer

It will make zero torque with stock ls3 heads in this motor you're right... cause the valve will smash the cylinder and it won't even run. Major torque reduction

A.R. Shale Targa

iTrader: (2)

But if a bent valve remains open all the time WELL then that's like a 360 degree duration intake lobe....bitch Finna' breathe all the damn time....
Sorry to the OP for the comical derailment

NAVYBLUE210

Minor Correction,
Hammer has the Mast "MEDIUM Bore" LS3 Heads 255 CC & 2.165" Valve
VS The OPS small Bore LS3 Heads 240 CCs & 2.080" Valve.

99 Black Bird T/A

iTrader: (4)

Excellent topic, interesting write up & video.
Thank you VR for sharing.

wannafbody

iTrader: (2)

Are these stock LS3 castings or aftermarket? Is it the 11 degree angle that allows them to work on the 3.9 inch bore?

NAVYBLUE210

MAST LS3 Small Bore with 2.08" Intake valve VS 2.165" standard size Intake.
All the info is in the thread. Valve angle helps with PTV, some one more
Experienced than I would know if Valve angle helps the clearance with
Smaller Bores.